Thermodynamic/Electrochemical Description of High-Voltage Spinels for Lithium-Ion Batteries
文献类型：期刊论文
| 作者 | Li, Dajian; Zhang, Weibin; Chang, Keke; Yuan, Yuan; Seifert, Hans J. |
| 刊名 | JOURNAL OF THE ELECTROCHEMICAL SOCIETY
 |
| 出版日期 | 2020 |
| 卷号 | 167期号:13 |
| 关键词 | CATHODE MATERIALS THERMODYNAMIC DESCRIPTION LI NI CO LINI0.5MN1.5O4 PERFORMANCE LIMN2O4 CR MN |
| DOI | 10.1149/1945-7111/abb7ec |
| 英文摘要 | High-voltage (HV) spinels obtained by partially substituting Mn with other elements in LiMn2O4 are promising cathode materials for lithium-ion batteries (LIBs) due to their superior energy capacities and recyclability. The improved performance of HV spinels comes from the appearance of multi voltage plateaus without phase transformation during lithiation/delithiation process. To optimize the doping elements is one significant routine to develop new cathode materials. However, it is difficult to investigate HV spinels with multi doping elements due to increased variables. For the first time, we investigate the typical HV spinel, Li(Ni, Mn)(2)O-4 using one single thermodynamic model with Compound Energy Formalism (CEF), i.e., (Va, Li+)(1) (Li+, Ni2+, Ni4+, Mn3+, Mn4+)(2)(O2-)(4) and described Ni substitution of Mn as well as lithiation/delithiation behaviours. Both the high voltage (around 4.7 V) and low voltage (around 4.1 V) plateaus of the Li-Ni-Mn-O spinel cathodes are predicted by correctly describing competition between Mn3+/Mn4+ and Ni2+/Ni4+ redox pairs. Meanwhile, we have successfully modelled the key property parameters including the voltage profile, energy density, stability, and cyclability. The presented design scheme is based on the superior cell performance compared to the widely studied LiNi0.5Mn1.5O4, which results in the slightly Li-rich HV spinel Li1+xNi0.5Mn1.5-xO4 because of higher energy density and improved cyclability. The here adopted research strategy enables efficient design of the new-generation multi-doped HV spinel Li(M, Mn)(2)O-4 (M = Li, Al, Co, Cr, Cu, Mg, Fe, Ni, Zn, etc.). (c) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited. |
| 学科主题 | Electrochemistry ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20213]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | Li, DJ (corresponding author), Karlsruhe Inst Technol, Inst Appl Mat Appl Mat Phys IAM AWP, D-76344 Eggenstein Leopoldshafen, Germany. |
| 推荐引用方式 GB/T 7714 | Li, Dajian,Zhang, Weibin,Chang, Keke,et al. Thermodynamic/Electrochemical Description of High-Voltage Spinels for Lithium-Ion Batteries[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2020,167(13). |
| APA | Li, Dajian,Zhang, Weibin,Chang, Keke,Yuan, Yuan,&Seifert, Hans J..(2020).Thermodynamic/Electrochemical Description of High-Voltage Spinels for Lithium-Ion Batteries.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,167(13). |
| MLA | Li, Dajian,et al."Thermodynamic/Electrochemical Description of High-Voltage Spinels for Lithium-Ion Batteries".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 167.13(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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