乙二胺调节溶解结构的结合相互作用,用于高温水性离子电容器
Dandan Ouyang1, Liuqian Yang2, Dongxu Chen2
1Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China; Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China.
Journal of colloid and interface science
|March 7, 2024
概括
这项研究开发了一种新型的防电解质,用于使用乙二 (EDA) 的水性离子电容器 (AAIC). 新的电解质能够在极低温度下提供稳定的AAIC性能,克服了储能应用的先前限制.
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:
- 水性离子电容器 (AAIC) 提供具有成本效益和安全的大规模能源存储.
- 极端环境,特别是低温,由于电解质结和低离子导电性,阻碍了AAIC的性能.
研究的目的:
- 为AAICs开发一种稳定,宽温度的电解质.
- 为了克服电流电解质在低温电化学性能方面的局限性.
主要方法:
- 使用0.5M NH4Cl与50%乙二 (EDA) 的抗电解质的配方.
- 使用商业碳电极和开发的抗电解质,组装AAIC.
- 在低温下进行电化学表征和性能测试.
- 谱学调查和分子动力学 (MD) 模拟以了解电解质行为.
主要成果:
- 产生的电解质达到低于-115°C的结点.
- 在低温下观察到优异的离子导电性 (8.58 mS cm-1) 和降低的粘度 (8.16 mPa s).
- AAIC在广泛的温度范围内表现出稳定的运行,具有出色的容量,速率性能和循环稳定性.
结论:
- 乙二胺有效地破坏水中的键,并调节溶解结构,使低温功能成为可能.
- 开发的0.5M NH4Cl (50%-EDA) 电解质为广泛温度AAIC提供了简单有效的策略.
- 这项研究显著推进了AAIC在各种环境条件下的实际应用.
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