A high power density, high efficiency hydrogen-chlorine regenerative fuel cell with a low precious metal content catalyst

被引:60
作者
Huskinson, Brian [1 ]
Rugolo, Jason [1 ]
Mondal, Sujit K. [1 ]
Aziz, Michael J. [1 ]
机构
[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
基金
美国国家科学基金会;
关键词
ENERGY-STORAGE SYSTEM; ELECTROCHEMICAL ACCELERATION; PERFORMANCE; EVOLUTION; ELECTRICITY; RUTHENIUM; KINETICS;
D O I
10.1039/c2ee22274d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report the performance of a hydrogen-chlorine electrochemical cell with a chlorine electrode employing a low precious metal content alloy oxide electrocatalyst for the chlorine electrode: (Ru0.09Co0.91)(3)O-4. The cell employs a commercial hydrogen fuel cell electrode and transports protons through a Nafion membrane in both galvanic and electrolytic mode. The peak galvanic power density exceeds 1 Wcm(-2), which is twice previous literature values. The precious metal loading of the chlorine electrode is below 0.15 mg Ru cm(-2). Virtually no activation losses are observed, allowing the cell to run at nearly 0.4 W cm(-2) at 90% voltage efficiency. We report the effects of fluid pressure, electrolyte acid concentration, and hydrogen-side humidification on overall cell performance and efficiency. A comparison of our results to the model of Rugolo et al. [Rugolo et al., J. Electrochem. Soc., 2012, 159, B133] points out directions for further performance enhancement. The performance reported here gives these devices promise for applications in carbon sequestration and grid-scale electrical energy storage.
引用
收藏
页码:8690 / 8698
页数:9
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