The impacts of nitrogen doping on the electrochemical hydrogen storage in a carbon
- 25 January 2021
- journal article
- research article
- Published by Hindawi Limited in International Journal of Energy Research
- Vol. 45 (6), 9326-9339
- https://doi.org/10.1002/er.6463
Abstract
Activated carbon materials doped with different nitrogen contents and nitrogen functional groups were synthesized. Nitrogen doping can improve the electrochemical hydrogen storage activity as well as the hydrophilicity of the carbon materials. Synthesized with the optimal synthesis conditions, the N-doped activate carbon demonstrated the hydrogen storage capacity of 148.4 mAh g(-1) under 100 mA g(-1) rate, and 84.3% capacity retention at a high current density of 1000 mA g(-1). 73.4% hydrogen could be preserved after a 24 hours rest at open potential. The main nitrogen functional groups on this carbon material were found to be pyrrole N, pyridine N oxide and nitro N. The density functional theory (DFT) calculations revealed that the H adsorption energy on pyridine N and pyrrole N was larger than that of pyridine N, while graphite N had no advantage in improving the H adsorption energy of carbon materials.Funding Information
- Fundamental Research Funds for the Central Universities (WUT: 2019‐IB‐003, WUT: 2019‐IB‐004, WUT:2018‐IB‐022)
- National Natural Science Foundation of China (11474226, 21401145, 51676143)
This publication has 72 references indexed in Scilit:
- A Hydrogen‐Insertion Asymmetric SupercapacitorChemistry – A European Journal, 2012
- Advanced hydrogen storage alloys for Ni/MH rechargeable batteriesJournal of Materials Chemistry, 2010
- Enhancement of Hydrogen Insertion into Carbon Interlayers by Surface Catalytic PoisoningThe Journal of Physical Chemistry C, 2010
- Enhancement of Pt and Pt-alloy fuel cell catalyst activity and durability via nitrogen-modified carbon supportsEnergy & Environmental Science, 2010
- Nanoporous H-sorbed carbon as anode of secondary cellJournal of Power Sources, 2009
- Mechanism for electrochemical hydrogen insertion in carbonaceous materialsJournal of Power Sources, 2008
- Ab initiostudy of hydrogen interaction with pure and nitrogen-doped carbon nanotubesPhysical Review B, 2007
- Insights into Hydrogen Atom Adsorption on and the Electrochemical Properties of Nitrogen-Substituted Carbon MaterialsThe Journal of Physical Chemistry B, 2005
- Synthesis of Nitrogen-Rich Carbon Nitride Networks from an Energetic Molecular Azide PrecursorChemistry of Materials, 2000
- Electrochemical Storage of Hydrogen in Nanotube MaterialsElectrochemical and Solid-State Letters, 1999