Robust Strategy for Crafting Li5Cr7Ti6O25@CeO2 Composites as High-Performance Anode Material for Lithium-Ion Battery
Source abstract
Abstract
A facile strategy was developed to prepare Li 5 Cr 7 Ti 6 O 25 @CeO 2 composites as a high-performance anode material. X-ray diffraction (XRD) and Rietveld refinement results show that the CeO 2 coating does not alter the structure of Li 5 Cr 7 Ti 6 O 25 but increases the lattice parameter. Scanning electron microscopy (SEM) indicates that all samples have similar morphologies with a homogeneous particle distribution in the range of 100–500 nm. Energy-dispersive spectroscopy (EDS) mapping and high-resolution transmission electron microscopy (HRTEM) prove that CeO 2 layer successfully formed a coating layer on a surface of Li 5 Cr 7 Ti 6 O 25 particles and supplied a good conductive connection between the Li 5 Cr 7 Ti 6 O 25 particles. The electrochemical characterization reveals that Li 5 Cr 7 Ti 6 O 25 @CeO 2 (3 wt %) electrode shows the highest reversibility of the insertion and deinsertion behavior of Li ion, the smallest electrochemical polarization, the best lithium-ion mobility among all electrodes, and a better electrochemical activity than the pristine one. Therefore, Li 5 Cr 7 Ti 6 O 25 @CeO 2 (3 wt %) electrode indicates the highest delithiation and lithiation capacities at each rate. At 5 C charge–discharge rate, the pristine Li 5 Cr 7 Ti 6 O 25 only delivers an initial delithiation capacity of ∼94.7 mAh g –1, and the delithiation capacity merely achieves 87.4 mAh g –1 even after 100 cycles. However, Li 5 Cr 7 Ti 6 O 25 @CeO 2 (3 wt %) delivers an initial delithiation capacity of 107.5 mAh·g –1, and the delithiation capacity also reaches 100.5 mAh g –1 even after 100 cycles. The cerium dioxide modification is a direct and efficient approach to improve the delithiation and lithiation capacities and cycle property of Li 5 Cr 7 Ti 6 O 25 at large current densities.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People’s Republic of China
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People’s Republic of China
School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, People’s Republic of China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Anhui Province · Anhui Provincial Science Fund for Excellent Young Scholars
References (65)
Show source-provided references
1. 10.1021/acsami.7b0458410.1021/acsami.7b04584 ↗
2. 10.1016/j.electacta.2016.10.07610.1016/j.electacta.2016.10.076 ↗
3. 10.1002/smll.20160084510.1002/smll.201600845 ↗
4. 10.1016/j.electacta.2016.07.11510.1016/j.electacta.2016.07.115 ↗
5. 10.1016/j.jpowsour.2011.08.07910.1016/j.jpowsour.2011.08.079 ↗
6. 10.1016/j.jpowsour.2016.06.01610.1016/j.jpowsour.2016.06.016 ↗
7. 10.1021/acsami.6b0774210.1021/acsami.6b07742 ↗
8. 10.1016/j.electacta.2016.11.07310.1016/j.electacta.2016.11.073 ↗
9. 10.1016/j.jpowsour.2014.04.05110.1016/j.jpowsour.2014.04.051 ↗
10. 10.1016/j.electacta.2015.06.02110.1016/j.electacta.2015.06.021 ↗
11. 10.1016/j.jpowsour.2013.01.05610.1016/j.jpowsour.2013.01.056 ↗
12. 10.1016/j.electacta.2013.05.15110.1016/j.electacta.2013.05.151 ↗
13. 10.1021/ja301266w10.1021/ja301266w ↗
14. 10.1021/acsami.6b0164410.1021/acsami.6b01644 ↗
15. 10.1021/acsami.5b1020710.1021/acsami.5b10207 ↗
16. 10.1021/am500294m10.1021/am500294m ↗
17. 10.1002/aenm.20160032210.1002/aenm.201600322 ↗
18. 10.1016/j.jallcom.2016.04.20910.1016/j.jallcom.2016.04.209 ↗
19. 10.1021/acsami.6b0475210.1021/acsami.6b04752 ↗
20. 10.1021/acsami.6b0790210.1021/acsami.6b07902 ↗
21. 10.1039/C4TA06882C10.1039/C4TA06882C ↗
22. 10.1016/j.jpowsour.2017.01.03310.1016/j.jpowsour.2017.01.033 ↗
23. 10.1021/jp906894v10.1021/jp906894v ↗
24. 10.1149/1.139394410.1149/1.1393944 ↗
25. 10.1002/cphc.20120039810.1002/cphc.201200398 ↗
26. 10.1039/C5CC05349H10.1039/C5CC05349H ↗
27. 10.1016/j.jallcom.2017.01.34210.1016/j.jallcom.2017.01.342 ↗
28. 10.1039/C5RA00523J10.1039/C5RA00523J ↗
29. 10.1016/j.electacta.2015.12.10310.1016/j.electacta.2015.12.103 ↗
30. 10.1016/j.jpowsour.2014.02.00510.1016/j.jpowsour.2014.02.005 ↗
31. 10.1021/acssuschemeng.6b0228010.1021/acssuschemeng.6b02280 ↗
32. 10.1016/j.apcata.2016.10.00510.1016/j.apcata.2016.10.005 ↗
33. 10.1021/acssuschemeng.6b0113710.1021/acssuschemeng.6b01137 ↗
34. 10.1016/j.jpowsour.2014.12.13210.1016/j.jpowsour.2014.12.132 ↗
35. 10.1021/acsami.7b0023210.1021/acsami.7b00232 ↗
36. 10.1016/j.electacta.2016.05.04010.1016/j.electacta.2016.05.040 ↗
37. 10.1016/j.electacta.2016.06.15810.1016/j.electacta.2016.06.158 ↗
38. 10.1016/j.jallcom.2015.05.23910.1016/j.jallcom.2015.05.239 ↗
39. 10.1039/c2jm33346e10.1039/c2jm33346e ↗
40. 10.1016/j.jpowsour.2011.06.00210.1016/j.jpowsour.2011.06.002 ↗
41. 10.1016/j.jallcom.2010.12.16010.1016/j.jallcom.2010.12.160 ↗
42. 10.1016/j.electacta.2015.05.00810.1016/j.electacta.2015.05.008 ↗
43. 10.1016/j.electacta.2013.08.16210.1016/j.electacta.2013.08.162 ↗
44. 10.1016/j.ceramint.2011.07.00710.1016/j.ceramint.2011.07.007 ↗
45. 10.1016/j.electacta.2011.03.09210.1016/j.electacta.2011.03.092 ↗
46. 10.1016/j.electacta.2016.11.07310.1016/j.electacta.2016.11.073 ↗
47. 10.1016/j.ceramint.2016.09.08210.1016/j.ceramint.2016.09.082 ↗
48. 10.1016/j.electacta.2013.07.05810.1016/j.electacta.2013.07.058 ↗
49. 10.1016/j.ssi.2015.03.03310.1016/j.ssi.2015.03.033 ↗
50. 10.1016/j.jpowsour.2014.05.00210.1016/j.jpowsour.2014.05.002 ↗
51. 10.1016/j.electacta.2015.12.10310.1016/j.electacta.2015.12.103 ↗
52. 10.1016/j.ceramint.2008.10.01010.1016/j.ceramint.2008.10.010 ↗
53. 10.1016/j.powtec.2015.10.02410.1016/j.powtec.2015.10.024 ↗
54. 10.1021/acssuschemeng.5b0050510.1021/acssuschemeng.5b00505 ↗
55. 10.1016/j.jssc.2011.05.01210.1016/j.jssc.2011.05.012 ↗
56. 10.1016/j.jpowsour.2010.04.00510.1016/j.jpowsour.2010.04.005 ↗
57. 10.1016/j.jallcom.2017.02.17510.1016/j.jallcom.2017.02.175 ↗
58. 10.1016/j.jpowsour.2017.03.06510.1016/j.jpowsour.2017.03.065 ↗
59. 10.1016/j.electacta.2017.02.08410.1016/j.electacta.2017.02.084 ↗
60. 10.1038/nnano.2007.41110.1038/nnano.2007.411 ↗
61. 10.1016/j.jallcom.2014.08.24010.1016/j.jallcom.2014.08.240 ↗
62. 10.1016/j.nanoen.2014.11.03110.1016/j.nanoen.2014.11.031 ↗
63. 10.1016/j.jpowsour.2013.03.14110.1016/j.jpowsour.2013.03.141 ↗
64. 10.1149/1.192288910.1149/1.1922889 ↗
65. 10.1016/0167-2738(96)00214-710.1016/0167-2738(96)00214-7 ↗