κΉνμ
2016-10-28T00:37:43Z
2016-10-28T00:37:43Z
2015-04
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v. 36, NO 4, Page. 1209-1214
0253-2964
1229-5949
http://onlinelibrary.wiley.com/doi/10.1002/bkcs.10231/abstract
http://hdl.handle.net/20.500.11754/23963
Submicrosized chevrel Mo6S8 powder is synthesized using mechanical milling of the starting materials and the powder yield is increased by using modified synthesis method. The effect of particle size is investigated using various electrochemical techniques. The submicrosized chevrel shows enhanced discharge capacity compared with that of microsized chevrel, and voltage profile indicates that the low capacity arising from Mg trapping at the Mg-1 site is improved for submicrosized chevrel. Mg trapping is also verified by ex situ X-ray diffraction measurement and the results are in good agreement with the electrochemical profile. Open-circuit voltage measurements and AC-impedance spectroscopy are used to identify the kinetics of Mg2+ insertion. The improved electrochemical properties obtained with the submicrosized chevrel are attributed to the smaller particles that provide shorter diffusion lengths for Mg2+ ions.
This work was supported by the Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (Project no. 20112010100140) grant funded by the Korea government Ministry of Trade, Industry & Energy.
en
KOREAN CHEMICAL SOC
Magnesium rechargeable batteries
Chevrel
Size effect
Mg trapping
Cathode
Size Effect of Chevrel MgxMo6S8 as Cathode Material for Magnesium Rechargeable Batteries
Article
4
36
10.1002/bkcs.10231
1209-1214
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Cho, Woosuk
Moon, Bora
Woo, Sang-Gil
Kim, Jae-Hun
Park, Min-Sik
Kim, Jeom-Soo
Kim, Hansu
Kim, Young-Jun
2015003699
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF ENERGY ENGINEERING
khansu