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author：

Han, X. (Han, X..) [1] | Liu, A. (Liu, A..) [2] | Wang, S. (Wang, S..) [3] | Liu, Y. (Liu, Y..) [4] | Li, S. (Li, S..) [5] | Zhang, Y. (Zhang, Y..) [6] | Zheng, H. (Zheng, H..) [7] | Sa, B. (Sa, B..) [8] | Wang, L. (Wang, L..) [9] | Lin, J. (Lin, J..) [10] | Qu, B. (Qu, B..) [11] | Xie, Q. (Xie, Q..) [12] | Peng, D.-L. (Peng, D.-L..) [13]

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Scopus

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：

artificial post-cycled structures cation mixing cycling stability electronic structure modulation Li-rich layered cathodes

Community：

  • [ 1 ] [Han X.]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 A.]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 S.]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 Y.]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 S.]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 Y.]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 H.]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 B.]Multiscale Computational Materials Facility, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350100, China
  • [ 9 ] [Wang L.]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 J.]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 B.]College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
  • [ 12 ] [Xie Q.]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 Q.]Shenzhen Research Institute of Xiamen University, Xiamen University, Shenzhen, 518000, China
  • [ 14 ] [Peng D.-L.]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

ESI HC Threshold：49

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 1

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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