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Giant thermopower of ionic gelatin near room temperature

2020; American Association for the Advancement of Science; Volume: 368; Issue: 6495 Linguagem: Inglês

10.1126/science.aaz5045

1095-9203

Cheng-Gong Han, Xin Qian, Qikai Li, Biao Deng, Yongbin Zhu, Zhijia Han, Wenqing Zhang, Weichao Wang, Shien‐Ping Feng, Gang Chen, Weishu Liu,

Thermal Radiation and Cooling Technologies

Improving ionic thermoelectrics Using ions as charge carriers in thermoelectric devices usually requires using either thermal diffusion or redox reactions at two electrodes with different temperatures. Han et al. leveraged both of these strategies to develop a gelatin-based ionic thermoelectric device that uses alkali salts and an iron-based redox couple to generate a large thermopower. This device is capable of generating useful amounts of energy from body heat. Science , this issue p. 1091