耐质子N-异环连接的TEMPO催解体,用于长期持久的中性水性有机降氧流电池
Yujie Zhao1, Xu Liu1, Zengrong Wang1
1Frontier Institute of Science and Technology, Interdisciplinary Research Center of Frontier science and technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Key Laboratory of New Conceptual Sensors and Molecular Materials, Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Key Laboratory of Electronic Devices and Material Chemistry, Institute of New Concept Sensors and Molecular Materials, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710054, P.R. China.
研究人员开发了新的TEMPO衍生品,以防止水性有机氧化还原流电池 (AORFB) 的降解. 功能化的TEMPO分子显示出增强的稳定性和显著改善的循环寿命,用于电网规模的能源存储.
科学领域:
- 电化学和材料科学 材料科学
- 可再生能源储能技术可再生能源储能技术
背景情况:
- TEMPO是水性有机氧化还原流电池 (AORFB) 的常见催化剂.
- 为了增加TEMPO溶解度的基替代导致质子诱导的降解和容量衰减.
研究的目的:
- 设计和合成抗质子诱导降解的新型TEMPO衍生物.
- 为了提高AORFBs的阴极体的稳定性和循环性能.
主要方法:
- 通过N-乙胺基桥接和异环接种合成了五种TEMPO衍生物.
- 利用原子二极管时刻纠正的希什菲尔德 (ADCH) 电荷,福井函数和质谱分析.
- 评估了开发的阴极体的电化学性能和循环稳定性.
主要成果:
- 芳香异环功能化改善了电荷再分配,氧化还原动力学和分子稳定性.
- 经过二甲基胺胺胺功能化的TEMPO (DMA-TEMPO) 证明了对质子攻击的增强结构弹性.
- 1M DMA-TEMPO在560个周期中保持了99.98%的容量; 2M DMA-TEMPO在100个周期中保持了97%的容量,比同类产品提高了18倍.
结论:
- 芳香异环接种是一种可行的策略,用于制造抗质子的TEMPO衍生物.
- DMA-TEMPO为AORFB提供了卓越的稳定性和寿命.
- 这种分子设计方法推动了用于电网规模储能的耐用AORFB的开发.
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