Correlation of hydrogen capacity in carbon material with the parameters of electrosorption |
| |
Authors: | Grzegorz Lota Krzysztof Fic Krzysztof Jurewicz Elzbieta Frackowiak |
| |
Institution: | 1.Institute of Chemistry and Technical Electrochemistry,Poznan University of Technology,Poznan,Poland |
| |
Abstract: | Electrochemical storage of hydrogen in activated carbon material has been investigated using different parameters of cathodic
polarization. It has been proven that application of short galvanostatic pulses could be efficient for hydrogen storage in
microporous carbon material. Charging current loads from 50 mA g−1 to 32 A g−1 have been used showing correlation between hydrogen capacity, time of charging and electrical efficiency. The anodic charge
equivalent to electrooxidation of 1.0 wt% of hydrogen can be already reached after 90 s of cathodic polarization. Temperature
effect has been also evaluated and a gradual increase of hydrogen capacity with a better pronounced oxidation plateau was
obtained at higher temperatures. Reversible electrosorption of hydrogen is a useful reaction in supercapacitor performance
and it might have a potential application for a negative electrode of supercapacitor as well as reversibly operating electrode
in the secondary cell.
![MediaObjects/11532_2010_130_Fig1_HTML.jpg](/content/42601H4HJ28WR336/MediaObjects/11532_2010_130_Fig1_HTML.jpg) |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |