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Binder-Free Electrode based on Electrospun-Fiber for Li Ion Batteries via a Simple Rolling Formation.
Nanoscale Research Letters ( IF 5.418 ) Pub Date : 2020-07-13 , DOI: 10.1186/s11671-020-03369-y
Yuqiong Kang 1 , Changjian Deng 2 , Xinyi Liu 3 , Zheng Liang 4 , Tao Li 3 , Quan Hu 5 , Yun Zhao 1, 3
Affiliation  

With the demand for higher energy density and smaller size lithium-ion batteries (LIBs), the development of high specific capacity active materials and the reduction of the usage of inactive materials are the main directions. Herein, a universal method is developed for binder-free electrodes for excellent stable LIBs by rolling the electrospun membrane directly onto the commercial current collector. The rolling process only makes the fiber web denser without changing the fiber structure, and the fiber web still maintains a porous structure. This strategy significantly improves the structural stability of the membrane compared to the direct carbonized electrospun membrane. Moreover, this method is suitable for a variety of polymerizable adhesive polymers, and each polymer can be composited with different polymers, inorganic salts, etc. The electrode prepared by this method can be stably cycled for more than 2000 cycles at a current density of 2500 mA g−1. This study provides a cost-effective and versatile strategy to design the LIB electrode with high energy density and stability for experimental research and practical application.



中文翻译:

基于电纺纤维的锂离子电池无粘结剂电极,通过简单的轧制形成。

随着对更高能量密度和更小尺寸的锂离子电池(LIB)的需求,高比容量活性材料的发展和减少非活性材料的使用是主要方向。本文中,开发了一种通用方法,该方法通过将静电纺丝膜直接滚动到商用集电器上来获得出色的稳定LIB的无粘合剂电极。轧制过程仅使纤维网致密而不改变纤维结构,并且纤维网仍保持多孔结构。与直接碳化的电纺膜相比,该策略显着提高了膜的结构稳定性。而且,该方法适用于各种可聚合的粘合剂聚合物,并且每种聚合物可以与不同的聚合物,无机盐等复合。-1。这项研究为设计具有高能量密度和稳定性的LIB电极提供了一种经济高效的通用策略,可用于实验研究和实际应用。

更新日期:2020-07-13
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