κΉλμ
2019-08-22T05:18:47Z
2019-08-22T05:18:47Z
2019-03
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v. 7, NO 6, Page. 5921-5930
2168-0485
https://pubs.acs.org/doi/10.1021/acssuschemeng.8b05904
https://repository.hanyang.ac.kr/handle/20.500.11754/108925
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.
This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea Government (2017R1C1B2012700) and the Basic Science Research Program of NRF, funded by the Ministry of Science, ICT, and Future Planning (2016R1A4A1012224).
en
AMER CHEMICAL SOC
Pyrrhotite Fe1-xS
Alabandite MnS
Composite anode
Sodium-ion battery
Energy storage
Rational Combination of an Alabandite MnS Laminated Pyrrhotite Fe1-xS Nanocomposite as a Superior Anode Material for High Performance Sodium-Ion Battery
Article
6
7
10.1021/acssuschemeng.8b05904
5921-5930
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Veerasubramani, Ganesh Kumar
Park, Myung-Soo
Choi, Jin-Yi
Lee, Yun-Sung
Kim, Sang Jae
Kim, Dong-Won
2019039164
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF CHEMICAL ENGINEERING
dongwonkim
https://orcid.org/0000-0002-1735-0272