A Practical High-Performance Lithium-Ion Capacitor Fabricated with Dual Graphene-Based Electrode Materials

被引：0
作者：
Hu, Tao [1 ,2 ]
Zhang, Xiong [1 ,2 ,3 ]
Li, Chen [1 ,3 ]
Zhao, Shasha [1 ,2 ]
An, Yabin [1 ,2 ,3 ]
Zhang, Xiaohu [1 ,3 ]
Sun, Xianzhong [1 ,3 ]
Wang, Kai [1 ,2 ,3 ]
Ma, Yanwei [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Elect Engn, State Key Lab High Dens Electromagnet Power & Syst, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Inst Elect Engn & Adv Electromagnet Drive Technol, Jinan 250013, Peoples R China
来源：
ADVANCED MATERIALS TECHNOLOGIES | 2025年
基金：
中国国家自然科学基金;
关键词：
energy density; graphene; lithium-ion capacitors; power density; self-propagating high-temperature synthesis; SOFT CARBON; STRATEGY; ANODE;
D O I：
10.1002/admt.202500004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lithium-ion capacitors (LICs) hold great promise by merging the benefits of lithium-ion batteries and supercapacitors. However, their performance is frequently constrained by a disparity in the kinetic properties of the cathode and anode. This study introduces a dual graphene-based approach aimed at improving the efficiency and functionality of LICs and demonstrates the successful large-scale production of graphene (SHSG) using a self-propagating high-temperature synthesis method. In the cathode, SHSG forms a continuous graphene network, reducing interfacial resistance, enhancing conductivity and achieving a capacity of 85.9 mAh g-1. In the anode, SHSG improves ion diffusion and reaction interfaces, increasing capacity from 247.9 to 286.6 mAh g-1. A full LIC cell assembled with 10% SHSG in both electrodes demonstrates a peak energy density of 106.3 Wh kg-1 and retains 33 Wh kg-1 at 4.4 kW kg-1, which is calculated based on the total mass of the electrodes. Additionally, a 1100 F LIC pouch cell is developed, showcasing its potential for practical energy storage. This work underscores the transformative role of graphene in optimizing LICs and advancing energy storage technologies.
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页数：10
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