Unlocking the potential of silicon anodes in lithium-ion batteries: A claw-inspired binder with synergistic interface bonding
Files
(Published version)
Date
2024
Authors
Shen, J.
Zhang, S.
Wang, H.
Wang, R.
Hu, Y.
Mao, Y.
Wang, R.
Zhang, H.
Du, Y.
Fan, Y.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
eScience, 2024; 4(3):100207-1-100207-7
Statement of Responsibility
Jun Shen, Shilin Zhang, Haoli Wang, Renxin Wang, Yingying Hu, Yiyang Mao, Ruilin Wang, Huihui Zhang, Yumeng Du, Yameng Fan, Yingtang Zhou, Zaiping Guo, Baofeng Wang
Conference Name
Abstract
Binders play a crucial role in enhancing the cycling stability of silicon anodes in next-generation Li-ion batteries. However, traditional linear polymer binders have difficulty withstanding the volume expansion of silicon during cycling. Herein, inspired by the fact that animals’ claws can grasp objects firmly, a claw-like taurine-grafted-poly (acrylic acid) binder (Tau-g-PAA) is designed to improve the electrochemical performance of silicon anodes. The synergistic effects of different polar groups (sulfo and carboxyl) in Tau-g-PAA facilitate the formation of multidimensional interactions with silicon nanoparticles and the diffusion of Li ions, thereby greatly improving the stability and rate performance of silicon anodes, which aligns with results from density functional theory (DFT) simulations. As expected, a Tau-g-PAA/Si electrode exhibits excellent cycling performance with a high specific capacity of 1003 mA h g1 at 1 C (1 C ¼ 4200 mA h g1 ) after 300 cycles, and a high rate performance. The design strategy of using polar small molecule-grafted polymers to create claw-like structures could inspire the development of better binders for silicon-based anodes.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2023 The Authors. Published by Elsevier B.V. on behalf of Nankai University. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).