Surface modification of LiMn2O4 cathode with LaCoO3 by a molten salt method for lithium ion batteries
Source abstract
Abstract
Abstract Spinel LiMn2O4 is a promising cathode due to its advantages of low-cost, nontoxicity and thermal stability. However, the dissolution of manganese and the phase transformation induce the rapid capacity fade. Surface coating is an effective method to improve its electrochemical performance. In this work, spinel LiMn2O4 modified with perovskite LaCoO3 was prepared using a novel molten salt method. The resulted samples were characterized by X-ray diffraction (XRD), transmission/scanning electron microscopy (TEM/SEM), Fourier transformation infrared (FT-IR), Raman, and X-ray photoelectronic spectroscopy. The content of Mn3+ increased with the LaCoO3 coating accompanied by the increased concentration of oxygen vacancy. LiMn2O4 modified with 2% LaCoO3 shows a higher capacity and cycling stability than others at 0.2 C, while the cathode with 4% LaCoO3 shows the best rate performance at a larger current at 2 and 5 C. This enhanced performance can be attributed to improved interfacial conductivity between the cathode and electrolyte and the protective effects of coating.
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Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
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References (48)
Show source-provided references
1. Performance and cost of materials for lithium-based rechargeable automotive batteries10.1038/s41560-018-0107-2 ↗
2. A solid future for battery development10.1038/nenergy.2016.141 ↗
3. Evolution of strategies for modern rechargeable batteries10.1021/ar2002705 ↗
4. Lithium manganese spinel cathodes for lithium-ion batteries
5. Dissolution, migration, and deposition of transition metal ions in Li-ion batteries exemplified by Mn-based cathodes - a critical review10.1039/C7EE03122J ↗
6. Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating10.1016/j.jpowsour.2012.07.058 ↗
7. Jahn-Teller instability in spinel Li-Mn-O10.1016/S0378-7753(99)00106-8 ↗
8. Structural stability and superior electrochemical performance of Sc-doped LiMn2O4 spinel as cathode for lithium ion batteries10.1016/j.electacta.2019.01.174 ↗
9. Synthesis and electrochemical characterization of multi-cations doped spinel LiMn2O4 used for lithium ion batteries10.1016/j.jpowsour.2011.09.062 ↗
10. Enhanced electrochemical performances via introducing LiF electrolyte additive for lithium ion batteries10.1016/j.ceramint.2019.05.216 ↗
11. About the compatibility between high voltage spinel cathode materials and solid oxide electrolytes as a function of temperature10.1021/acsami.6b09059 ↗
12. Hetero-epitaxial growth of Li0.17La0.6TiO3 solid electrolyte on LiMn2O4 electrode for all solid-state batteries10.1016/j.ssi.2013.09.040 ↗
13. ZrO2- and Li2ZrO3-stabilized spinel and layered electrodes for lithium batteries10.1016/S1388-2481(03)00179-6 ↗
14. The effect of ZnO coating on electrochemical cycling behavior of spinel LiMn2O4 cathode materials at elevated temperature10.1149/1.1580819 ↗
15. AlF3-coated LiMn2O4 as cathode material for aqueous rechargeable lithium battery with improved cycling stability10.1016/j.jpowsour.2016.06.049 ↗
16. Enhanced cycling stability of LiMn2O4 cathode by amorphous FePO4 coating10.1016/j.electacta.2011.04.131 ↗
17. Enhanced cyclic stability at elevated temperature of spinel LiNi0.5Mn1.5O4 by Li4Ti5O12 coating as cathode material for high voltage lithium ion batteries10.1016/j.ceramint.2018.11.209 ↗
18. Stabilizing a high-voltage LiNi0.5Mn1.5O4 cathode towards all solid state batteries: a Li-Al-Ti-P-O solid electrolyte nano-shell with a host material10.1039/C9NR01655D ↗
19. Facile synthesis of nanosized lithium-ion-conducting solid electrolyte Li1.4Al0.4Ti1.6(PO4)3 and its mechanical nanocomposites with LiMn2O4 for enhanced cyclic performance in lithium ion batteries10.1021/acsami.6b16233 ↗
20. Characterization of Sr-doped LaMnO3 and LaCoO3 as cathode materials for a doped LaGaO3 ceramic fuel cell10.1149/1.1837262 ↗
21. Enhanced cycle stability at high rate and excellent high rate capability of La0.7Sr0.3Mn0.7Co0.3O3-coated LiMn2O410.1016/j.jpowsour.2014.09.183 ↗
22. Enhanced rate and high-temperature performance of La0.7Sr0.3MnO3-coated LiNi0.5Mn1.5O4 cathode materials for lithium ion battery10.1016/j.jpowsour.2012.04.090 ↗
23. Improved cycle performance of LiMn2O4 cathode material for aqueous rechargeable lithium battery by LaF3 coating10.1016/j.jallcom.2015.09.085 ↗
24. Characterization of surface-modified LiMn2O4 cathode materials with indium tin oxide (ITO) coatings and their electrochemical performance10.1016/j.jallcom.2013.10.149 ↗
25. Porous CoF2 spheres synthesized by a one-pot solvothermal method as high capacity cathode materials for lithium-ion batteries10.1002/cjoc.201600229 ↗
26. Synthesis and properties of optimized LiFePO4/C by a CVD-assisted two-step coating method10.1007/s11051-014-2598-5 ↗
27. Electrochemical and structural investigation on ultrathin ALD ZnO and TiO2 coated lithium-rich layered oxide cathodes10.1021/acssuschemeng.8b04285 ↗
28. Sputtering TiO2 on LiCoO2 composite electrodes as a simple and effective coating to enhance high-voltage cathode performance10.1016/j.jpowsour.2017.02.035 ↗
29. Molten-salt-mediated synthesis and low-temperature electrical conduction of LnCoO3 (Ln = Pr, Nd, Sm, and Gd)10.1016/j.jallcom.2014.05.130 ↗
30. Molten salt shielded synthesis of oxidation prone materials in air10.1038/s41563-019-0328-1 ↗
31. General structure analysis system (GSAS)
32. An infrared spectroscopic study of the low-spin to intermediate-spin state ((1)A(1)-T-3(1)) transition in rare earth cobaltates, LnCoO(3) (Ln = La, Pr and Nd)10.1016/S0009-2614(01)00439-0 ↗
33. Lattice dynamics and vibrational spectra of lithium manganese oxides: a computer simulation and spectroscopic study10.1021/jp984398l ↗
34. Raman microspectrometry applied to the study of electrode materials for lithium batteries10.1021/cr800344k ↗
35. Lattice vibrations of materials for lithium rechargeable batteries I. Lithium manganese oxide spinel10.1016/S0921-5107(02)00582-2 ↗
36. Spectroscopic studies on cation-doped spinel LiMn2O4 for lithium ion batteries10.1016/S0167-2738(01)00968-7 ↗
37. Surface chemistry and lithium-ion exchange in LiMn2O4 for the electrochemical selective extraction of LiCl from natural salt lake brines10.1021/acs.jpcc.5b11722 ↗
38. Influence of microstucture on the charge storage properties of chemically synthesized manganese dioxide10.1021/cm020408q ↗
39. Preparation of manganese oxide thin films by electrolysis/chemical deposition and electrochromism10.1149/1.1376637 ↗
40. Manganese oxide thin film preparation by potentiostatic electrolyses and electrochromism10.1149/1.1393515 ↗
41. Design and synthesis of hierarchical MnO2 nanospheres/carbon nanotubes/conducting polymer ternary composite for high performance electrochemical electrodes10.1021/nl101723g ↗
42. Critical roles of semi-conductive LaFeO3 coating in enhancing cycling stability and rate capability of 5 V LiNi0.5Mn1.5O4 cathode materials10.1016/j.electacta.2017.11.059 ↗
43. Significant improvement in performances of LiNi0.5Mn1.5O4 through surface modification with high ordered Al-doped ZnO electro-conductive layer10.1016/j.apsusc.2015.01.120 ↗
44. XPS study of surface absorbed oxygen of ABO3 mixed oxides10.1016/S1002-0721(08)60128-3 ↗
45. Depolarization effect to enhance the performance of lithium ions batteries10.1016/j.nanoen.2017.02.011 ↗
46. Understanding the improved electrochemical performances of Fe-substituted 5 V spinel cathode LiMn1.5Ni0.5O410.1021/jp904276t ↗
47. Superior capacity, rate, long cycle life and high temperature performance of multilayered porous ultralong LiMn2O4 nanorods for lithium ion batteries10.1016/j.jelechem.2018.09.039 ↗
48. Hierarchical porous onion-shaped LiMn2O4 as ultrahigh-rate cathode material for lithium ion batteries10.1007/s12274-018-1986-z ↗