High-Power-Density Thermoelectrochemical Cell Based on Ni/NiO Nanostructured Microsphere Electrodes with Alkaline Electrolyte
Denis Artyukhov,
Nikolay Kiselev,
Elena Boychenko,
Aleksandra Asmolova,
Denis Zheleznov,
Ivan Artyukhov,
Igor Burmistrov,
Nikolay Gorshkov
Affiliations
Denis Artyukhov
Department of Power and Electrical Engineering, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia
Nikolay Kiselev
Engineering Center, Plekhanov Russian University of Economics, 36 Stremyanny Pereulok, 117997 Moscow, Russia
Elena Boychenko
Engineering Center, Plekhanov Russian University of Economics, 36 Stremyanny Pereulok, 117997 Moscow, Russia
Aleksandra Asmolova
Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia
Denis Zheleznov
Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia
Ivan Artyukhov
Department of Power and Electrical Engineering, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia
Igor Burmistrov
Engineering Center, Plekhanov Russian University of Economics, 36 Stremyanny Pereulok, 117997 Moscow, Russia
Nikolay Gorshkov
Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia
Effective low-grade waste heat harvesting and its conversion into electric energy by the means of thermoelectrochemical cells (TECs) are a strong theme in the field of renewable energy investigation. Despite considerable scientific research, TECs have not yet been practically applied due to the high cost of electrode materials and low effectiveness levels. A large hypothetical Seebeck coefficient allow the harvest of the low-grade waste heat and, particularly, to use TECs for collecting human body heat. This paper demonstrates the investigation of estimated hypothetical Seebeck coefficient dependency on KOH electrolyte concentration for TECs with hollow nanostructured Ni/NiO microsphere electrodes. It proposes a thermoelectrochemical cell with power density of 1.72 W·m−2 and describes the chemistry of electrodes and near-electrode space. Also, the paper demonstrates a decrease in charge transfer resistance from 3.5 to 0.52 Ω and a decrease in capacitive behavior with increasing electrolyte concentration due to diffusion effects.
