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author：

Zheng, Hongfei (Zheng, Hongfei.) [1] | Zhang, Chenying (Zhang, Chenying.) [2] | Zhang, Yinggan (Zhang, Yinggan.) [3] | Lin, Liang (Lin, Liang.) [4] | Liu, Pengfei (Liu, Pengfei.) [5] | Wang, Laisen (Wang, Laisen.) [6] | Wei, Qiulong (Wei, Qiulong.) [7] | Lin, Jie (Lin, Jie.) [8] | Sa, Baisheng (Sa, Baisheng.) [9] | Xie, Qingshui (Xie, Qingshui.) [10] | Peng, Dong-Liang (Peng, Dong-Liang.) [11]

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EI

Abstract：

Manipulating　the　local　electronic　structure　is　employed　to　address　the　capacity/voltage　decay　and　poor　rate　capability　of　Li-rich　layered　cathodes　(LLOs)　via　the　dual-doping　of　Na+　and　F−　ions,　as　well　as　the　regulation　of　Li+/Ni2+　intermixing　and　the　content　of　＇Li-O-Li＇　configuration.　The　designed　cathode　exhibits　a　high　initial　Coulombic　efficiency　of　about　90%,　large　specific　capacity　of　296 mAh g−1　and　energy　density　of　1047 Wh kg−1　at　0.2　C,　and　a　superior　rate　capability　of　222 mAh g−1　at　5　C　with　a　good　capacity　retention　of　85.7%　even　after　500　cycles.　And　the　operating　voltage　is　increased　without　compromising　the　high-capacity　advantage.　Such　improved　electrochemical　performances　primarily　result　from　the　band　shift　of　the　TM　3d-O　2p　and　non-bonding　O-2p　to　lower　energy,　which　would　decrease　Li+　diffusion　activation　energy　and　increase　oxygen　vacancy　forming　energy,　finally　improving　the　Li+　diffusion　kinetics　and　stabilizing　lattice　oxygen.　Moreover,　the　increased　＇Li-O-Li＇　configuration　in　the　Li2MnO3　phase　via　increasing　the　Mn　concentration　can　increase　the　reversible　capacity　to　offset　the　negative　effect　of　inactive　doping　and　Li+/Ni2+　intermixing.　This　strategy　of　modulating　the　local　electronic　structure　of　LLOs　provides　great　potential　to　design　high-energy-density　Li-ion　batteries.　©　2021　Wiley-VCH　GmbH

Keyword：

Activation energy Cathodes Electronic structure Lithium compounds Lithium-ion batteries Oxygen

Community：

  • [ 1 ] [Zheng, Hongfei]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 2 ] [Zhang, Chenying]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 3 ] [Zhang, Yinggan]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 4 ] [Lin, Liang]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 5 ] [Liu, Pengfei]Zhengzhou Key Laboratory of Big Data Analysis and Application, Henan Academy of Big Data, Zhengzhou University, Zhengzhou; 450052, China
  • [ 6 ] [Wang, Laisen]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 7 ] [Wei, Qiulong]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 8 ] [Lin, Jie]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 9 ] [Sa, Baisheng]Multiscale Computational Materials Facility, College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 10 ] [Xie, Qingshui]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China
  • [ 11 ] [Peng, Dong-Liang]State Key Lab of Physical Chemistry of Solid Surface, Fujian Key Laboratory of Materials Genome, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen; 361005, China

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Advanced Functional Materials

ISSN： 1616-301X

Year： 2021

Issue： 30

Volume： 31

1 9 . 9 2 4

JCR@2021

1 8 . 5 0 0

JCR@2023

ESI HC Threshold：142

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： 2

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