化工学报 ›› 2023, Vol. 74 ›› Issue (9): 3946-3955.DOI: 10.11949/0438-1157.20230474
收稿日期:
2023-05-12
修回日期:
2023-07-24
出版日期:
2023-09-25
发布日期:
2023-11-20
通讯作者:
曾炜
作者简介:
王阳(1995—)男,硕士研究生,wangy1423@163.com
基金资助:
Yang WANG1,2(), Yongqiang DAI2, Wei ZENG2()
Received:
2023-05-12
Revised:
2023-07-24
Online:
2023-09-25
Published:
2023-11-20
Contact:
Wei ZENG
摘要:
目前离子导体热电材料在低品位热源方面的热电转换研究已有一定进展,但仍存在热电转换效率低和可持续性差等问题。研究了2, 5-二羟基苯磺酸盐(HQS)在不同条件下对离子热电水凝胶材料热电性能的影响。利用质子耦合电子转移(PCET)反应协同高扩散系数的质子的Soret效应,结果表明引入HQS可以提升热电性能,其热电势19.16 mV·K-1,离子热电优值0.98,热电转换效率为0.19%。在20 K温差下,可以维持120 mW·m-2的功率输出近2.5 h。
中图分类号:
王阳, 戴永强, 曾炜. 2,5-二羟基苯磺酸增强离子水凝胶材料热电性能的研究[J]. 化工学报, 2023, 74(9): 3946-3955.
Yang WANG, Yongqiang DAI, Wei ZENG. Study of the enhanced thermoelectric properties of ionic hydrogel materials by 2,5-dihydroxybenzenesulfonate[J]. CIESC Journal, 2023, 74(9): 3946-3955.
图5 纯酸离子热电水凝胶与HQS离子热电水凝胶的开路电压建立响应变化
Fig.5 The open circuit voltage establishment response of pure acid ion thermoelectric hydrogel and HQS ion thermoelectric hydrogel
图6 不同浓度HQS离子热电水凝胶及纯酸离子水凝胶的交流阻抗图谱与电导率变化
Fig.6 AC impedance profiles and conductivity changes of HQS ionic thermoelectric hydrogels with different concentrations and pure acid ionic hydrogels
ΔT/K | Vc/V | Ic/mA | Va/V | Ia/mA | |Vc/Va| | |Ic/Ia| |
---|---|---|---|---|---|---|
5 | -0.38 | -3.32 | 0.42 | 3.02 | 0.90 | 1.10 |
10 | -0.44 | -4.52 | 0.45 | 4.22 | 0.98 | 1.07 |
15 | -0.46 | -6.46 | 0.46 | 6.68 | 1.00 | 0.97 |
20 | -0.41 | -7.06 | 0.42 | 7.92 | 0.98 | 0.89 |
25 | -0.37 | -6.63 | 0.39 | 7.63 | 0.95 | 0.87 |
30 | -0.35 | -5.72 | 0.38 | 7.07 | 0.92 | 0.81 |
表1 HQS离子热电水凝胶循环伏安数据变化
Table 1 Cyclic voltammetry data variation of HQS ionic thermoelectric hydrogels
ΔT/K | Vc/V | Ic/mA | Va/V | Ia/mA | |Vc/Va| | |Ic/Ia| |
---|---|---|---|---|---|---|
5 | -0.38 | -3.32 | 0.42 | 3.02 | 0.90 | 1.10 |
10 | -0.44 | -4.52 | 0.45 | 4.22 | 0.98 | 1.07 |
15 | -0.46 | -6.46 | 0.46 | 6.68 | 1.00 | 0.97 |
20 | -0.41 | -7.06 | 0.42 | 7.92 | 0.98 | 0.89 |
25 | -0.37 | -6.63 | 0.39 | 7.63 | 0.95 | 0.87 |
30 | -0.35 | -5.72 | 0.38 | 7.07 | 0.92 | 0.81 |
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