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Rational Combination of an Alabandite MnS Laminated Pyrrhotite Fe1-xS Nanocomposite as a Superior Anode Material for High Performance Sodium-Ion Battery

Title
Rational Combination of an Alabandite MnS Laminated Pyrrhotite Fe1-xS Nanocomposite as a Superior Anode Material for High Performance Sodium-Ion Battery
Author
김동원
Keywords
Pyrrhotite Fe1-xS; Alabandite MnS; Composite anode; Sodium-ion battery; Energy storage
Issue Date
2019-03
Publisher
AMER CHEMICAL SOC
Citation
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v. 7, NO 6, Page. 5921-5930
Abstract
Conversion-based transition metal sulfide compounds have been considered as a promising anode material for sodium-ion batteries (SIBs). The major obstacle of these conversion-type anode materials is a large volume change in the course of sodium-ion conversion, which deteriorates their structural stability. Herein, we report a rational combination of pyrrhotite Fe1-xS with alabandite MnS as an anode material with the subsided structural degradation and improved storage ability for SIB. Impressively, the Fe1-xS/MnS composite electrode initially delivered a discharge capacity of 602 mAh g(-1) at 100 mA g(-1) with good cycling stability and excellent rate capability, which reveals its enhanced sodium-ion storage capacity as compared to its pristine electrodes (Fe1-xS, MnS). Electrochemical impedance spectroscopy and cyclic voltammetry analyses demonstrate the enhanced rate performance and improved cycling stability of the Fe1-xS/MnS composite electrode as well as better pseudocapacitive contribution. The cooperative effect of the Fe1-xS/MnS composite anode makes it as a promising anode material for SIBs.
URI
https://pubs.acs.org/doi/10.1021/acssuschemeng.8b05904http://repository.hanyang.ac.kr/handle/20.500.11754/108925
ISSN
2168-0485
DOI
10.1021/acssuschemeng.8b05904
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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