| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
|
|
|
|
|
| Homogeneous Precipitation Assisted Li2ZrO3 Coating LiNi0.85Co0.1Mn0.05O2 for Improving Its Electrochemical Performance |
| WU Jian, LI Jianying, LI Shaomin, LIU Hao
|
| Chengdu Development Center of Science and Technology of CAEP, Chengdu 610207, China |
|
|
|
|
Abstract The specific capacity of Ni-rich cathode materials increases with the increase of Ni content, which corresponds to the endurance mileage of electric vehicle which needs to be improved urgently. However, surface coating can effectively inhibit the adverse effects of its shortcomings on commercialization, but common coatings can lead to the interface that is unfriendly to lithium ion transmission, while Li2ZrO3 coating can effectively avoid this problem. Chemical precipitation method is widely used in surface coating because of its low cost and simplicity. Urea can effectively reduce the reaction rate and improve the uniformity of the reaction. Therefore, urea-assisted chemical precipitation method was used to precipitate Zr (OH)4 uniformly on the surface of precursor, and then Li2ZrO3 coated Ni-rich cathode material was synthesized through synchronous lithiation. The material characterization shows that the improved chemical precipitation method is helpful to form a uniform coating layer, the high temperature step of synchronization lithization can cause agglomeration and Li2ZrO3 surface coating can improve the chemical environment of Ni-rich cathode materials. The electrochemical performance test of the cathode material shows that Li2ZrO3 coating can improve the electrochemical performance of Ni-rich cathode material and effectively inhibit the growth of charge transfer impedance.
|
|
Published: 12 March 2020
|
|
|
| Fund:This work was financially supported by the Sichuan Science and Technology Plan Project (2019JDJQ0046). |
| About author:: Jian Wureceived his Bachelor degree in June 2016 from University of Electronic Science and Technology of China in engineering. From September 2016 to June 2019, he learned at China Academy of Engineering Physics (CAEP), focusing on the research of energy storage materials and devices; Hao Liuis a professor in Chengdu Development Center of Science and Technology of CAEP. He received his Ph.D. in 2010 from Department of Mechanical and Materials Engineering of the University of Western Ontario. After a short period postdoctoral research in Western Surface Science, he joined CAEP. His current research interests lie within the design of novel nanomaterials for clean energy, especially for batteries. |
|
|
1 Manthiram A, Knight J C, Myung S T, et al. Advanced Energy Mate-rials, 2016, 6 (1), 1501010.
2 Koyama Y, Tanaka I, Adchi H, et al. Journal of Power Source, 2003, S119-121,644.
3 Yang L, Ravdel B, Lucht B L, et al. Electrochemical and Solid-State Letters, 2010, 13,A95.
4 Su Y, Cui S, Zhou Z, et al. ACS Applied Materials & Interfaces, 2015,7,25105.
5 Chen X, Ma F, Li Y, et al.Electrochimica Acta, 2018, 284,526.
6 Chen Z, Kim G T, Guang Y, et al. Journal of Power Source, 2018, 402,263.
7 Xu Y, Liu Y, Lu Z, et al. Applied Surface Science, 2016, 361,150.
8 Wang M, Zhang R, Gong Y, et al. Solid State Ionics, 2017, 312,53.
9 Okada K, Machida N, Naito M, et al.Solid State Ionics, 2014, 255,120.
10 Song B, Li W, Oh S M, et al. ACS Applied Materials & Interfaces, 2017, 9 (11),9718.
11 Jo C H, Cho D H, Noh H J, et al. Nano Research, 2014, 8 (5),1464.
12 Li L, Chen Z, Zhang Q, et al.Journal of Materials Chemistry A, 2015, 3 (2),894.
13 Baklanova Y V, Arapova I Y, Buzlukov A L, et al. Journal of Solid State Chemistry, 2013, 208,43.
14 Zhou Y, Dong H, Liu G, et al. Journal of Solid State Electrochemistry, DOI:10.1007/s10008-018-4130-9.
15 Wu H, Wang Z, Liu S, et al. ChemElectroChem, 2015, 2,1921.
16 Cheng C, Tan L, Liu H, et al. Materials Research Bulletin, 2011, 46,2032.
17 Li N, An R, Su Y,et al. Journal of Materials Chemistry A, 2013, 1,9760.
18 Huang Y, Chen J, Ni J, et al. Jounal of Power Sources, 2009, 188,538.
19 Miao X, Ni H, Zhang H, et al. Journal of Power Sources, 2014, 264,147.
20 Wu H, Wang Z, Liu S, et al. ChemElectroChem, 2015, 2,1921.
21 Zhou L, Wu H, Tian M, et al.RSC Advances, 2016, 6 (74), 69790.
22 Zhang Y, Wang Z B, Yu F D, et al.Journal of Power Sources, 2017, 358,1. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2020, Vol. 34 
