可曲的近固态水性离子电池在-30°C下运行
Qiuyue Gui1, Yuanyuan Li2, Jinping Liu1
1State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
Journal of colloid and interface science
|February 10, 2024
概括
这项研究介绍了一种新型的耐水性离子电池 (ASIB),使用独特的水凝电解质. 这一创新使得在低温下可靠地储存能量,克服了ASIBs以前的局限性.
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 (ASIB) 由于安全性和的丰富性,对大规模储能充满希望.
- 在ASIB中的水性电解质在零度以下的温度下凝固,降低离子导电性并阻碍性能.
- 开发耐电解质对于扩大ASIB的操作范围和多功能性至关重要.
研究的目的:
- 为水性离子电池引入一种新型的耐水凝电解质.
- 在耐ASIB中研究新阴极 (Na3MnTi(PO4)3) 和阳极 (基于Fe) 对的性能.
- 为了证明ASIB在低温储能应用中的可行性.
主要方法:
- 使用乙烯基醇,聚烯胺和甲酸制备一种防水凝电解质.
- 水凝电解质与Na3MnTi(PO4) 3阴极和Fe基阳极的整合.
- 在零度以下的温度下进行电化学性能测试,包括离子导电量测量和循环稳定性测试.
主要成果:
- 水凝电解质通过抑制水固化,在-40°C下保持良好的离子导电性 (2.5mS cm-1).
- 组装后的ASIB实现了43.6 Wh kg-1的高能量密度,并在-30 °C下保持了64%的容量.
- 灵活的ASIB证明了强大的机械耐用性和高效的设备在-30°C下供电.
结论:
- 开发的水凝电解质使水性离子电池能够耐.
- 乙烯基醇的添加增强了低温离子导电性,并优化了电极性能.
- 这项工作推动了低温ASIB的开发,以实现实际的储能解决方案.
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