Open AccessPolythiophene/Carbon Microsphere Composite as a High-performance Cathode Material for Aluminium-ion Batteries
Author(s) -
Dongqing Kong,
Haodong Fan,
Xiaohui Wang,
Haoyu Hu,
Bin Li,
Dandan Wang,
Shuang Tian,
Xiuli Gao,
Xing Wang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/651/2/022032
Subject(s) - polythiophene , materials science , composite number , cathode , current density , aluminium , chemical engineering , polymerization , carbon fibers , electrochemistry , limiting current , ion , nanotechnology , microsphere , composite material , electrode , conductive polymer , polymer , chemistry , organic chemistry , physics , quantum mechanics , engineering
Due to the high theoretical volume specific capacity and mass specific capacity of aluminum-ion batteries, they can meet the needs of contemporary society for high-performance energy storage devices, and have attracted a lot of research strength. Cathode materials are a key issue limiting the development of aluminum-ion batteries. Herein, polythiophene was prepared on the surface of carbon microspheres by in-situ oxidative polymerization, resulting in polythiophene carbon microsphere composite materials. It exhibits excellent electrochemical performance, as a cathode material for aluminum-ion batteries, in terms of a high specific capacity (106 mAh g −1 at a current density of 1 A g −1 ), good stability (maintaining 58 % of initial capacity after 10000 cycles) and excellent rate performance (90 mAh g −1 at a high current density of 3.5 A g −1 ).