In Situ Fabrication of Porous CoxP Hierarchical Nanostructures on Carbon Fiber Cloth with Exceptional Performance for Sodium Storage

被引:49
作者
Yuan, Guobao [1 ]
Liu, Dapeng [1 ]
Feng, Xilan [1 ]
Shao, Mingzhe [1 ]
Hao, Zhimin [1 ]
Sun, Tao [2 ]
Yu, Haohan [1 ]
Ge, Huaiyun [1 ]
Zuo, Xintao [1 ]
Zhang, Yu [1 ,3 ]
机构
[1] Beihang Univ, Sch Chem, Minist Educ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Beijing 100191, Peoples R China
[2] Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 637371, Singapore
[3] Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Beijing 100191, Peoples R China
基金
中国国家自然科学基金;
关键词
carbon fiber cloth; cobalt phosphides; mixed-valence; sodium-ion batteries; ultralong cycling life; ION BATTERIES; LITHIUM; ANODE; GRAPHENE; PHOSPHIDES; CATHODE;
D O I
10.1002/adma.202108985
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Superior high-rate performance and ultralong cycling life have been constantly pursued for rechargeable sodium-ion batteries (SIBs). In this work, a facile strategy is employed to successfully synthesize porous CoxP hierarchical nanostructures supported on a flexible carbon fiber cloth (CoxP@CFC), constructing a robust architecture of ordered nanoarrays. Via such a unique design, porous and bare structures can thoroughly expose the electroactive surfaces to the electrolyte, which is favorable for ultrafast sodium-ion storage. In addition, the CFC provides an interconnected 3D conductive network to ensure firm electrical connection of the electrode materials. Besides the inherent flexibility of the CFC, the integration of the hierarchical structures of CoxP with the CFC, as well as the strong synergistic effect between them, effectively help to buffer the mechanical stress caused by repeated sodiation/desodiation, thereby guaranteeing the structural integrity of the overall electrode. Consequently, CoxP@CFC as an anode shows a record-high capacity of 279 mAh g(-1) at 5.0 A g(-1) with almost no capacity attenuation after 9000 cycles.
引用
收藏
页数:8
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