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Stretchable thermogalvanic hydrogel thermocell with record-high specific output power density enabled by ion-induced crystallization
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2022-05-13 , DOI: 10.1039/d2ee00738j Ding Zhang 1 , Yin Mao 1 , Fei Ye 1 , Qi Li 1 , Peijia Bai 1 , Wen He 1 , Rujun Ma 1
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2022-05-13 , DOI: 10.1039/d2ee00738j Ding Zhang 1 , Yin Mao 1 , Fei Ye 1 , Qi Li 1 , Peijia Bai 1 , Wen He 1 , Rujun Ma 1
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Ionic thermocells have relatively high thermopowers based on the thermogalvanic effect, but their small electricity output is still insufficient for practical applications. We demonstrated a highly ionic conductive, anti-freezing stretchable thermogalvanic hydrogel thermocell (STHTC) with a record-high specific output power density of 1780 μW m−2 K−2, which is ∼3 times the maximum value of previously reported STHTCs. The guanidine ion induces [Fe(CN)6]4− ion crystallization and significantly enhances the thermogalvanic effect. The giant thermopower and stretchability are as high as 4.4 mV K−1 and 540%, respectively. Even at a low operating temperature of −35 °C, the STHTC still exhibits good thermoelectrical performance. As a wearable device, a STHTC array device has been demonstrated to directly light up five green LEDs by simulating harvesting low-grade human thermal energy. By placing the STHTC on the surface of a normal working Central Processing Unit, it proves a feasible strategy for simultaneous thermal management and power generation.
中文翻译：
通过离子诱导结晶实现具有创纪录的高比输出功率密度的可拉伸热电偶水凝胶热电池
离子热电池基于热电偶效应具有较高的热电势，但其较小的电力输出仍不足以满足实际应用。我们展示了一种高离子导电、抗冻可拉伸热电偶水凝胶热电池（STHTC），其比输出功率密度达到创纪录的 1780 μW m -2 K -2，是先前报道的 STHTC 最大值的 3 倍。胍离子诱导[Fe(CN) 6 ] 4-离子结晶并显着增强热电偶效应。巨大的热电势和拉伸性高达4.4 mV K -1和 540%，分别。即使在 -35 °C 的低工作温度下，STHTC 仍表现出良好的热电性能。作为一种可穿戴设备，STHTC 阵列设备已被证明可以通过模拟收集低品位人体热能直接点亮五个绿色 LED。通过将 STHTC 放置在正常工作的中央处理器的表面上，它证明了一种同时进行热管理和发电的可行策略。
更新日期：2022-05-13
中文翻译：
通过离子诱导结晶实现具有创纪录的高比输出功率密度的可拉伸热电偶水凝胶热电池
离子热电池基于热电偶效应具有较高的热电势，但其较小的电力输出仍不足以满足实际应用。我们展示了一种高离子导电、抗冻可拉伸热电偶水凝胶热电池（STHTC），其比输出功率密度达到创纪录的 1780 μW m -2 K -2，是先前报道的 STHTC 最大值的 3 倍。胍离子诱导[Fe(CN) 6 ] 4-离子结晶并显着增强热电偶效应。巨大的热电势和拉伸性高达4.4 mV K -1和 540%，分别。即使在 -35 °C 的低工作温度下，STHTC 仍表现出良好的热电性能。作为一种可穿戴设备，STHTC 阵列设备已被证明可以通过模拟收集低品位人体热能直接点亮五个绿色 LED。通过将 STHTC 放置在正常工作的中央处理器的表面上，它证明了一种同时进行热管理和发电的可行策略。
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