Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 31, Pages 10500-10505Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904258
Keywords
concentrated electrolyte; graphite anode; long-term stability; operando XRD; potassium ion battery
Categories
Funding
- National Natural Science Foundation of China [51672078, 21473052, and 61474041] Funding Source: Medline
- Foundation of State Key Laboratory of Coal Conversion [J17-18-903] Funding Source: Medline
- Hunan University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Independent Research Project [71675004] Funding Source: Medline
Ask authors/readers for more resources
Graphite as an anode for the potassium ion battery (PIBs) has the merits of low cost and potentially high energy density, while suffering from limited cycle time and inferior stability. Herein we, using a concentrated electrolyte, demonstrate that formation of a robust inorganic-rich passivation layer on the graphite anode could resolve these problems. Consequently, the PIBs with graphite anode could operate for over 2000 cycles (running time of over 17 months) with negligible capacity decay, and had a high area capacity over 7.36 mAh cm(-2) with a high mass loading of 28.56 mg cm(-2). These unprecedented performances of graphite are comparable to that of traditional lithium-ion batteries, and may promote the rapidly development of high performance PIBs.
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