Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 22, Pages 7238-7243Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201901840
Keywords
conversion reactions; mixed-conducting networks; nanospheres; sodium-ion batteries; V2S3 spheres
Categories
Funding
- National Key R&D Research Program of China [2018YFB0905400]
- National Natural Science Foundation of China [51622210, 51872277]
- Fundamental Research Funds for the Central Universities [WK3430000004]
- DNL cooperation Fund, CAS [DNL180310]
- Sofja Kovalevskaja Award
- Max Planck Society
- European Union [823717]
- Alexander von Humboldt Foundation
Ask authors/readers for more resources
The development of suitable anode materials is far from satisfactory and is a major scientific challenge for a competitive sodium-ion battery technology. Metal sulfides have demonstrated encouraging results, but still suffer from sluggish kinetics and severe capacity decay associated with the phase change. Herein we show that rational electrode design, that is, building efficient electron/ion mixed-conducting networks, can overcome the problems resulting from conversion reactions. A general strategy for the preparation of hierarchical carbon-coated metal sulfide (MS subset of C) spheres through thermal sulfurization of metal glycerate has been developed. We demonstrate the concept by synthesizing highly uniform hierarchical carbon coated vanadium sulfide (V2S3 subset of C) spheres, which exhibit a highly reversibly sodium storage capacity of 777mAhg(-1) at 100mAg(-1), excellent rate capability (410mAhg(-1) at 4000mAg(-1)), and impressive cycling ability.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available