Graduate School of Pure & Applied Science, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-7571, Japan.
Dalton Trans. 2019 Feb 5;48(6):1964-1968. doi: 10.1039/c8dt04338h.
Recently, it was reported that a thermocell can convert temperature into electrical energy by using the difference in the thermal coefficient (α ≡ dV/dT) of the redox potential (V) between the cathode and anode materials. Here, we systematically investigated α of NaxCo1-zMnz[Fe(CN)6]y (Co1-zMnz-PBA) against Mn concentration (z). The z-dependence of α is interpreted in terms of the 3d-electron configuration entropy (ΔS3d) of the redox site. Utilization of S3d is a strategy effective for the design of high-|α| materials for energy harvesting thermocells.
最近有报道称，热电池可以利用阴极和阳极材料之间氧化还原电势 (V) 的热系数 (α≡dV/dT) 的差异将温度转化为电能。在这里，我们系统地研究了 NaxCo1-zMnz[Fe(CN)6]y (Co1-zMnz-PBA) 的α与锰浓度 (z) 的关系。α 的 z 依赖性可以用氧化还原位点的 3d 电子组态熵 (ΔS3d) 来解释。利用 S3d 是设计用于能量收集热电池的高 |α| 材料的有效策略。
