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[期刊论文]

In situ growth of Co3O4 coating layer derived from MOFs on LiNi0.8Co0.15Al0.05O2 cathode materials

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Author:

Hao, ZhenDong (Hao, ZhenDong.) | Xu, XiaoLong (Xu, XiaoLong.) | Deng, SiXu (Deng, SiXu.) | Unfold

Indexed by:

EI Scopus SCIE

Abstract:

LiNi0.8Co0.15Al0.05O2 (NCA) has become one of the research focuses due to its advantages including low cost and high reversible capacity. However, many drawbacks such as the dissolution of the cation into the electrolyte caused by hydrofluoric acid severely limited its electrochemical performance. In this study, Co3O4 derived from metal-organic frameworks (MOFs) is coated on the surface of commercial NCA utilizing in situ growth followed by annealing. The structure and morphology of the samples are characterized by X-ray diffraction, scanning electron microscope, and transmission electron microscope. NCA@Co3O4 delivers a remarkable capacity retention of 73.7% and 84.4% at 1C and 2C after 100cycles at each rate, respectively. Meanwhile, the rate performance of NCA@Co3O4 is significantly improved. The inhibition of the side reaction between cathode materials and electrolyte, and the reduced charge-transfer resistance that brought by Co3O4 coating layer are the main reasons for the excellent electrochemical performance.

Keyword:

In situ growth MOFs derived Co3O4 LiNi0.8Co0.15Al0.05O2 Surface coating

Author Community:

  • [ 1 ] [Hao, ZhenDong]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 2 ] [Xu, XiaoLong]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 3 ] [Deng, SiXu]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Hao]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 5 ] [Liu, JingBing]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 6 ] [Yan, Hui]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 汪浩

    [Wang, Hao]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China

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Source :

IONICS

ISSN: 0947-7047

Year: 2019

Issue: 6

Volume: 25

Page: 2469-2476

2 . 8 0 0

JCR@2022

ESI Discipline: PHYSICS;

ESI HC Threshold:123

JCR Journal Grade:2

Cited Count:

WoS CC Cited Count: 13

SCOPUS Cited Count: 13

30 Days PV: 1

Online/Total:266/5887249
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