scholarly journals SiOx-based graphite composite anode and efficient binders: practical applications in lithium-ion batteries

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 7801-7807
Author(s):  
Yonglian Xiong ◽  
Houchao Xing ◽  
Yongsheng Fan ◽  
Ying Wei ◽  
Jin Shang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Lithium Ion ◽  
Water Soluble ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Composite Anode ◽  
Half Cell ◽  
Graphite Composite ◽  
Practical Applications ◽  
Styrene Butadiene

The effects of water-soluble binder styrene butadiene rubber (SBR) and poly acrylic acid (PAA) for the 15% SiOx–graphite composite anode in half cell and high voltage pouch cell were investigated.

scholarly journals Functionalized Halloysite Nanotubes–Silica Hybrid for Enhanced Curing and Mechanical Properties of Elastomers

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 883 ◽  
Author(s):  
Jing Lin ◽  
Dechao Hu ◽  
Yuanfang Luo ◽  
Bangchao Zhong ◽  
Yongjun Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Crosslinking Density ◽  
Halloysite Nanotubes ◽  
Styrene Butadiene Rubber ◽  
Positive Contribution ◽  
Butadiene Rubber ◽  
Practical Applications ◽  
Elastomer Composites ◽  
Styrene Butadiene ◽  
Silica Hybrid

Vulcanization and reinforcement are critical factors in governing the ultimate practical applications of elastomer composites. Here we achieved a simultaneous improvement of curing and mechanical properties of elastomer composites by the incorporation of a functionalized halloysite nanotubes–silica hybrid (HS-s-M). Typically, HS-s-M was synthesized by 2-mercapto benzothiazole (M) immobilized on the surface of halloysite nanotubes–silica hybrid (HS). It was found that the HS-s-M uniformly dispersed in the styrene-butadiene rubber (SBR) matrix, offering more opportunity for M molecules to communicate with rubber. In addition, the physical loss of accelerator M from migration and volatilization was efficiently suspended. Therefore, SBR/HS-s-M composites showed a lower curing activation energy and a higher crosslinking density than SBR/HS composites. Moreover, a stronger interfacial interaction between HS-s-M and SBR was formed by the cross-linking reaction, giving a positive contribution to the eventual mechanical properties. The possible vulcanization and reinforcement mechanisms of SBR/HS-s-M composites were also analyzed in detail.

scholarly journals Organic Solvent Free Process to Fabricate High Performance Silicon and Graphite Composite Anode

2018 ◽  
Author(s):  
Haiqing Xiao ◽  
Tianyue Zheng ◽  
Gao Liu
Keyword(s):  
High Performance ◽  
Cycle Performance ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Capacity Fading ◽  
Graphite Composite ◽  
Conductive Additive ◽  
Free Process ◽  
Vinylidene Difluoride ◽  
Styrene Butadiene

Cycling reliability is crucial for Si-based materials due to severe volume change during cycles that results in the fast capacity fading. Though the binder only occupies a very low amount of the total mass of anodes, it is proved to perform a key parameter to improve the cycle performance of Si-based anodes. Because they are eco-friendly and cost saving, water-based binders styrene-butadiene rubber (SBR) and carboxymethyl cellulose (CMC) are regarded as the better binder to substitute Poly (vinylidene difluoride) (PVDF) as the binder for Si-based anode. In this study, the anodes are fabricated by simply mixing the active materials (naso Si, graphite and conductive additive) together and using the mixture of SBR and CMC as a binder. The results showed that the retention capacities of the anodes are more than 440 mAh/g after 400 cycles. It indicates that it is an easy and simple way to make high performance anodes.

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