Wijeratne Kosala, Vagin Mikhail, Brooke Robert, Crispin Xavier
Department of Science and Technology , Linköping University , Campus Norrköping , S-60174 , Norrköping , Sweden . Email:
J Mater Chem A Mater. 2017 Oct 7;5(37):19619-19625. doi: 10.1039/c7ta04891b. Epub 2017 Sep 6.
The interest in thermogalvanic cells (TGCs) has grown because it is a candidate technology for harvesting electricity from natural and waste heat. However, the cost of TGCs has a major component due to the use of the platinum electrode. Here, we investigate new alternative electrode material based on conducting polymers, more especially poly(3,4-ethylenedioxythiophene)-tosylate (PEDOT-Tos) together with the ferro/ferricyanide redox electrolyte. The power generated by the PEDOT-Tos based TGCs increases with the conducting polymer thickness/multilayer and reaches values similar to the flat platinum electrode based TGCs. The physics and chemistry behind this exciting result as well as the identification of the limiting phenomena are investigated by various electrochemical techniques. Furthermore, a preliminary study is provided for the stability of the PEDOT-Tos based TGCs.
人们对热电池（TGCs）的兴趣与日俱增，因为它是一种从自然热和废热中获取电能的候选技术。然而，由于使用铂电极，热电池的成本占了很大一部分。在此，我们研究了基于导电聚合物，尤其是聚（3,4 - 乙烯二氧噻吩）- 甲苯磺酸盐（PEDOT - Tos）与亚铁氰化钾/铁氰化钾氧化还原电解质的新型替代电极材料。基于PEDOT - Tos的热电池产生的功率随着导电聚合物厚度/层数的增加而增加，达到了与基于扁平铂电极的热电池相似的值。通过各种电化学技术研究了这一令人兴奋的结果背后的物理和化学原理以及对限制现象的识别。此外，还对基于PEDOT - Tos的热电池的稳定性进行了初步研究。
