Reversible Lithium-Ion Uptake in Poly(methylmethacrylate) Thin-Film via Lithiation/Delithiation at In Situ Formed Intramolecular Cyclopentanedione

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• 作者：Yan Wang ; Li Zhang ; Liya Zhang ; Fei Zhang ; Ping He ; Honghe Zheng and Haoshen Zhou
• 刊名：Advanced Energy Materials
• 出版年：2016
• 出版时间：November 23, 2016
• 年：2016
• 卷：6
• 期：22
• 全文大小：2833K
• ISSN：1614-6840

文摘

Herein, it is proposed that poly(methylmethacrylate) (PMMA), a widely-used thermoplastic in our daily life, can be used as an abundant, stable, and high-performance anode material for rechargeable lithium-ion batteries through a novel concept of lithium storage mechanism. The specially-designed PMMA thin-film electrode exhibits a high reversible capacity of 343 mA h g⁻¹ at C/25 and maintains a capacity retention of 82.6% of that obtained at C/25 when cycled at 1 C rate. Meanwhile, this pristine PMMA electrode without binder and conductive agents shows a high reversible capacity of 196.8 mA h g⁻¹ after 150 cycles at 0.2 C with a capacity retention of 73.5%. Additionally, PMMA-based binder is found to enhance both the reversible capacity and rate capability of the graphite electrodes. Hence, this new type of organic electrode material may have a great opportunity to be utilized as the active material or rechargeable binder in flexible or transparent thin-film batteries and all-solid batteries. The present work also provides a new way of seeking more proper organic electrode materials which don't contain conjugated structures and atoms with lone pair electrons required in traditional organic electrode materials.