Revealing the Effect of High Ni Content in Li-Rich Cathode Materials : Mitigating Voltage Decay or Increasing Intrinsic Reactivity
Ju, Xiaokang ; Hou, Xu LU
; Liu, Zhongqing
; Du, Leilei
; Zhang, Li
; Xie, Tangtang
; Paillard, Elie
; Wang, Taihong
; Winter, Martin
and Li, Jie
(2023)
In Small
19(20).
- Abstract
Li-rich layered oxides are considered as one of the most promising cathode materials for secondary lithium batteries due to their high specific capacities, but the issue of continuous voltage decay during cycling hinders their market entry. Increasing the Ni content in Li-rich materials is assumed to be an effective way to address this issue and attracts recent research interests. However, a high Ni content may induce increased intrinsic reactivity of materials, resulting in severe side reactions with the electrolyte. Thus, a comprehensive study to differentiate the two effects of the Ni content on the cell performance with Li-rich cathode is carried out in this work. Herein, it is demonstrated that a properly dosed amount of Ni can... (More)
Li-rich layered oxides are considered as one of the most promising cathode materials for secondary lithium batteries due to their high specific capacities, but the issue of continuous voltage decay during cycling hinders their market entry. Increasing the Ni content in Li-rich materials is assumed to be an effective way to address this issue and attracts recent research interests. However, a high Ni content may induce increased intrinsic reactivity of materials, resulting in severe side reactions with the electrolyte. Thus, a comprehensive study to differentiate the two effects of the Ni content on the cell performance with Li-rich cathode is carried out in this work. Herein, it is demonstrated that a properly dosed amount of Ni can effectively suppress the voltage decay in Li-rich cathodes, while over-loading of Ni, on the contrary, can cause structural instability, Ni dissolution, and nonuniform Li deposition during cycling as well as severe oxygen loss. This work offers a deep understanding on the impacts of Ni content in Li-rich materials, which can be a good guidance for the future design of such cathodes for high energy density lithium batteries.
(Less)
- author
- Ju, Xiaokang
; Hou, Xu
LU
; Liu, Zhongqing
; Du, Leilei
; Zhang, Li
; Xie, Tangtang
; Paillard, Elie
; Wang, Taihong
; Winter, Martin
and Li, Jie
- publishing date
- 2023-05-17
- type
- Contribution to journal
- publication status
- published
- keywords
- cycle stability, high Ni content, Li-rich cathodes, mitigating voltage decay, oxygen loss
- in
- Small
- volume
- 19
- issue
- 20
- article number
- 2207328
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:85148435873
- ISSN
- 1613-6810
- DOI
- 10.1002/smll.202207328
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2023 The Authors. Small published by Wiley-VCH GmbH.
- id
- 3631fb5d-2698-4bd6-bce4-9a53ae12bd2b
- date added to LUP
- 2025-12-05 22:30:58
- date last changed
- 2025-12-11 12:36:47
@article{3631fb5d-2698-4bd6-bce4-9a53ae12bd2b,
abstract = {{<p>Li-rich layered oxides are considered as one of the most promising cathode materials for secondary lithium batteries due to their high specific capacities, but the issue of continuous voltage decay during cycling hinders their market entry. Increasing the Ni content in Li-rich materials is assumed to be an effective way to address this issue and attracts recent research interests. However, a high Ni content may induce increased intrinsic reactivity of materials, resulting in severe side reactions with the electrolyte. Thus, a comprehensive study to differentiate the two effects of the Ni content on the cell performance with Li-rich cathode is carried out in this work. Herein, it is demonstrated that a properly dosed amount of Ni can effectively suppress the voltage decay in Li-rich cathodes, while over-loading of Ni, on the contrary, can cause structural instability, Ni dissolution, and nonuniform Li deposition during cycling as well as severe oxygen loss. This work offers a deep understanding on the impacts of Ni content in Li-rich materials, which can be a good guidance for the future design of such cathodes for high energy density lithium batteries.</p>}},
author = {{Ju, Xiaokang and Hou, Xu and Liu, Zhongqing and Du, Leilei and Zhang, Li and Xie, Tangtang and Paillard, Elie and Wang, Taihong and Winter, Martin and Li, Jie}},
issn = {{1613-6810}},
keywords = {{cycle stability; high Ni content; Li-rich cathodes; mitigating voltage decay; oxygen loss}},
language = {{eng}},
month = {{05}},
number = {{20}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Small}},
title = {{Revealing the Effect of High Ni Content in Li-Rich Cathode Materials : Mitigating Voltage Decay or Increasing Intrinsic Reactivity}},
url = {{http://dx.doi.org/10.1002/smll.202207328}},
doi = {{10.1002/smll.202207328}},
volume = {{19}},
year = {{2023}},
}