Hu Guobin, Sun Xiaohui, Liu Huigen, Xu Yaya, Liao Lei, Guo Donglei, Liu Xianming, Qin Aimiao
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.
Guangxi Key Laboratory of Environment Pollution Control Theory and Technology, College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China.
Nanomaterials (Basel). 2022 Feb 19;12(4):692. doi: 10.3390/nano12040692.
In this paper, SiO 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 SiO gel anode were systematically investigated and compared. The results show that KB provides far better cycling and rate performance than SP and AB for SiO anode electrodes, with a reversible specific capacity of 351.4 mA h g at 0.2 A g after 200 cycles and a stable 311.7 mA h g at 1.0 A g after 500 cycles. The enhanced mechanism of the lithium storage performance of SiO-KB anode was also proposed.
在本文中，通过溶胶-凝胶法制备了SiO气凝胶。分别使用科琴黑（KB）、超级P（SP）和乙炔黑（AB）作为导电剂，系统地研究并比较了这三种导电剂的结构和形态对SiO凝胶负极电化学性能的影响。结果表明，对于SiO负极电极，KB比SP和AB具有更好的循环性能和倍率性能，在0.2 A g下循环200次后可逆比容量为351.4 mA h g，在1.0 A g下循环500次后稳定在311.7 mA h g。还提出了SiO-KB负极储锂性能增强的机理。
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