journal article·2016-03Open access

Computational studies of solid-state alkali conduction in rechargeable alkali-ion batteries

Zhi Deng, Yifei Mo, Shyue Ping Ong

NPG Asia Materials· Volume 8· Issue 3

Abstract

The facile conduction of alkali ions in a crystal host is of crucial importance in rechargeable alkali-ion batteries, the dominant form of energy storage today. In this review, we provide a comprehensive survey of computational approaches to study solid-state alkali diffusion. We demonstrate how these methods have provided useful insights into the design of materials that form the main components of a rechargeable alkali-ion battery, namely the electrodes, superionic conductor solid electrolytes and interfaces. We will also provide a perspective on future challenges and directions. The scope of this review includes the monovalent lithium- and sodium-ion chemistries that are currently of the most commercial interest. Scientists have assessed the vital contributions computational approaches have made to the study of alkali ion flow in alkali-ion batteries. Ubiquitous lithium-ion batteries are currently the dominant means of powering consumer electronic devices, while sodium-ion batteries are enjoying a resurgence. Alkali ion transport in the components (electrodes, electrolyte and their interface) of such batteries strongly affects their performance, but the factors affecting it are not well understood. Zhi Deng of the University of California and co-authors note that computational methods for analysing the flow of alkali ions in alkali-ion batteries provide valuable insights for enhancing battery performance. They review the computational methods available, outlining their advantages and limitations, and discuss how such methods have advanced the understanding and design of battery components. Finally, the researchers mention current challenges and possible future developments in this field. The facile conduction of alkali ions in a crystal host is of crucial importance in rechargeable alkali-ion batteries. This review provides a comprehensive survey of the various computational approaches, such as transition state, molecular dynamics and Monte Carlo methods, to study solid-state alkali diffusion, discusses how these methods have provided useful insights into the design of crystalline materials that form the main components of a rechargeable alkali-ion battery, namely the electrodes, superionic conductor solid electrolytes and their interfaces, and provides our perspective on the future challenges and directions in computational alkali diffusion studies.
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OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

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References (100+)

Show source-provided references
1. Whittingham, M. S. Electrical energy storage and intercalation chemistry. Science 192, 1126–1127 (1976).10.1126/science.192.4244.1126 ↗
2. Padhi, A., Nanjundaswamya, K. & Goodenough, J. Phospho-olivines as positive-electrode materials for rechargeable lithium batteries. J. Electrochem. Soc. 144, 1188–1194 (1997).10.1149/1.1837571 ↗
3. Mizushima, K., Jones, P. C., Wiseman, P. J. & Goodenough, J. B. LixCoO2 (0<x≤1): a new cathode material for batteries of high energy density. Mater. Res. Bull. 15, 783–789 (1980).10.1016/0025-5408(80)90012-4 ↗
4. Whittingham, M. S. Lithium batteries and cathode materials. Chem. Rev. 104, 4271–4301 (2004).10.1021/cr020731c ↗
5. Whittingham, M. S. Ultimate limits to intercalation reactions for lithium batteries. Chem. Rev. 114, 11414–11443 (2014).10.1021/cr5003003 ↗
6. Whittingham, M. S. Chemistry of intercalation compounds: metal guests in chalcogenide hosts. Prog. Solid State Chem. 12, 41–99 (1978).10.1016/0079-6786(78)90003-1 ↗
7. Nagelberg, A. S. & Worrell, W. L. A thermodynamic study of sodium-intercalated TaS2 and TiS2 . J. Solid State Chem. 29, 345–354 (1979).10.1016/0022-4596(79)90191-9 ↗
8. Delmas, C., Braconnier, J., Fouassier, C. & Hagenmuller, P. Electrochemical intercalation of sodium in NaxCoO2 bronzes. Solid State Ionics 3-4, 165–169 (1981).10.1016/0167-2738(81)90076-X ↗
9. Zhao, J., He, J., Ding, X., Zhou, J., Ma, Y., Wu, S. & Huang, R. A novel sol–gel synthesis route to NaVPO4F as cathode material for hybrid lithium ion batteries. J. Power Sources 195, 6854–6859 (2010).10.1016/j.jpowsour.2010.04.003 ↗
10. Whitacre, J. F., Tevar, A. & Sharma, S. Na4Mn9O18 as a positive electrode material for an aqueous electrolyte sodium-ion energy storage device. Electrochem. Commun. 12, 463–466 (2010).10.1016/j.elecom.2010.01.020 ↗
11. Ong, S. P., Chevrier, V. L., Hautier, G., Jain, A., Moore, C., Kim, S., Ma, X. & Ceder, G. Voltage, stability and diffusion barrier differences between sodium-ion and lithium-ion intercalation materials. Energy Environ. Sci. 4, 3680–3688 (2011).10.1039/c1ee01782a ↗
12. Yabuuchi, N., Kajiyama, M., Iwatate, J., Nishikawa, H., Hitomi, S., Okuyama, R., Usui, R., Yamada, Y. & Komaba, S. P2-type Nax[Fe1/2Mn1/2]O2 made from earth-abundant elements for rechargeable Na batteries. Nat. Mater. 11, 512–517 (2012).10.1038/nmat3309 ↗
13. McGraw, J., Bahn, C. S., Parilla, P. A., Perkins, J. D., Readey, D. W. & Ginley, D. S. Li ion diffusion measurements in V2O5 and Li(Co1−xAlxO2 thin-film battery cathodes. Electrochim. Acta 45, 187–196 (1999).10.1016/S0013-4686(99)00203-0 ↗
14. Van Der Ven, A. & Ceder, G. Lithium diffusion in layered LixCoO2 . Electrochem. Solid-State Lett. 3, 301–304 (2000).10.1149/1.1391130 ↗
15. Jang, Y. -I., Neudecker, B. J. & Dudney, N. J. Lithium diffusion in LixCoO2 (0.45<x<0.7) intercalation cathodes. Electrochem. Solid-State Lett. 4, A74–A77 (2001).10.1149/1.1368717 ↗
16. Kang, K., Morgan, D. & Ceder, G. First principles study of Li diffusion in I-Li2NiO2 structure. Phys. Rev. B 79, 014305 (2009).10.1103/PhysRevB.79.014305 ↗
17. Morgan, D., Van der Ven, A. & Ceder, G. Li conductivity in LixMPO4 (M=Mn, Fe, Co, Ni) olivine materials. Electrochem. Solid-State Lett. 7, A30–A32 (2004).10.1149/1.1633511 ↗
18. Stallworth, P. E., Fontanella, J. J., Wintersgill, M. C., Scheidler, C. D., Immel, J. J., Greenbaum, S. G. & Gozdz, A. S. NMR, DSC and high pressure electrical conductivity studies of liquid and hybrid electrolytes. J. Power Sources 81-82, 739–747 (1999).10.1016/S0378-7753(99)00144-5 ↗
19. Xu, K. Electrolytes and interphases in Li-ion batteries and beyond. Chem. Rev. 114, 11503–11618 (2014).10.1021/cr500003w ↗
20. Stramare, S., Thangadurai, V. & Weppner, W. Lithium lanthanum titanates: a review. Chem. Mater. 15, 3974–3990 (2003).10.1021/cm0300516 ↗
21. Knauth, P. Inorganic solid Li ion conductors: an overview. Solid State Ionics 180, 911–916 (2009).10.1016/j.ssi.2009.03.022 ↗
22. Kamaya, N., Homma, K., Yamakawa, Y., Hirayama, M., Kanno, R., Yonemura, M., Kamiyama, T., Kato, Y., Hama, S., Kawamoto, K. & Mitsui, A. A lithium superionic conductor. Nat. Mater. 10, 682–686 (2011).10.1038/nmat3066 ↗
23. Goodenough, J. B., Hong, H. Y. -P. & Kafalas, J. A. Fast Na+-ion transport in skeleton structures. Mater. Res. Bull. 11, 203–220 (1976).10.1016/0025-5408(76)90077-5 ↗
24. Jalem, R., Yamamoto, Y., Shiiba, H., Nakayama, M., Munakata, H., Kasuga, T. & Kanamura, K. Concerted migration mechanism in the Li ion dynamics of Garnet-type Li7La3Zr2O12 . Chem. Mater. 25, 425–430 (2011).10.1021/cm303542x ↗
25. Kanno, R., Hata, T., Kawamoto, Y. & Irie, M. Synthesis of a new lithium ionic conductor, thio-LISICON—lithium germanium sulfide system. Solid State Ionics 130, 97–104 (2000).10.1016/S0167-2738(00)00277-0 ↗
26. Wang, Y., Richards, W. D., Ong, S. P., Miara, L. J., Kim, J. C., Mo, Y. & Ceder, G. Design principles for solid-state lithium superionic conductors. Nat. Mater. 14, 1026–1031 (2015).10.1038/nmat4369 ↗
27. Hong, H. Y. -P. Crystal structures and crystal chemistry in the system Na1+xZr2SixP3−xO12 . Mater. Res. Bull. 11, 173–182 (1976).10.1016/0025-5408(76)90073-8 ↗
28. Delmas, C., Fouassier, C. & Hagenmuller, P. Structural classification and properties of the layered oxides. Phys. B+C 99, 81–85 (1980).10.1016/0378-4363(80)90214-4 ↗
29. Mo, Y., Ong, S. P. & Ceder, G. Insights into diffusion mechanisms in P2 layered oxide materials by first-principles calculations. Chem. Mater. 26, 5208–5214 (2014).10.1021/cm501563f ↗
30. Ceder, G., Hautier, G., Jain, A. & Ong, S. P. Recharging lithium battery research with first-principles methods. MRS Bull. 36, 185–191 (2011).10.1557/mrs.2011.31 ↗
31. Xu, B., Qian, D., Wang, Z. & Meng, Y. S. Recent progress in cathode materials research for advanced lithium ion batteries. Mater. Sci. Eng. R 73, 51–65 (2012).10.1016/j.mser.2012.05.003 ↗
32. Meng, Y. S. & Dompablo, M. E. A. Computational research of cathode materials for lithium-ion batteries. Acc. Chem. Res. 46, 1171–1180 (2013).10.1021/ar2002396 ↗
33. Islam, M. S. & Fisher, C. A. J. Lithium and sodium battery cathode materials: computational insights into voltage, diffusion and nanostructural properties. Chem. Soc. Rev. 43, 185–204 (2014).10.1039/C3CS60199D ↗
34. Glicksman, M. E. Diffusion in Solids: Field Theory, Solid-State Principles, and Applications, (Wiley-Interscience, 1999).
35. Balluffi, R. W., Allen, S. M. & Carter, W. C. Kinetics of Materials, (Wiley-Interscience, 2005).10.1002/0471749311 ↗
36. Vineyard, G. H. Frequency factors and isotope effects in solid state rate processes. J. Phys. Chem. Solids 3, 121–127 (1957).10.1016/0022-3697(57)90059-8 ↗
37. Jonsson, H., Mills, G. & Jacobsen, K. W. in Classical and Quantum Dynamics in Condensed Phase Simulations—Proceedings of the International School of Physics, (World Scientific Publishing, 1998) doi:10.1142/9789812839664_0016.
38. Van Der Ven, A. First Principles Investigation of the Thermydynamic and Kinetic Properties of Lithium Transition Metal Oxides, (Massachusetts Institute of Technology, 2000).
39. Pedone, A., Malavasi, G., Menziani, M. C., Cormack, A. N. & Segre, U. Article a new self-consistent empirical interatomic potential model for oxides, silicates, and silica-based glasses a new self-consistent empirical interatomic potential model for oxides, silicates, and silica-based glasses. J. Phys. Chem. B 110, 11780–11795 (2006).10.1021/jp0611018 ↗
40. Adams, S. & Rao, R. P. Structural requirements for fast lithium ion migration in Li10GeP2S12 . J. Mater. Chem. 22, 7687–7691 (2012).10.1039/c2jm16688g ↗
41. Mo, Y., Ong, S. P. & Ceder, G. First principles study of the Li10GeP2S12 lithium super ionic conductor material. Chem. Mater. 24, 15–17 (2012).10.1021/cm203303y ↗
42. Ong, S. P., Mo, Y., Richards, W. D., Miara, L., Lee, H. S. & Ceder, G. Phase stability, electrochemical stability and ionic conductivity of the Li10±1MP2X12M=Ge, Si, Sn, Al or P, and X=O, S or Se) family of superionic conductors. Energy Environ. Sci 6, 148–156 (2013).10.1039/C2EE23355J ↗
43. Car, R. & Parrinello, M. Unified approach for molecular dynamics and density-functional theory. Phys. Rev. Lett. 55, 2471–2474 (1985).10.1103/PhysRevLett.55.2471 ↗
44. Xu, M., Ding, J. & Ma, E. One-dimensional stringlike cooperative migration of lithium ions in an ultrafast ionic conductor. Appl. Phys. Lett. 101, 031901 (2012).10.1063/1.4737397 ↗
45. Kang, K., Meng, Y. S., Bréger, J., Grey, C. P. & Ceder, G. Electrodes with high power and high capacity for rechargeable lithium batteries. Science 311, 977–980 (2006).10.1126/science.1122152 ↗
46. Mortemard de Boisse, B., Carlier, D., Guignard, M. & Delmas, C. Structural and electrochemical characterizations of P2 and new O3-NaxMn1-yFeyO2 phases prepared by auto-combustion synthesis for na-ion batteries. J. Electrochem. Soc. 160, A569–A574 (2013).10.1149/2.032304jes ↗
47. Ammundsen, B., Rozière, J. & Islam, M. S. Atomistic simulation studies of lithium and proton insertion in spinel lithium manganates. J. Phys. Chem. B 101, 8156–8163 (1997).10.1021/jp971413y ↗
48. Ouyang, C. Y., Shi, S. Q., Wang, Z. X., Li, H., Huang, X. J. & Chen, L. Q. Ab initio molecular-dynamics studies on LixMn2O4 as cathode material for lithium secondary batteries. Europhys. Lett. 67, 28–34 (2004).10.1209/epl/i2004-10049-1 ↗
49. Xu, B. & Meng, S. Factors affecting Li mobility in spinel LiMn2O4—a first-principles study by GGA and GGA+U methods. J. Power Sources 195, 4971–4976 (2010).10.1016/j.jpowsour.2010.02.060 ↗
50. Yang, M. -C., Xu, B., Cheng, J. -H., Pan, C. -J., Hwang, B. -J. & Meng, Y. S. Electronic, structural, and electrochemical properties of LiNixCuyMn2–x–yO 4 (0<x<0.5, 0<y<0.5) high-voltage spinel materials. Chem. Mater. 23, 2832–2841 (2011).10.1021/cm200042z ↗
51. Nakayama, M., Kaneko, M. & Wakihara, M. First-principles study of lithium ion migration in lithium transition metal oxides with spinel structure. Phys. Chem. Chem. Phys. 14, 13963–13970 (2012).10.1039/c2cp42154b ↗
52. Ling, C. & Mizuno, F. Phase stability of post-spinel compound AMn2O4 (A=Li, Na, or Mg) and its application as a rechargeable battery cathode. Chem. Mater. 25, 3062–3071 (2013).10.1021/cm401250c ↗
53. Hewston, T. A. & Chamberland, B. L. A survey of first-row ternary oxides LiMO2 (M=Sc-Cu). J. Phys. Chem. Solids 48, 97–108 (1987).10.1016/0022-3697(87)90076-X ↗
54. Urban, A., Lee, J. & Ceder, G. The configurational space of rocksalt-type oxides for high-capacity lithium battery electrodes. Adv. Energy Mater. 4, 1400478 (2014).10.1002/aenm.201400478 ↗
55. Lee, J., Urban, A., Li, X., Su, D., Hautier, G. & Ceder, G. Unlocking the potential of cation-disordered oxides for rechargeable lithium batteries. Science 343, 519–522 (2014).10.1126/science.1246432 ↗
56. Hautier, G., Jain, A., Ong, S. P., Kang, B., Moore, C., Doe, R. & Ceder, G. Phosphates as lithium-ion battery cathodes: an evaluation based on high-throughput ab initio calculations. Chem. Mater. 23, 3495–3508 (2011).10.1021/cm200949v ↗
57. Islam, M. S., Driscoll, D. J., Fisher, C. A. J. & Slater, P. R. Atomic-scale investigation of defects, dopants, and lithium transport in the LiFePO4 Olivine-type battery material. Chem. Mater. 17, 5085–5092 (2005).10.1021/cm050999v ↗
58. Malik, R., Burch, D., Bazant, M. & Ceder, G. Particle size dependence of the ionic diffusivity. Nano Lett. 10, 4123–4127 (2010).10.1021/nl1023595 ↗
59. Moreau, P., Guyomard, D., Gaubicher, J. & Boucher, F. Structure and stability of sodium intercalated phases in olivine FePO4 . Chem. Mater. 22, 4126–4128 (2010).10.1021/cm101377h ↗
60. Zaghib, K., Trottier, J., Hovington, P., Brochu, F., Guerfi, A., Mauger, A. & Julien, C. M. Characterization of Na-based phosphate as electrode materials for electrochemical cells. J. Power Sources 196, 9612–9617 (2011).10.1016/j.jpowsour.2011.06.061 ↗
61. Oh, S. -M., Myung, S. -T., Hassoun, J., Scrosati, B. & Sun, Y. -K. Reversible NaFePO4 electrode for sodium secondary batteries. Electrochem. Commun. 22, 149–152 (2012).10.1016/j.elecom.2012.06.014 ↗
62. Bridson, J. N., Quinlan, S. E. & Tremaine, P. R. Synthesis and crystal structure of maricite and sodium iron(III) hydroxyphosphate. Chem. Mater. 10, 763–768 (1998).10.1021/cm9704847 ↗
63. Tripathi, R., Wood, S. M., Islam, M. S. & Nazar, L. F. Na-ion mobility in layered Na2FePO4F and olivine Na[Fe,Mn]PO4 . Energy Environ. Sci. 6, 2257–2264 (2013).10.1039/c3ee40914g ↗
64. Tamaru, M., Chung, S. -C., Shimizu, D., Nishimura, S. & Yamada, A. Pyrophosphate chemistry toward safe rechargeable batteries. Chem. Mater. 25, 2538–2543 (2013).10.1021/cm4010739 ↗
65. Barpanda, P., Nishimura, S. & Yamada, A. High-voltage pyrophosphate cathodes. Adv. Energy Mater. 2, 841–859 (2012).10.1002/aenm.201100772 ↗
66. Kim, H. H., Lee, S., Park, Y. -U., Kim, J., Jeon, S. & Kang, K. Neutron and X-ray diffraction study of pyrophosphate-based Li2–x MP2O7M=Fe, Co) for lithium rechargeable battery electrodes. Chem. Mater. 23, 3930–3937 (2011).10.1021/cm201305z ↗
67. Kim, H., Park, I., Seo, D. -H., Lee, S., Kim, S. -W., Kwon, W. J., Park, Y.-U., Kim, C. S., Jeon, S. & Kang, K. New iron-based mixed-polyanion cathodes for lithium and sodium rechargeable batteries: combined first principles calculations and experimental study. J. Am. Chem. Soc. 134, 10369–10372 (2012).10.1021/ja3038646 ↗
68. Clark, J. M., Nishimura, S., Yamada, A. & Islam, M. S. High-voltage pyrophosphate cathode: insights into local structure and lithium-diffusion pathways. Angew. Chem. Int. Ed. 51, 13149–13153 (2012).10.1002/anie.201205997 ↗
69. Kerr, T. A., Gaubicher, J. & Nazar, L. F. Highly reversible Li insertion at 4V in ɛ-VOPO4/α-LiVOPO4 cathodes. Electrochem. Solid-State Lett. 3, 460–462 (2000).10.1149/1.1391179 ↗
70. Barker, J., Saidi, M. Y. & Swoyer, J. L. Electrochemical insertion properties of the novel lithium vanadium fluorophosphate, LiVPO4F. J. Electrochem. Soc. 150, A1394–A1398 (2003).10.1149/1.1609998 ↗
71. Barker, J., Gover, R. K. B., Burns, P. & Bryan, A. A symmetrical lithium-ion cell based on lithium vanadium fluorophosphate, LiVPO4F. Electrochem. Solid-State Lett. 8, A285–A287 (2005).10.1149/1.1897352 ↗
72. Barker, J., Gover, R. K. B., Burns, P., Bryan, A., Saidi, M. Y. & Swoyer, J. L. Structural and electrochemical properties of lithium vanadium fluorophosphate, LiVPO4F. J. Power Sources 146, 516–520 (2005).10.1016/j.jpowsour.2005.03.126 ↗
73. Gover, R. K. B., Burns, P., Bryan, A., Saidi, M. Y., Swoyer, J. L. & Barker, J. LiVPO4F: a new active material for safe lithium-ion batteries. Solid State Ionics 177, 2635–2638 (2006).10.1016/j.ssi.2006.04.049 ↗
74. Mueller, T., Hautier, G., Jain, A. & Ceder, G. Evaluation of tavorite-structured cathode materials for lithium-ion batteries using high-throughput computing. Chem. Mater. 23, 3854–3862 (2011).10.1021/cm200753g ↗
75. Ling, C., Zhang, R. & Mizuno, F. Phase stability and its impact on the electrochemical performance of VOPO4 and LiVOPO4 . J. Mater. Chem. A 2, 12330–12339 (2014).10.1039/C4TA01708K ↗
76. Chen, Z., Chen, Q., Wang, H., Zhang, R., Zhou, H., Chen, L. & Whittingham, M. S. A β-VOPO4/ɛ-VOPO4 composite Li-ion battery cathode. Electrochem. Commun. 46, 67–70 (2014).10.1016/j.elecom.2014.06.009 ↗
77. Azmi, B. M., Ishihara, T., Nishiguchi, H. & Takita, Y. Cathodic performance of VOPO4 with various crystal phases for Li ion rechargeable battery. Electrochim. Acta 48, 165–170 (2002).10.1016/S0013-4686(02)00597-2 ↗
78. Azmi, B. M., Ishihara, T., Nishiguchi, H. & Takita, Y. Vanadyl phosphates of VOPO4 as a cathode of Li-ion rechargeable batteries. J. Power Sources 119-121, 273–277 (2003).10.1016/S0378-7753(03)00148-4 ↗
79. Dupré, N., Gaubicher, J., Le Mercier, T., Wallez, G., Angenault, J. & Quarton, M. Positive electrode materials for lithium batteries based on VOPO4 . Solid State Ionics 140, 209–221 (2001).10.1016/S0167-2738(01)00818-9 ↗
80. Dupré, N., Wallez, G., Gaubicher, J. & Quarton, M. Phase transition induced by lithium insertion in αI- and αII-VOPO4 . J. Solid State Chem. 177, 2896–2902 (2004).10.1016/j.jssc.2004.04.006 ↗
81. Harrison, K. L., Bridges, C. A., Segre, C. U., Varnado, C. D., Applestone, D., Bielawski, C. W., Paranthaman, M. P. & Manthiram, A. Chemical and electrochemical lithiation of LiVOPO4 cathodes for lithium-ion batteries. Chem. Mater. 26, 3849–3861 (2014).10.1021/cm501588j ↗
82. Harrison, K. L. & Manthiram, A. Microwave-assisted solvothermal synthesis and characterization of various polymorphs of LiVOPO4 . Chem. Mater. 25, 1751–1760 (2013).10.1021/cm400227j ↗
83. Song, Y., Zavalij, P. Y. & Whittingham, M. S. ɛ-VOPO4: electrochemical synthesis and enhanced cathode behavior. J. Electrochem. Soc. 152, A721–A728 (2005).10.1149/1.1862265 ↗
84. Adams, S. & Rao, R. P. Simulated defect and interface engineering for high power Li electrode materials. Solid State Ionics 184, 57–61 (2011).10.1016/j.ssi.2010.09.011 ↗
85. Ramzan, M., Lebègue, S., Kang, T. W. & Ahuja, R. Hybrid density functional calculations and molecular dynamics study of lithium fluorosulphate, a cathode material for lithium-ion batteries. J. Phys. Chem. C 115, 2600–2603 (2011).10.1021/jp110625a ↗
86. Liivat, A. & Thomas, J. O. Li-ion migration in Li2FeSiO4-related cathode materials: A DFT study. Solid State Ionics 192, 58–64 (2011).10.1016/j.ssi.2009.12.009 ↗
87. Liivat, A. Structural changes on cycling Li2FeSiO4 polymorphs from DFT calculations. Solid State Ionics 228, 19–24 (2012).10.1016/j.ssi.2012.08.016 ↗
88. Wu, S. Q., Zhu, Z. Z., Yang, Y. & Hou, Z. F. Structural stabilities, electronic structures and lithium deintercalation in Lix MSiO4 (M=Mn, Fe, Co, Ni): A GGA and GGA+U study. Comput. Mater. Sci. 44, 1243–1251 (2009).10.1016/j.commatsci.2008.08.014 ↗
89. Arroyo-de Dompablo, M. E., Armand, M., Tarascon, J. M. & Amador, U. On-demand design of polyoxianionic cathode materials based on electronegativity correlations: An exploration of the Li2MSiO4 system (M=Fe, Mn, Co, Ni). Electrochem. Commun. 8, 1292–1298 (2006).10.1016/j.elecom.2006.06.003 ↗
90. Su, D., Ahn, H. & Wang, G. Ab initio calculations on Li-ion migration in Li2FeSiO4 cathode material with a P21 symmetry structure. Appl. Phys. Lett. 99, 141909 (2011).10.1063/1.3645617 ↗
91. Saracibar, A., Van der Ven, A. & Arroyo-de Dompablo, M. E. Crystal structure, energetics, and electrochemistry of Li2FeSiO4 polymorphs from first principles calculations. Chem. Mater. 24, 495–503 (2012).10.1021/cm202818u ↗
92. Eames, C., Armstrong, A. R., Bruce, P. G. & Islam, M. S. Insights into changes in voltage and structure of Li2FeSiO4 polymorphs for lithium-ion batteries. Chem. Mater. 24, 2155–2161 (2012).10.1021/cm300749w ↗
93. Arroyo-de Dompablo, M. E., Dominko, R., Gallardo-Amores, J. M., Dupont, L., Mali, G., Ehrenberg, H., Jamnik, J. & Morán, E. On the energetic stability and electrochemistry of Li2MnSiO4 polymorphs. Chem. Mater. 20, 5574–5584 (2008).10.1021/cm801036k ↗
94. Longo, R. C., Xiong, K. & Cho, K. Multicomponent silicate cathode materials for rechargeable Li-ion batteries: an ab initio study. J. Electrochem. Soc. 160, A60–A65 (2013).10.1149/2.067301jes ↗
95. Seo, D. -H., Kim, H., Park, I., Hong, J. & Kang, K. Polymorphism and phase transformations of Li2−xFeSiO4 (0≤x≤2) from first principles. Phys. Rev. B 84, 220106 (2011).10.1103/PhysRevB.84.220106 ↗
96. Kuganathan, N. & Islam, M. S. Li2MnSiO4 lithium battery material: atomic-scale study of defects, lithium mobility, and trivalent dopants. Chem. Mater. 21, 5196–5202 (2009).10.1021/cm902163k ↗
97. Kumar, P. P. & Yashonath, S. A full interionic potential for Na1+xZr2SixP3–xO12 superionic conductors. J. Am. Chem. Soc. 124, 3828–3829 (2002).10.1021/ja017356a ↗
98. Kumar, P. P. & Yashonath, S. Structure, conductivity, and ionic motion in Na1+xZr2SixP3–xO12: a simulation study. J. Phys. Chem. B 106, 7081–7089 (2002).10.1021/jp020287h ↗
99. Lang, B., Ziebarth, B. & Elsässer, C. Lithium ion conduction in LiTi2(PO4)3 and related compounds based on the NASICON structure: a first-principles study. Chem. Mater. 27, 5040–5048 (2015).10.1021/acs.chemmater.5b01582 ↗
100. Inaguma, Y., Liquan, C., Itoh, M., Nakamura, T., Uchida, T., Ikuta, H. & Wakihara, M. High ionic conductivity in lithium lanthanum titanate. Solid State Commun. 86, 689–693 (1993).10.1016/0038-1098(93)90841-A ↗