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author：

He, Wei (He, Wei.) [1] | Liu, Pengfei (Liu, Pengfei.) [2] | Zhang, Yinggan (Zhang, Yinggan.) [3] | Lin, Jie (Lin, Jie.) [4] | Qu, Baihua (Qu, Baihua.) [5] | Zheng, Zhiming (Zheng, Zhiming.) [6] | Wang, Jin (Wang, Jin.) [7] | Zhang, Yiming (Zhang, Yiming.) [8] | Sa, Baisheng (Sa, Baisheng.) [9] | Wang, Laisen (Wang, Laisen.) [10] | Xie, Qingshui (Xie, Qingshui.) [11] | Peng, Dong-Liang (Peng, Dong-Liang.) [12]

Indexed by：

EI

Abstract：

The　commercialization　prospect　of　Li-rich　Mn-based　(LRM)　cathode　materials　lies　in　their　high　energy　density　(＞900　Wh　kg−1),　but　the　practical　application　in　many　scenarios　is　hindered　by　their　low　intrinsic　ionic　conductivity.　Herein,　we　increase　the　ionic　conductivity　and　cycling　performance　of　LRM　cathode　materials　by　utilizing　the　different　distribution　habit　of　La3+　and　Zr4+.　La　atoms　tend　to　accumulate　on　the　grain　surface,　while　Zr4+　is　likely　to　be　doped　into　the　bulk　of　LRM　cathode,　which　is　confirmed　by　the　theoretical　calculation　and　experimental　results.　The　surface　is　modified　by　the　island-shaped　and　conductive　LaMnO3+δ　(LMO)　and　La2Zr2O7　(LZO)　compounds,　constructing　a　triple-phase　interface　(TPI)　for　the　rapid　lithium-ion　diffusion.　Meanwhile,　the　bulk　LRM　lattices　are　doped　by　Zr4+　to　stabilize　the　layered　framwork.　The　modified　LRM　cathode　calcined　at　650　°C　exhbits　a　high　specific　capacity　of　192.6　mAh　g−1　after　200　cycles　at　2C　rate　with　superior　Li+　diffusion　coefficients　and　enhanced　rate　capability.　This　study　sheds　light　on　how　to　rationally　improving　the　ionic　conductivity　of　LRM　cathode　for　its　practical　application.　©　2021

Keyword：

Cathodes Diffusion Ionic conductivity Lanthanum Lanthanum compounds Lithium Manganese compounds Phase interfaces Zirconium Zirconium compounds

Community：

  • [ 1 ] [He, Wei]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 2 ] [Liu, Pengfei]Zhengzhou Key Laboratory of Big Data Analysis and Application, Henan Academy of Big Data, Zhengzhou University, Zhengzhou; 450002, China
  • [ 3 ] [Zhang, Yinggan]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 4 ] [Lin, Jie]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 5 ] [Qu, Baihua]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 6 ] [Zheng, Zhiming]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 7 ] [Wang, Jin]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 8 ] [Zhang, Yiming]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 9 ] [Sa, Baisheng]Multiscale Computational Materials Facility, College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 10 ] [Wang, Laisen]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 11 ] [Xie, Qingshui]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China
  • [ 12 ] [Peng, Dong-Liang]Department of Materials Science and Engineering, State Key Lab of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials and Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen; 361005, China

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Source ：

Journal of Power Sources

ISSN： 0378-7753

Year： 2021

Volume： 499

9 . 7 9 4

JCR@2021

8 . 1 0 0

JCR@2023

ESI HC Threshold：142

JCR Journal Grade：1

CAS Journal Grade：2

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WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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