Unravelling the Role of Electrochemically Active FePO(4) Coating by Atomic Layer Deposition for Increased High-Voltage Stability of LiNi(0.5)Mn(1.5)O(4) Cathode Material

通过原子层沉积法揭示电化学活性FePO₄涂层在提高LiNi₀.₅Mn₁.₅O₄正极材料高压稳定性中的作用

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作者：Xiao,Biwei,Liu,Jian,Sun,Qian,Wang,Biqiong,Banis,Mohammad Norouzi,Zhao,Dong,Wang,Zhiqiang,Li,Ruying,Cui,Xiaoyu,Sham,Tsun-Kong,Sun,Xueliang
期刊：Advanced Science影响因子：14.100
时间：2015起止号：2015 May;2(5):1500022
doi：10.1002/advs.201500022

Abstract

Ultrathin amorphous FePO(4) coating derived by atomic layer deposition (ALD) is used to coat the 5 V LiNi(0.5)Mn(1.5)O(4) cathode material powders, which dramatically increases the capacity retention of LiNi(0.5)Mn(1.5)O(4). It is believed that the amorphous FePO(4) layer could act as a lithium-ions reservoir and electrochemically active buffer layer during the charge/discharge cycling, helping achieve high capacities in LiNi(0.5)Mn(1.5)O(4), especially at high current densities.

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