Improvement of Lithium Storage Performance of Silica Anode by Using Ketjen Black as Functional Conductive Agent
Guobin Hu,
Xiaohui Sun,
Huigen Liu,
Yaya Xu,
Lei Liao,
Donglei Guo,
Xianming Liu,
Aimiao Qin
Affiliations
Guobin Hu
Key Lab New Processing Technology for Nonferrous Metal and Materials Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
Xiaohui Sun
Key Lab New Processing Technology for Nonferrous Metal and Materials Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
Huigen Liu
Key Lab New Processing Technology for Nonferrous Metal and Materials Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
Yaya Xu
Key Lab New Processing Technology for Nonferrous Metal and Materials Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
Lei Liao
Guangxi Key Laboratory of Environment Pollution Control Theory and Technology, College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
Donglei Guo
Guangxi Key Laboratory of Environment Pollution Control Theory and Technology, College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
Xianming Liu
Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, China
Aimiao Qin
Key Lab New Processing Technology for Nonferrous Metal and Materials Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
In this paper, SiO2 aerogels were prepared by a sol–gel method. Using Ketjen Black (KB), Super P (SP) and Acetylene Black (AB) as a conductive agent, respectively, the effects of the structure and morphology of the three conductive agents on the electrochemical performance of SiO2 gel anode were systematically investigated and compared. The results show that KB provides far better cycling and rate performance than SP and AB for SiO2 anode electrodes, with a reversible specific capacity of 351.4 mA h g−1 at 0.2 A g−1 after 200 cycles and a stable 311.7 mA h g−1 at 1.0 A g−1 after 500 cycles. The enhanced mechanism of the lithium storage performance of SiO2-KB anode was also proposed.
