AlCl3-graphite intercalation compounds as negative electrode materials for lithium-ion capacitors

Yamato Haniu,Toshiyuki Momma,Wataru Sugimoto,Hiroki Nara,Tetsuya Osaka,Seongki Ahn

doi:10.1039/d1ta08378c

Abstract

AlCl3-graphite intercalation compounds (AlCl3-GICs) with a wide interlayer spacing benefit faster Li+ diffusion. The low molecular weight and conversion reaction of the AlCl3 pillar further enhance the specific capacity per mass.

Highlights

The recent increase in demand for efficient use of clean energy and the reduction of CO2 emissions has expanded requirements for energy storage devices
We report the properties of AlCl3-graphite intercalation compounds (GICs), which are derived from carbon with a low graphitization degree, as a negative electrode for Lithium-ion capacitors (LICs)
This study describes the synthesis and characterization of AlCl3-GICs and their electrochemical evaluation as a new LIC negative electrode displaying high rates and capacities including LIC full cell characterization

Summary

Introduction

The recent increase in demand for efficient use of clean energy and the reduction of CO2 emissions has expanded requirements for energy storage devices. FeCl3-GICs have shown potential as negative electrode materials with improved rate capability and capacity for LIBs. In addition, low-graphitized carbon is reported to be favorable for better electrochemical performance.[24] The above features are attractive for LIC negative electrodes that require fast kinetics to counter the rapid positive electrode reactions. AlCl3-GICs are projected as new LIC negative electrodes displaying high rates and capacities.

Results

Conclusion