Solvothermal synthesis-driven quaternary Ni-rich cathode for stability-improved Li-ion batteries

被引：8
作者：
Kim, Sung-Beom [1 ]
Ahn, So-Yeon [1 ]
Kim, Ji-Hwan [1 ]
Jang, Jae-Sung [1 ]
Park, Kyung-Won [1 ]
机构：
[1] Soongsil Univ, Dept Chem Engn, Seoul 06978, South Korea
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2023年 / 146卷
基金：
新加坡国家研究基金会;
关键词：
Lithium-ion batteries; Quaternary Ni-rich cathode; Aluminum doping; Solvothermal synthesis; LAYERED CATHODE; LITHIUM; OXIDE; PERFORMANCE; AL; DEGRADATION; TRANSITION; DIFFUSION; KINETICS; VOLTAGE;
D O I：
10.1016/j.elecom.2022.107426
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Recently, Ni-rich ternary transition metal oxides (Li(NiCoMn)O2, NCM) containing more than 80% Ni have been extensively studied as high-capacity cathodes. Herein, we synthesized a quaternary cathode, Ni-rich Al-doped NCM, using a facile solvothermal method without an additional Al doping process. Compared to an undoped NCM cathode, the quaternary Ni-rich cathode exhibited improved lithium-ion battery performance (retentions of 82.0% and 65.8% after 100 and 250 cycles, respectively). In particular, the superior stability of the quaternary Ni-rich cathode may result from the stable cathode structure resulting from Al doping.
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页数：5
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