近期实验室尹红老师、何斌鸿老师在电池材料领域取得了重大进展！成功设计并合成了一种新型复合材料，将Bi2Se3纳米板与碳布（CC）和还原氧化石墨烯（rGO）结合，显著提升了其在锂离子电池（LIBs）和钠离子电池（SIBs）中的应用前景。实验结果表明，在LIBs中，该复合材料经过120次循环，在0.1 A/g下展现出了令人瞩目的467.5 mAh/g高可逆容量，并且还展现出出色的速率能力。这项研究代表了对Bi2Se3作为阳极材料相关挑战的重要一步解决，这一突破性进展为新型电池材料的发展和应用带来了崭新的可能性。
Bi2Se3 is a promising material for anodes in lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its abundance, easy preparation, and high capacity. However, its practical application is hindered by low conductivity and significant volume variation during cycling, leading to poor rate capability and cycling stability. Herein, a novel composite consisting of Bi2Se3 nanoplates deposited on carbon cloth (CC) and encapsulated by reduced graphene oxide (rGO) has been designed and synthesized. The composite structure combines the advantages of the Bi2Se3 nanoplates, CC substrate, and rGO encapsulation, leading to enhanced electrochemical properties. The physical vapor deposition of Bi2Se3 nanoplates onto CC ensures a high loading of active material, while the rGO encapsulation provides a conductive and stable framework for the composite. This synergistic design allows for improved electron and ion transport, as well as efficient accommodation of the volume changes during cycling. In LIBs, the composite demonstrates a high reversible capacity of 467.5 mAh/g at 0.1 A/g after 120 cycles. Moreover, it displays an outstanding rate capability, delivering a capacity of 398.6 mAh/g at 5.0 A/g. Similarly, in SIBs, the composite maintains a reversible capacity of 375.3 mAh/g at 0.1 A/g over 100 cycles and exhibits a high-rate capacity of 286.3 mAh/g at 5.0 A/g. This work represents a significant step forward inaddressing the challenges associated with Bi2Se3 as an anode material, paving the way for the development of high-performance LIBs and SIBs.
论文题目：3D hierarchical self-supporting Bi2Se3-based anode for high-performance lithium/sodium-ion batteries.
论文作者：Binhong He , Jo˜ao Cunha , Zhaohui Hou , Gangyong Li , Hong Yin.
