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

doi:10.3390/nano12040692

Improvement of Lithium Storage Performance of Silica Anode by Using Ketjen Black as Functional Conductive Agent

Nanomaterials (Basel). 2022 Feb 19;12(4):692. doi: 10.3390/nano12040692.

Authors

Guobin Hu¹, Xiaohui Sun¹, Huigen Liu¹, Yaya Xu¹, Lei Liao², Donglei Guo², Xianming Liu³, Aimiao Qin¹

Affiliations

¹ 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.
² Guangxi Key Laboratory of Environment Pollution Control Theory and Technology, College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China.
³ Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, China.

Abstract

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.

Keywords: Ketjen Black; electrochemical properties; lithium-ion battery; silica-based anode.

Abstract

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