Will power \”Jelly\” – Giant thermopower ion thermoelectric material
Jelly kids love to eat dessert, but robots do not eat, only needs to be charged. Materials Science and Engineering, South University of Technology associate professor Liu Wei book Task Force broke this knowledge – the researchers using the latest original research, made a [123 ] can generate a \”jelly\” . \”Jelly\” The main substance is extracted from animal bones gelatin polymer material, not only as food on the table, is also an important industrial raw materials. Recently, STSP Liu Wei book discussion group and the Massachusetts Institute of Technology Academician Chen Gang Task Force cooperation obtained in the rt ionic breakthrough thermoelectric material , a synergistic effect reduction reaction entropy electrically entropy by diffusion of ions and achieve a high oxide 17 mV / K in the the quasi-solid gel ion giant thermopower effect (Figure 1). Research published in the top journal \”Science\” (Science) in the form of First release.
Ion type thermoelectric conversion material having a high thermoelectric power, thermoelectric power generation in the form of generally divided into two forms: one is the effect of thermal diffusion using ion (Thermodiffusion Effect), namely the use of ion temperature difference directed migration entropy change caused by the density difference to achieve thermal conversion to electricity, which is similar to the Seebeck effect in electron energy carrier; the other is the use of oxidation / reduction potential of the temperature effect (Thermogalvanic effect), i.e., an oxidation / entropy reduction reaction is increased to achieve thermal transition electricity. The theoretical and experimental work from two angles illustrate the negative effects thermogalvanic thermodiffusion effect and the potential of the p-type thermoelectric temperature coefficient of synergy can be thereby generating a high p-type thermoelectric potential (Figure 2).
proposed a new quasi-continuous hot charge / discharge operating mode, the device 100 turns cycle operation to achieve long working for 5 hours. Researchers 25 5 × 5 × 1.8 mm quasi-solid ionic thermoelectric unit assembled in series into a flexible wearable device, the device using the body temperature difference of up to 2.2 V voltage and the maximum output power 5μW (FIG. 3) . The carrier operates to achieve thermal energy ionElectrical conversion to the sensor system and things to achieve the desired electronic device from the power supply provides a choice.
Korea successfully , co-first authors, MIT postdoctoral Qian Xin for the paper an important contribution in theoretical explanation synergies. Liu Wei book and Gang corresponding author for the paper, paper for the South University of Technology first communication unit. Participation of the author\’s thesis also included Professor of Physics STSP Zhang Wenqing , Nankai University professor Wang Wei super , Associate Professor University of Hong KongGrant Pingxian Ping , and 2018 STSP – HKU with culture PhD LI which Kai , 2017 STSP – HIT associated training doctoral Zhu Yongbin , 2018 STSP – Master culture HIT-linking DENG ment , NTUT visiting students Han Zhijia and the like. The work was SUSTech-MIT mechanical engineering education and research center, creating wide support for the project team and Tencent Charity Foundation \”Scientific Exploration Award\” program. Papers link: https: //science.sciencemag.org/content/early/2020/04/29/science.aaz5045/tab-pdf