3D π-d 结合协调聚合物 实现超长寿命的离子储存
Shuo Feng1, Mochun Zhang1, Yanxia Ma1
1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China.
Advanced materials (Deerfield Beach, Fla.)
|November 1, 2023
概括
研究人员开发了一种用于储能的新型3D联协调聚合物 (CCP). 这种材料证明了多价离子电池的特殊循环寿命,为先进的储能解决方案铺平了道路.
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:
- π-d联协调聚合物 (CCP) 显示出由于高效的电荷转移,对能量储存有希望.
- 现有的储能CPT主要是1D或2D,报告的3D结构有限.
- 开发用于多价离子存储的3DCP面临重大结构性挑战.
研究的目的:
- 综合和描述一种用于多价离子储能的新型3D CCP.
- 研究新材料的电化学性能和储存机制.
- 探索3D CCP在长寿命可充电电池中的潜力.
主要方法:
- 基于三烯-甲基酸盐的3D CCP (Mn-HHTP) 的合成,使用六氧三烯 (HHTP) 连接体和Mn2+离子.
- 对多价值Mg2+离子储存的电化学测试,包括循环寿命分析.
- 实验性表征和理论计算以确定电活性中心.
主要成果:
- 成功合成了一种3D联协调聚合物,Mn-HHTP.
- 在0.5A g-1下实现了超过4000个周期的特殊周期寿命,用于Mg2+离子储存.
- 确定了HHTP配体上的半基,作为Mg2+储存的活性位点.
结论:
- 新的3D CCP,Mn-HHTP,与现有材料相比,在多价离子存储方面表现出卓越的性能.
- 该研究强调了3D CCP在开发长寿命可充电离子电池方面的潜力.
- 这项工作为为下一代储能应用设计先进的3DCP打开了新的道路.
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