Electrochemical Conversion of Salinity Gradient Energy by Using Acid Surface Modified Activated Carbon Electrode

被引：0

作者：

Yuan, Xia-Yue ^{[1
]}

Li, Jia-Jun ^{[1
]}

Liu, Xin-Yu ^{[1
]}

Zhou, Juan ^{[1
]}

Feng, Jie ^{[1
]}

Liu, Jun-Hu ^{[1
]}

Ma, Xue-Jing ^{[1
]}

Zhang, Wei-Bin ^{[1
]}

机构：

[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2024年 / 171卷 / 10期

关键词：

salinity gradient energy; electrochemical conversion; activated carbon; surface modification; DOUBLE-LAYER EXPANSION; FUNCTIONAL-GROUPS; SUPERCAPACITOR ELECTRODES; REVERSE ELECTRODIALYSIS; POWER; WATER; PERFORMANCE; EXTRACTION;

D O I：

10.1149/1945-7111/ad80d0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Salinity gradient energy is a sustainable, clean, and renewable ocean energy source. In this work, we used citric acid, phosphoric acid, and nitric acid to modify the surface of activated carbon. Based on the electrochemical capacitive mixing technology, a salinity gradient energy extraction device was constructed using acid-modified activated carbon as cathode and MoS2/MWCNTs as anode. Surface modification by different acids improves the performance of activated carbon electrodes for salt gradient energy conversion in the salt difference battery. The modification effect of nitric acid was the most pronounced, the specific capacitance of the modified electrode reaches 156 F g-1, and the concentration response voltage reaches 170 mV, with the assembled energy extraction system obtaining an energy density of 10.65 J m-2, an enhancement of 53.0% compared to the unmodified activated carbon electrode.

引用

页数：11