首页|Carbon nanocages bridged with graphene enable fast kinetics for dual-carbon lithium-ion capacitors

Carbon nanocages bridged with graphene enable fast kinetics for dual-carbon lithium-ion capacitors

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Lithium-ion capacitors(LICs)combining the advantages of lithium-ion batteries and supercapacitors are considered a promising next-generation energy storage device.However,the sluggish kinetics of battery-type anode cannot match the capacitor-type cathode,restricting the development of LICs.Herein,hierarchical carbon framework(HCF)anode material composed of 0D carbon nanocage bridged with 2D graphene network are developed via a template-confined synthesis process.The HCF with nanocage structure reduces the Li+transport path and benefits the rapid Li+migration,while 2D graphene network can promote the electron interconnecting of carbon nanocages.In addition,the doped N atoms in HCF facilitate to the adsorption of ions and enhance the pseudo contribution,thus accelerate the kinetics of the anode.The HCF anode delivers high specific capacity,remarkable rate capability.The LIC pouch-cell based on HCF anode and active HCF(a-HCF)cathode can provide a high energy density of 162 Wh kg-1 and a superior power density of 15.8 kW kg-1,as well as a long cycling life exceeding 15,000 cycles.This study demonstrates that the well-defined design of hierarchical carbon framework by incorporating 0D carbon nanocages and 2D graphene network is an effective strategy to promote LIC anode kinetics and hence boost the LIC electrochemical performance.

Hierarchical carbon frameworkNanocageZIFGrapheneLithium-ion capacitors

Shani Li、Yanan Xu、Wenhao Liu、Xudong Zhang、Yibo Ma、Qifan Peng、Xiong Zhang、Xianzhong Sun、Kai Wang、Yanwei Ma

展开 >

Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing,100190,China

University of Chinese Academy of Sciences,Beijing,100049,China

Beijing Institute of Technology,Beijing,100081,China

Innovation Academy for Green Manufacture,Beijing,100190,China

School of Materials Science and Engineering,Zhengzhou University,Zhengzhou,450001,China

展开 >

国家自然科学基金国家自然科学基金北京市自然科学基金DNL Cooperation Fund,CASDNL Cooperation Fund,CASInnovation Academy for Green Manufacture Fund中国科学院青年创新促进会项目

5182270652107234JQ19012DNL201912DNL201915IAGM2020C02Y2021052

2024

10.1016/j.gee.2022.10.006

绿色能源与环境(英文)

绿色能源与环境(英文)

CSTPCD
ISSN：
年,卷(期)：2024.9(3)
  • 55