Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 26, Issue 44, Pages 8103-8110Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201602248
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Funding
- Thousand Talents Plan for Young Professionals of China
- Outstanding Young Scholar Program of Tianjin University
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Exceptional cycling performance of graphite anode in K-ion batteries is demonstrated with a reversible capacity of 246 mAh g(-1) and 89% retention of the initial capacity after 200 cycles. Although the graphite anode experiences huge volume change and worse kinetics during K intercalation/deintercalation, the cycling stability delivered in K-ion batteries is comparable to that of Li-ion batteries using the same graphite anode. The combination of excellent electrochemical performance, the abundance and wide availability of K in earth's crust, and the well-developed technology of the graphite anode make the K-ion battery very attractive for offering a low cost battery chemistry for large-scale energy storage applications.
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