High-Power-Density Thermoelectrochemical Cell Based on Ni/NiO Nanostructured Microsphere Electrodes with Alkaline Electrolyte.

Autor:	Artyukhov D; Department of Power and Electrical Engineering, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia.; Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia., Kiselev N; Engineering Center, Plekhanov Russian University of Economics, 36 Stremyanny Pereulok, 117997 Moscow, Russia.; Department of Functional Nanosystems and High Temperature Materials, National University of Science and Technology MISIS, 4 Leninskiy Prospect, 117997 Moscow, Russia., Boychenko E; Engineering Center, Plekhanov Russian University of Economics, 36 Stremyanny Pereulok, 117997 Moscow, Russia.; Department of Functional Nanosystems and High Temperature Materials, National University of Science and Technology MISIS, 4 Leninskiy Prospect, 117997 Moscow, Russia.; N.N. Semenov Federal Research Center for Chemical Physics RAS, Kosygina Street, 4, 119991 Moscow, Russia., Asmolova A; Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia., Zheleznov D; Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia., Artyukhov I; Department of Power and Electrical Engineering, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia., Burmistrov I; Engineering Center, Plekhanov Russian University of Economics, 36 Stremyanny Pereulok, 117997 Moscow, Russia.; Department of Functional Nanosystems and High Temperature Materials, National University of Science and Technology MISIS, 4 Leninskiy Prospect, 117997 Moscow, Russia., Gorshkov N; Department of Chemistry and Technology of Materials, Yuri Gagarin State Technical University of Saratov, 77 Polytecnicheskaya Street, 410054 Saratov, Russia.
Jazyk:	angličtina
Zdroj:	Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2023 Aug 09; Vol. 13 (16). Date of Electronic Publication: 2023 Aug 09.
DOI:	10.3390/nano13162290
Abstrakt:	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.
Databáze:	MEDLINE
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