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Author:

Wang, Le (Wang, Le.) | Zhang, Lijuan (Zhang, Lijuan.)

Indexed by:

EI Scopus SCIE

Abstract:

Iron selenides are considered as potential anode materials for sodium-ion batteries (SIBs) because of its low cost and high theoretical specific capacity. Yet the severe volume expansion leading to capacity degradation has critically hindered its utilization in SIBs. Herein, FeSe2 with layered hollow structure (noted as LHFeSe2) was designed and synthesized by KCl template method. Hollow nanostructures formed by salt templates alleviate the capacity attenuation caused by volume expansion, and the interlayer structure of LH-FeSe2 also increases the Na+ storage capacity and ion diffusion rate. The as-acquired LH-FeSe2 performs good cycling stability with high retention capacity of 517 mA h g-1 after 500 cycles at 1 A g-1. In addition, LH-FeSe2 with small specific surface area shows extremely high pseudocapacitive behavior, suggesting that it is an intrinsic pseudocapacitive material. This method provides a new horizon for the preparation of high-performance anode materials for SIBs.

Keyword:

FeSe 2 Salt template Sodium-ion battery

Author Community:

  • [ 1 ] [Wang, Le]Beijing Univ Technol, Fac Environm & Life, Ctr Environm Safety & Biol Effects, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Lijuan]Beijing Univ Technol, Fac Environm & Life, Ctr Environm Safety & Biol Effects, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China

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Source :

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

ISSN: 1572-6657

Year: 2023

Volume: 937

4 . 5 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:20

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 11

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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