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Abstract:
The hyperbranched hydroxyl-rich water-soluble β-cyclodextrin polymer (β-CDp) is synthesized by the reaction between β-cyclodextrin and 1, 4-butanediol diglycidyl ether with a facile and environmentally friendly method, which is systematically confirmed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric (TG). A water-soluble PAAS-β-CDp-PAA binder is prepared by the esterification reaction between partially neutralized sodium polyacrylate (PAAS), β-CDp, and polyacrylic acid (PAA). Moreover, the optimized PAAS6-β-CDp1-PAA3 binder, with a three-dimensional (3D) cross-linked network structure constructed by covalent bonds, hydrogen bonds, and electrostatic interactions, displays a stronger adhesion between the active material and the current collector, effectively promotes the diffusion of Li+, and maintains the structural integrity of the electrode during charge-discharge cycling. Thus Si/PAAS6-β-CDp1-PAA3 electrode exhibits a higher initial discharge specific capacity of 3869 mAh g−1 with a columbic efficiency of 89.79% at 200 mA g−1, and a discharge specific capacity of 2513 mAh g−1 with a capacity retention rate of 71.10% is achieved after 100 cycles. © 2022
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Journal of Alloys and Compounds
ISSN: 0925-8388
Year: 2023
Volume: 932
5 . 8
JCR@2023
5 . 8 0 0
JCR@2023
ESI HC Threshold:49
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 8
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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