Li-rich Mn-based cathode materials (LRM) exhibit high specific capacity because of both cationic and anionic redox activity and are expected to be developed and applied as cathode materials for a new generation of high-energy density lithium-ion batteries. Nevertheless, the ...
Li-rich Mn-based layered oxides (LMR) hold promise as cathode materials for lithium-ion batteries (LIBs) due to their high reversible capacity. However, issues such as oxygen release and structural degradation associated with oxygen redox cause voltage decay and capacity decline during cycling. In...
Herein, we reveal that the enhancement of oxygen redox reversibility and the mitigation of TM migration in Li-rich Mn-based oxide (Li1.2Mn0.6Ni0.2O2) materials with oxygen vacancies are closely related to the adjustment ofd–dCoulomb interactionU. The enhancedd–dexcitation of Mn and the loweri...
11.Jicheng Zhang, Xiangfeng Liu*, et al. Addressing voltage decay in Li-rich cathodes by broadening the gap between metallic and anionic bands.Nat Commun.2021, 12, 3071 12. Zhijie Feng, Bingkun Guo*, et al. Adjusting Oxygen Redox Reaction and Structural Stability of Li- and Mn-Rich Cath...
Li-rich 3d-transition metal layered oxides xLi2MnO3·(1 − x)LiMO2, one of the increasingly prospective cathode materials for high energy–density lithium-ion batteries, have attracted intensive attention by the research community. Nevertheless, their practical commercial applications are hindere...
锂离子电池在循环和存储过程中会产气,造成电池体积膨胀、极片/隔膜错位以及电池极化增加,是导致电池寿命衰减甚至引发安全问题的重要原因。层状金属氧化物锂离子电池正极材料NCM,LCO,Li-rich在充电过程产气种类和机制基本一致,目前主要关注的气体种类有...
In this study, we took Li1.21Ni0.28Mn0.51O2as a typical example of Li-rich Mn-based oxides to explore. Feasible precipitation–calcination route is adopted to introduce Li2ZrO3slabs into Li2MnO3domain in Li-rich oxide (LSLR) and a referenced Li-rich oxide (LR) is also synthesized. Indu...
A thin polyaniline layer that was covered on the surface of the microrod-like lithium-rich Mn-based oxide (LMO, Li_(1.2)Mn_(0.54)Co_(0.13)Ni_(0.13)O_2) was... W Chen,J Chen,J Deng - 《International Journal of Energy Research》 被引量: 0发表: 2022年 富锂锰基正极材料Li1.2Ni0.1...
Li2MnO3 component plays a key role in Li-rich Mn-based layered materials (mLi(2)MnO(3)center dot nLiMO(2), M = Mn, Ni, Co, etc.) for achieving unusually high lithium storage capacity. However, detailed lithium storage mechanism in Li2MnO3, such as structure evolution and charge comp...
Li1.2Mn0.55Ni0.2O2 not only exhits a stable operating voltage upon cycling, but also a high capacity retention is also attained. The stabilization mechanisms of the nonstoichiometric Li-rich oxides have been deeply studied, manifesting the formation of Ni3+ ions in the nonstoichiometric Li-rich...