没有阳极的水性离子电池
Cheng Lu1, Fangfang Zhao1, Bowen Tao2
1Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
Small (Weinheim an der Bergstrasse, Germany)
|May 20, 2024
概括
无阳极水性离子电池通过使用Al2TiO5作为源来克服安全问题. 这一创新使得高容量和长周期寿命成为可能,为更安全的能源存储铺平了道路.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AAIBs) 提供安全性和成本优势,但受到Al阳极被动化 (Al2O3膜) 和电解质分解的影响.
- 的进化是传统AAIB的一个重大挑战,限制了它们的实际应用.
研究的目的:
- 提出和演示一种新的无阳极AAIB概念,以规避传统Al阳极的局限性.
- 利用Al2TiO5作为阴极添加剂来提供离子并减轻与阳极相关的问题.
主要方法:
- 使用Al2TiO5作为现场源开发无阳极AAIB配置.
- 在现场生成的Al-Cu合金阳极与聚氨阴极的配对.
- 电化学表征包括循环性能,容量保留和功率密度评估.
主要成果:
- 无阳极的AAIB实现了175 mAh g-1的高初始放电容量和大约410 Wh L-1的功率密度.
- 电池显示出超长的周期寿命,在4000个周期后保持约60%的容量.
- 在现场形成的Al-Cu合金阳极中观察到可逆的电化学特性.
结论:
- 拟议的无阳极AAIB设计成功克服了与水性电解质中的Al阳极相关的挑战.
- 这项概念验证研究强调了无阳极配置的潜力,用于开发先进的水性离子电池.
- 这些发现为未来研究高性能,安全和可持续的基于的储能系统提供了基础.
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