Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 830, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.154575
Keywords
Dispersants; Graphene; Lithium-ion batteries; Anodes; Silicon dioxide
Categories
Funding
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [NSFC51621001]
- Natural Science Foundation of Guangdong Province of China [2016A030312011]
- Guangzhou Science and Technology project [201802020029]
- GDAS' Project of Science and Technology Development [2019GDASYL-0501008]
Ask authors/readers for more resources
Through a combination of mechanical agitation, ultrasonic dispersion, and modification by different dispersants, including polyvinyl pyrrolidone, sodium lignin sulfonate, and carboxymethylcellulose sodium (CMC), a graphene conductive slurry for lithium-ion batteries anode is prepared. These dispersants can inhibit the agglomeration of graphene and help to build the conductive network when graphene slurry used as a conductive agent for lithium-ion batteries. The SiOx/graphene-CMC electrode shows an excellent electrochemical performance with a first charge/discharge capacity of 1273.8/1723.7 mAh/g and a Coulomb efficiency of 73.9% at a constant current of 100 mA/g. The capacity retention rate of the lithium-ion battery is 84% (1070.2 mAh/g) after 100 cycles under current of 200 mA/g. The results indicate that the dispersant treatment provides a simple mass production method to disperse graphene stably, and the graphene conductive slurry can employ for high-performance SiOx anodes conductive agent. (c) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available