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author:

Han, Xiao (Han, Xiao.) [1] | Liu, Ailin (Liu, Ailin.) [2] | Wang, Shihao (Wang, Shihao.) [3] | Liu, Yuanyuan (Liu, Yuanyuan.) [4] | Li, Saichao (Li, Saichao.) [5] | Zhang, Yinggan (Zhang, Yinggan.) [6] | Zheng, Hongfei (Zheng, Hongfei.) [7] | Sa, Baisheng (Sa, Baisheng.) [8] | Wang, Laisen (Wang, Laisen.) [9] | Lin, Jie (Lin, Jie.) [10] | Qu, Baihua (Qu, Baihua.) [11] | Xie, Qingshui (Xie, Qingshui.) [12] | Peng, Dong-Liang (Peng, Dong-Liang.) [13]

Indexed by:

EI

Abstract:

High-capacity Li-rich layered oxides (LLOs) suffer from severe structure degradation due to the utilization of hybrid anion- and cation-redox activity. The native post-cycled structure, composed of progressively densified defective spinel layer (DSL) and intrinsic cations mixing, is deemed as the hindrance of the rapid and reversible de/intercalation of Li+. Herein, the artificial post-cycled structure consisting of artificial DSL and inner cations mixing is in situ constructed, which would act as a shield against the irreversible oxygen emission and undesirable transition metal migration by suppressing anion redox activity and modulating cation mixing. Eventually, the modified DSL-2% Li-rich cathode demonstrates remarkable electrochemical properties with a high discharge capacity of 187 mAh g−1 after 500 cycles at 2 C, and improved voltage stability. Even under harsh operating conditions of 50 °C, DSL-2% can provide a high discharge capacity of 168 mAh g−1 after 250 cycles at 2 C, which is much higher than that of pristine LLO (92 mAh g−1). Furthermore, the artificial post-cycled structure provides a novel perspective on the role of native post-cycled structure in sustaining the lattice structure of the lithium-depleted region and also provides an insightful universal design principle for highly stable intercalated materials with anionic redox activity. © 2023 Wiley-VCH GmbH.

Keyword:

Cathodes Digital subscriber lines Electronic structure Lithium compounds Mixing Positive ions Redox reactions Transition metals

Community:

  • [ 1 ] [Han, Xiao]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 2 ] [Liu, Ailin]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 3 ] [Wang, Shihao]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 4 ] [Liu, Yuanyuan]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 5 ] [Li, Saichao]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 6 ] [Zhang, Yinggan]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 7 ] [Zheng, Hongfei]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 8 ] [Sa, Baisheng]Multiscale Computational Materials Facility, College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 9 ] [Wang, Laisen]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 10 ] [Lin, Jie]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 11 ] [Qu, Baihua]College of Materials Science and Engineering, Chongqing University, Chongqing; 400044, China
  • [ 12 ] [Xie, Qingshui]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 13 ] [Xie, Qingshui]Shenzhen Research Institute of Xiamen University, Xiamen University, Shenzhen; 518000, China
  • [ 14 ] [Peng, Dong-Liang]State Key Laboratory of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen; 361005, China

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Small

ISSN: 1613-6810

Year: 2023

Issue: 47

Volume: 19

1 3 . 0

JCR@2023

1 3 . 0 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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