一种CoO/NBC复合物的双功能催化剂,用于高性能可充电的柔性空气电池
Quanhu Sun1, Zilin Chen1, Keyi Dong1
1Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
Journal of colloid and interface science
|April 10, 2025
概括
高性能灵活的空气电池 (ZAB) 使用新型催化剂和水凝电解液开发. 这些可充电ZAB为可穿戴电子产品提供了更高的能量密度和稳定性.
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:
- 可充电的灵活空气电池 (ZAB) 由于成本,安全性和能量密度,对可穿戴电子产品具有前景.
- 挑战包括缓慢的空气电极动力学和电解质水分保留能力差.
研究的目的:
- 开发高性能可充电的灵活ZAB.
- 通过先进的催化剂和电解质设计来解决现有ZAB的局限性.
主要方法:
- 合成了一种双功能催化剂:氧化物纳米颗粒在-联合化碳纳米管阵列 (CoO/NBC) 上.
- 开发了一种具有高保湿度的水凝电解质:三糖改性聚烯胺 (三糖/PAAm).
- 使用新型催化剂和电解质制造并测试了柔性ZAB.
主要成果:
- CoO/NBC催化剂在氧气减少和进化反应方面表现出卓越的活性.
- 使用CoO/NBC的ZAB实现了高开通电路电压 (1.44V) 和高能量密度 (920.0Wh kg-1).
- 使用三醇/PAAm电解质的柔性ZAB显示1.39V的开放电路电压,824.8Wh kg-1的能量密度,以及超过400个周期和曲的稳定性.
结论:
- 开发的CoO/NBC催化剂和三糖/PAAm水凝电解液显著提高了可充电的灵活ZAB性能.
- 这些ZAB提供了卓越的电化学性能和机械稳定性,适用于先进的可穿戴电子产品.
相关概念视频
Batteries and Fuel Cells
26.8K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
26.8K
Voltaic/Galvanic Cells
55.3K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
55.3K
Thermal and Photochemical Electrocyclic Reactions: Overview
2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K


