为长寿命低温离子电池平衡四面体和阴离子度
Yongtao Liu1, Meijia Qiu1, Yuxuan Liang1
1Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Department of Physics, College of Physics & Optoelectronic Engineering, Jinan University, Guangdong, 510632, P.R. China.
研究人员通过添加1,3-butanediol (BDO) 来改善用于低温的水性离子电池 (AZIB). 这种BDO增强的电解质增强了Zn阳极稳定性和离子导电性,使得在极端条件下可靠的能量储存成为可能.
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:
- 水性离子电池 (AZIB) 面临着阳极不稳定性和低温性能差的挑战.
- 在低温下限制AZIBs的关键因素包括电解质结和缓慢的Zn2+溶解.
研究的目的:
- 为了提高AZIB的稳定性和低温性能.
- 为了识别和控制控制电解质防和Zn2+溶解的热力学因素.
主要方法:
- 研究了四面体和离子在AZIB性能中的作用.
- 通过调整1,3-butanediol (BDO) 溶剂的摩尔分数来调整电解质特性.
- 在不同温度下对称细胞和全细胞中评估电解质性能.
主要成果:
- 1,3-butanediol (BDO) 显著破坏水的键网络,增强四面体和降低点到-101°C.
- BDO修改了Zn2+溶解,降低了活性水含量并抑制了副作用.
- 优化的电解质在-40°C下使基基基细胞能够在4000多个小时内稳定循环.
- 潘尼德里克德里克德Zn全细胞在广泛的温度范围 (-40°C至60°C) 中表现出功能.
结论:
- 精确调整BDO度有效平衡四面体和阴离体,以提高AZIB性能.
- 这一策略为设计稳定,低温的水性电解质提供了指导方针.
- 扩大了AZIB的运行温度范围,增加了它们对各种应用的潜力.
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