Affiliation:
1. College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
2. Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 P. R. China
Abstract
AbstractThermal energy, constituting the majority of the energy lost through various inefficiencies, is abundant and ubiquitous. With thermogalvanic effect, thermocells (TECs) can directly convert thermal energy into electricity without producing vibration, noise or other waste emissions. This work presents a rational design of flexible film electrodes constructed on a ternary composite of Ti3C2Tx MXene (Tx represents surface terminations), polyaniline (PANI) and single‐wall carbon nanotubes for TECs, which exhibit notably enhanced thermoelectrochemical performance compared to the widely adopted noble platinum electrodes. The ternary composite electrodes form a porous layered structure with a large electrochemical‐active surface area. Experiment and simulation results reveal that synergistic effects of Ti3C2Tx and PANI are induced for promoting both mass and charge transport at the electrolyte‐electrode interface, resulting in a TEC with an output power of 13.15 µW cm−2 at the ΔT of 40 K. The TEC also shows a rapid response to the small temperature difference between the human body and the ambient, demonstrating high potential in harvesting low‐grade heat to power small electronics.
Funder
National Natural Science Foundation of China
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
17 articles.
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