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具有氧化还原活性的NiS@细菌纤维素纳米纤维复合分离器,具有对离子电池的优越速率能力

Yun Zhang¹, Wei Du¹, Dezhan Ye¹

¹State Key Lab for Hubei New Textile Materials and Advanced Processing Technology, College of Materials Science & Engineering, Wuhan Textile University, 430200 Wuhan, China.

International journal of biological macromolecules

|April 18, 2024

概括

研究人员开发了一种用于离子电池 (LIB) 的新型双层氧化还原活性纤维素分离器. 这种NiS增强的分离器通过促进离子运输和统一的涂层来提高电池容量和稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

分离器在离子电池 (LIB) 中至关重要,可以防止短路,同时实现离子流.
电流分离器增加了质量,减少了电池的整体能量密度.
开发先进的分离器是提高LIB性能的关键.

研究的目的:

为LIBs设计和制造一种新的双层氧化还原活性纤维素分离器.
通过引入硫化 (NiS) 来提高LIBs的电化学性能.
探索功能分离器在推进电池技术中的潜力.

主要方法:

使用细菌纤维素 (BC) 纳米纤维制造双层分离器.
将硫化 (NiS) 和碳纳米管纳入导电层 (NiS@BC/CNTs).
使用新型分离器对LiFePO4//Li半电池进行电化学测试.

主要成果:

NiS@BC分离器在LiFePO4//Li半电池中提高了2C的放电容量到117mAhg-1.
尼斯的氧化还原活性有助于提高性能.
观察到改善的剥离/合同质性和减少的极化.
带有氧化还原活性分离器的电池表现出极好的循环稳定性和速率能力.

结论:

一种新的双层氧化还原活性纤维素分离器已经成功开发出来.
NiS@BC 分离器显著提高了LIB电化学性能.
这项工作提出了开发功能分离器的新策略,以提高LIB属性.

关键词:

细菌纤维素的细菌纤维素.离子电池是一种离子电池.这是一个很好的NIS.有氧化解活性分离器分离器

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