Journal
IONICS
Volume 26, Issue 12, Pages 5889-5896Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-020-03747-7
Keywords
Binder; Stretchable; Adhesive; Si anode; Li-ion battery
Funding
- National Natural Science Foundation of China [51272155]
Ask authors/readers for more resources
Silicon is a promising anode material for lithium-ion batteries because of its high theoretical capacity, but Si particles are faced with huge volume change during charge/discharge process, causing a rapid capacity degradation. Among various methods designed to improve the performance of lithium-ion batteries, employing flexible binders is an effective way to sustain the bending of electrodes and the volume change of Si particles. Herein, we develop a polymer binder composed of carboxymethyl cellulose and polydopamine. This polymer composite binder is instrumental in moderating mechanical fracture of the Si anode during cycling, showing excellent adhesion force (10.8 N) and high stretchability (128.7%). The electrochemical properties (80% capacity retention after 150 cycles with an initial capacity of 2303 mAh g(-1)) of the Si anode show obviously improvement.
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