期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 24, 页码 7146-7150出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201803703
关键词
aluminum; lithium ion batteries; magnesium; multivalent batteries; organic cathodes
资金
- Nanostructures for Electrical Energy Storage (NEES), an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DESC0001160]
- Maryland NanoCenter
- US National Science Foundation [1438198]
Low-cost multivalent battery chemistries (Mg2+, Al3+) have been extensively investigated for large-scale energy storage applications. However, their commercialization is plagued by the poor power density and cycle life of cathodes. A universal polyimides@CNT (PI@CNT) cathode is now presented that can reversibly store various cations with different valences (Li+, Mg2+, Al3+) at an extremely fast rate. The ion-coordination charge storage mechanism of PI@CNT is systemically investigated. Full cells using PI@CNT cathodes and corresponding metal anodes exhibit long cycle life (>10000 cycles), fast kinetics (>20C), and wide operating temperature range (-40 to 50 degrees C), making the low-cost industrial polyimides universal cathodes for different multivalent metal batteries. The stable ion-coordinated mechanism opens a new foundation for the development of high-energy and high-power multivalent batteries.
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