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核心外异构的Ni ((OH) ₂@激活Zn-Co-Ni分层的双氧化物电极,用于灵活的全固态同轴纤维形非对称超级电容器

Xiaoshuang Zhou¹, Bing Chen², Wei Wang¹

¹State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Institute of Marine Biobased Materials, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China.

Journal of colloid and interface science

|February 7, 2024

概括

研究人员开发了一种新的光纤超级电容器,使用核心的异构结构用于可穿戴电子产品. 这种先进的电极材料为灵活的电源提供高能量密度和出色的稳定性.

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
纳米技术纳米技术

背景情况:

可穿戴电子产品需要高性能,灵活的储能解决方案.
层状双氧化物 (LDH) 是有前途的电极材料,但其活性点有限,导电性差.
现有的局限性阻碍了LDH在先进能源设备中的实际应用.

研究的目的:

制造一个核心外异构的电极材料,以提高电化学性能.
为可穿戴电子应用开发一个灵活的光纤不对称超级电容器.
研究多金属离子和异构结构对超级电容器性能的影响.

主要方法:

合成Ni(OH) 2@激活Zn-Co-Ni分层双氧化物 (Ni(OH) 2@A-ZnCoNi-LDH) 核心外异构的合成.
一个同轴纤维非对称超级电容器的组装,使用制造的电极和涂有Fe2O3@降解石墨烯氧化物 (rGO) 的CNT薄膜.
电化学表征包括电容,能量密度和循环稳定性测试.

主要成果:

Ni(OH) 2@A-ZnCoNi-LDH电极在1 mA·cm-2.2时表现出2405 mF·cm−2的高电容.
组装的光纤超级电容器在0.75mW·cm-2.2时实现了177.7μWh·cm-2的超高能量密度.
该设备表现出卓越的循环稳定性,在7000个循环后保持95%的电容,并具有高灵活性.

结论:

核心外的异构结构设计有效地提高了基于LDH的电极的电化学性能.
开发的光纤超级电容器显示出作为可穿戴设备的灵活和稳定的能源的巨大潜力.
多金属离子和异构的协同效应对于实现高能量密度和长周期寿命至关重要.

关键词:

所有固态的固体状态.不对称的超级电容器同轴纤维电极同轴纤维电极核心外异构结构的核心外在 LDH 和 LDH 之间.

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