• 文献标题:   Phosphorus-Functionalized Graphene for Lithium-Ion Capacitors with Improved Power and Cyclability
  • 文献类型:   Article, Early Access
  • 作  者:   MORENOFERNANDEZ G, GRANADOSMORENO M, GOMEZURBANO JL, CARRIAZO D
  • 作者关键词:   activated carbon, long stability, metalion hybrid capacitor, phosphorus functionalization, supercapacitor
  • 出版物名称:   BATTERIES SUPERCAPS
  • ISSN:  
  • 通讯作者地址:   Basque Res Technol Alliance BRTA
  • 被引频次:   0
  • DOI:   10.1002/batt.202000247 EA DEC 2020
  • 出版年:  

▎ 摘  要

Herein, we report an easy approach for the preparation of graphene-based materials suitable as electrodes for lithium-ion capacitors (LICs). To the best of our knowledge, this is the first time that phosphorus-functionalized graphene oxide (rGO800-P) is used as negative (battery-type) electrode in LICs technology. An activated carbon derived from the pyrolysis of graphene-carbon composite served as positive (capacitor-type) electrode. While phosphorus functionalization on the negative electrode enables fast Li+ kinetics during insertion/extraction processes, the flat-shaped morphology, large surface area and proper pore size distribution of the positive electrode enhance the double-layer formation. Full LICs optimization, oversizing the negative electrode allows operating in the extended voltage window of 1.5-4.5 V delivering high energy and power values (91 Wh kg(AM)(-1) at 145 W kg(AM)(-1) and 33 Wh kg(AM)(-1) at 26,000 W kg(AM)(-1)) without compromising the cycling performance (76 % capacitance retention after 10,000 cycles).