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A Universal Organic Cathode for Ultrafast Lithium and Multivalent Metal Batteries

Journal Article · · Angewandte Chemie (International Edition)
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  1. Department of Chemical and Biomolecular Engineering University of Maryland College Park MD 20742 USA
  2. Electrochemistry Branch Sensor and Electron Devices Directorate Power and Energy Division U.S. Army Research Laboratory Adelphi MD 20783 USA
  3. Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
Abstract

Low‐cost multivalent battery chemistries (Mg 2+ , Al 3+ ) 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 + , Mg 2+ , Al 3+ ) 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 (>20 C), and wide operating temperature range (−40 to 50 °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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0001160
OSTI ID:
1437068
Alternate ID(s):
OSTI ID: 1537487
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 24 Vol. 57; ISSN 1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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