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A sustainable approach for scalable production of α-Fe2O3 nanocrystals with 3D interconnected porous architectures on flexible carbon textiles as integrated electrodes for lithium-ion batteries
Journal of Power Sources ( IF 8.1 ) Pub Date : 2018-08-31 , DOI: 10.1016/j.jpowsour.2018.08.057
Wan-Sheng Xiong , Yun Jiang , Yu Xia , Yuyang Qi , Weiwei Sun , Cheng-Long Hu , Rong-Xiang He , Bolei Chen , Yumin Liu , Xing-Zhong Zhao

Herein, we demonstrate a sustainable strategy for scalable production of α-Fe2O3 nanocrystals on flexible carbon textiles via controllable chemical bath deposition process. The assembly of α-Fe2O3 nanocrystals is densely anchored onto the carbon textiles, and the temperature-dependent mass loading and crystal size of α-Fe2O3 are systematically investigated. As an integrated electrode for lithium-ion batteries, the optimized Fe2O3@CTs with ultrathin three-dimensional interconnected porous architectures achieves significantly enhanced cycling performance and rate capability attributing to the improved stability, electronic interconnection, and shortened solid state diffusion pathway for Li+ ions/electrons. After the reactivation of the precursor, the Li-ion batteries based on the recycled Fe2O3@CTs exhibits electrochemical performance with no decay compared to that of the devices based on the fresh products. This sustainable methodology, considering material abundance, eco-efficiency, synthetic approach and scalability, is of crucial importance to both academy and industry for achieving high-performance lithium-ion batteries.



中文翻译:

一种可持续的方法,用于在柔性碳纤维织物上可伸缩生产具有3D互连多孔结构的α -Fe 2 O 3纳米晶体,作为锂离子电池的集成电极

在这里,我们展示了通过可控制的化学浴沉积工艺在柔性碳纤维织物上可规模化生产α -Fe 2 O 3纳米晶体的可持续策略。将α -Fe 2 O 3纳米晶体的组装紧密地锚固在碳纤维织物上,系统地研究了温度随质量变化的载荷和α -Fe 2 O 3的晶体尺寸。经过优化的Fe 2 O 3作为锂离子电池的集成电极用超薄三维连通多孔结构@CTs达到显著增强的循环性能和倍率性能归因于改善的稳定性,电子互连,和缩短的固态扩散路径为栗+离子/电子。在重新活化前体后,与基于新鲜产品的装置相比,基于回收的Fe 2 O 3 @CTs的锂离子电池表现出电化学性能,且无衰减。这种可持续的方法,考虑到材料的丰度,生态效率,合成方法和可扩展性,对于学术界和工业界对于实现高性能锂离子电池都至关重要。

更新日期:2018-08-31
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