Dissolved Oxygen Seawater Battery with Electrochemical Capacitance

Authors

Hai-Bo XU, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China;Follow
Yong-Hong LU, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
Wei ZHANG, Qingdao Marine Corrosion Institute, China Iron & Steel Research Institute Group, Qingdao 266071, Shandong, China;
Yan-Ting YU, Shandong Academy of Sciences Institue of Oceanographic Instrumentation, Qingdao 266001, Shandong, China;
Chuan-Wei YAN, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016;
Ya-Ping SUN, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
Lian ZHONG, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
Jian-Guo LIU, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016;
Yi ZHENG, Shandong Academy of Sciences Institue of Oceanographic Instrumentation, Qingdao 266001, Shandong, China;
Bing HAN, Qingdao Marine Corrosion Institute, China Iron & Steel Research Institute Group, Qingdao 266071, Shandong, China;
Yong-Liang WANG, Qingdao Xuri Jinyi Machinery Co., Ltd, Qingdao 266109, Shandong, China

Corresponding Author

Hai-Bo XU(xuwangri@163.com)

Abstract

A new concept of seawater battery with electrochemical capacitance (SWB-EC) has been proposed using carbon fibre brush (CFB) as the cathode material, and three testing prototypes have been made accordingly. The discharge performances of the CFB before- and after-oxidation and Mg alloy sacrifice anode were studied by cyclic voltammetry and constant current discharge tests under steady state conditions. Results show that the oxidized CFB exhibits the pseudo-capacitive characteristic and its activity of oxygen reduction reaction (ORR) in stirred seawater highly increases, comparing with the non-oxidized CFB. The open circuit potential of Mg alloy sacrifice anode is -1.74 V, having the advantages of high working potential and uniform dissolution. The consecutive marine discharge test is conducted for prototypes made of the oxidized CFB cathode and Mg alloy sacrifice anode. The preliminary data collected in two months reveals that comparing with the commercial seawater battery—SWB1200, the home-made SWB-EC achieves a higher volume specific power density.

Graphical Abstract

Keywords

dissolved oxygen；oxygen reduction reaction (ORR), carbon fibre, Mg alloy；seawater battery；pseudo-capacitance

DOI Link

https://doi.org/10.61558/2993-074X.2875

Publication Date

2012-02-28

Online Available Date

2011-12-08

Revised Date

2011-12-01

Received Date

2011-11-24

Recommended Citation

Hai-Bo XU, Yong-Hong LU, Wei ZHANG, Yan-Ting YU, Chuan-Wei YAN, Ya-Ping SUN, Lian ZHONG, Jian-Guo LIU, Yi ZHENG, Bing HAN, Yong-Liang WANG. Dissolved Oxygen Seawater Battery with Electrochemical Capacitance[J]. Journal of Electrochemistry, 2012 , 18(1): Article 4.
DOI: 10.61558/2993-074X.2875
Available at: https://jelectrochem.xmu.edu.cn/journal/vol18/iss1/4