Three-Dimensional Rigidity-Reinforced SiOx Anodes with Stabilized Performance Using an Aqueous Multicomponent Binder Technology

• DOI: 10.1021/acsami.9b08389
• Publication Date: 2019-06-26T13:27:45Z
• Authors: Tianxing Kang; Jiahui Chen; Yan Cui; Zheng Wang; Hanliang Xu; Zhen Ma; Xiaoxi Zuo; Xin Xiao; Junmin Nan
• Keywords: 0103 physical sciences; 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 0104 chemical sciences

Three-dimensional (3D) rigidity-reinforced SiOx anodes are prepared using the aqueous multicomponent binders to stabilize performances of lithium-ion batteries. Considering an elastic skeleton, adhesiveness, electrolyte absorption, etc., four kinds [polyacrylamide (PAM), poly(tetrafluoroethylene) (PTFE), carboxymethyl cellulose, and styrene butadiene rubber (SBR)] selected prepare binders. The with binder PAM/SBR/PTFE (PSP) exhibit a 3D structure, larger adhesive force, moderate adsorption capacity compared other single Specifically, electrochemical PSP663 stabilized, retention 770 mAh g-1 at 500 mA after 300 cycles rate 993 1200 obtained. enhanced attributed good chemical stability PTFE protect particles from corrosion ensure electrode integrity. SBR acts as backbone due strong adhesion force specific three-dimensional structure. rigidity PAM limits excessive expansion well shortens ion migration. These results indicate that anode has promising prospects for practical application, also provide reference solving problem silicon materials.