High tap density of Ni3(PO4)2 coated LiNi1/3Co1/3Mn1/3O2 with enhanced cycling performance at high cut-off voltage

Yan Cui; Shengming Xu

doi:10.1016/j.cjche.2014.03.001

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High tap density of Ni₃(PO₄)₂ coated LiNi_1/3Co_1/3Mn_1/3O₂ with enhanced cycling performance at high cut-off voltage

材料与产品工程 | Updated：2026-01-06

- High tap density of Ni₃(PO₄)₂ coated LiNi_1/3Co_1/3Mn_1/3O₂ with enhanced cycling performance at high cut-off voltage
- High tap density of Ni₃(PO₄)₂ coated LiNi_1/3Co_1/3Mn_1/3O₂ with enhanced cycling performance at high cut-off voltage
- 中国化学工程学报（英文版） 2015年23卷第1期页码：315-320
- Affiliations：
  
  Institute of Nuclear and New Energy Technology, Tsinghua University,Beijing,China,100084
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.03.001
  中图分类号：
- 纸质出版：2015
- Accepted：
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Yan Cui, Shengming Xu. High tap density of Ni₃(PO₄)₂ coated LiNi_1/3Co_1/3Mn_1/3O₂ with enhanced cycling performance at high cut-off voltage[J]. 中国化学工程学报（英文版）, 2015,23(1):315-320. DOI: 10.1016/j.cjche.2014.03.001.

(PO
Yan Cui, Shengming Xu. High tap density of Ni₃(PO₄)₂ coated LiNi_1/3Co_1/3Mn_1/3O₂ with enhanced cycling performance at high cut-off voltage[J]. 中国化学工程学报（英文版）, 2015,23(1):315-320. DOI: 10.1016/j.cjche.2014.03.001. DOI：

(PO DOI： 10.1016/j.cjche.2014.03.001.

摘要

Abstract

The LiNi

1/3

is first obtained by the controlled crystallization method and then coatedwith Ni

(PO

)

particles. The effects of the coating on rate capability and cycle life at high cut-off voltage are investigated by electrochemical impedance spectroscopy and galvanostatic measurements. The element ratio of Ni:Mn:Co is tested by inductively-coupled plasma spectrometer (ICP) analysis and it testified to be 1:1:1. It is indicated that Ni

(PO

)

-coated LiNi

1/3

has an outstanding capacity retention

where 99% capacity retention is maintained after 10 cycles at 5C discharge rate between 2.7 V and 4.6 V. The electrochemical impedance spectroscopy (EIS) results show that the current exchange density i0 of the coated sample is higher than that of LiNi

1/3

which is beneficial to its electrochemical performances. All the conclusions show that the Ni

(PO

)

coating can prominently enhance the high rat

e performance of the LiNi

1/3

especially at high cut-off voltage.

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