All-Climate Aluminum-Ion Batteries Based on Binder-Free MOF-Derived FeS2@C/CNT Cathode

Nano-Micro Letters

Linlin Li¹  Shengjie Peng¹  Hongjiao Huang¹  Deshuang Yu¹  Yuxiang Hu²  Lianzhou Wang²  Xinyi Wang²  Xiaobo Zhu²  Han Hu³ 

[1] Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics;Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland;State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, University of Petroleum (East China);

关键词: Aluminum-ion battery;    All-climate battery;    Iron sulfide;    Binder-free;    High rate capacity;   

DOI  :  10.1007/s40820-021-00682-8

来源: DOAJ

【 摘 要 】

Abstract Aluminum-ion batteries (AIBs) are promising next-generation batteries systems because of their features of low cost and abundant aluminum resource. However, the inferior rate capacity and poor all-climate performance, especially the decayed capacity under low temperature, are still critical challenges toward high-specific-capacity AIBs. Herein, we report a binder-free and freestanding metal–organic framework-derived FeS2@C/carbon nanotube (FeS2@C/CNT) as a novel all-climate cathode in AIBs working under a wide temperature window between −25 and 50 °C with exceptional flexibility. The resultant cathode not only drastically suppresses the side reaction and volumetric expansion with high capacity and long-term stability but also greatly enhances the kinetic process in AIBs with remarkable rate capacity (above 151 mAh g−1 at 2 A g−1) at room temperature. More importantly, to break the bottleneck of the inherently low capacity in graphitic material-based all-climate AIBs, the new hierarchical conductive composite FeS2@C/CNT highly promotes the all-climate performance and delivers as high as 117 mAh g−1 capacity even under −25 °C. The well-designed metal sulfide electrode with remarkable performance paves a new way toward all-climate and flexible AIBs.

【 授权许可】

Unknown