Cu-Based Thermoelectrochemical Cells for Direct Conversion of Low-Grade Waste Heat into Electricity
Source abstract
Abstract
A hurdle to the commercialization of thermoelectrochemical cells (TECs) based on the redox reaction of hexacyanoferrate (HCF) to convert low-grade waste heat into electricity is the high manufacturing cost resulting from the noble electrode materials like Pt and nanostructured carbon. Herein, we report the successful exploitation of low-cost Cu, which has not been considered ever for the TEC electrode material because of its heavy corrosion in the operating condition. Interestingly, we found that by precisely tuning the pH of the electrolyte-containing HCF to the immunity window, Cu was applicable to a TEC electrode, showing a performance closely equal to Pt and superior to carbon materials with negligible corrosion. Cu-based TECs can achieve a commercially viable module cost of $0.19 W –1, which far exceeds the general cost target for thermoelectric devices (∼$1 W –1 ) and is even more competitive than that for commercial solar power (∼$0.4 W –1 ).
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Advanced battery technologies research · Thermal Expansion and Ionic Conductivity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
School of Mechanical Engineering, Pusan National University, Busan 46241, Republic of Korea
Department of Mechanical Engineering, Incheon National University, Incheon 22012, Republic of Korea
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 08826, Republic of Korea
Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
Funding
National Research Foundation of Korea
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