Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction
We present two different ways to fabricate nitrogen-doped graphene (N-graphene) and demonstrate its use as a metal-free catalyst to study the catalytic active center for the oxygen reduction reaction (ORR). N-graphene was produced by annealing of graphene oxide (G-O) under ammonia or by annealing...
| Main Authors: | , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
|
| Online Access: | https://hdl.handle.net/10356/98056 http://hdl.handle.net/10220/13284 |
| _version_ | 1811678538008363008 |
|---|---|
| author | Lai, Linfei Potts, Jeffrey R. Zhan, Da Wang, Liang Poh, Chee Kok Tang, Chunhua Ruoff, Rodney S. Gong, Hao Shen, Zexiang Lin, Jianyi |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Lai, Linfei Potts, Jeffrey R. Zhan, Da Wang, Liang Poh, Chee Kok Tang, Chunhua Ruoff, Rodney S. Gong, Hao Shen, Zexiang Lin, Jianyi |
| author_sort | Lai, Linfei |
| collection | NTU |
| description | We present two different ways to fabricate nitrogen-doped graphene (N-graphene) and demonstrate its
use as a metal-free catalyst to study the catalytic active center for the oxygen reduction reaction (ORR).
N-graphene was produced by annealing of graphene oxide (G-O) under ammonia or by annealing of
a N-containing polymer/reduced graphene oxide (RG-O) composite (polyaniline/RG-O or polypyrrole/
RG-O). The effects of theNprecursors and annealing temperature on the performance of the catalyst were
investigated. The bonding state of the N atom was found to have a significant effect on the selectivity and
catalytic activity for ORR. Annealing of G-O with ammonia preferentially formed graphitic N and
pyridinic N centers, while annealing of polyaniline/RG-O and polypyrrole/RG-O tended to generate
pyridinic and pyrrolic N moieties, respectively.Most importantly, the electrocatalytic activity of the
catalyst was found to be dependent on the graphitic N content which determined the limiting current
density, while the pyridinicNcontent improved the onset potential forORR.However, the totalNcontent
in the graphene-based non-precious metal catalyst does not play an important role in the ORR process. |
| first_indexed | 2024-10-01T02:54:51Z |
| format | Journal Article |
| id | ntu-10356/98056 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:54:51Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/980562020-03-07T12:34:44Z Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction Lai, Linfei Potts, Jeffrey R. Zhan, Da Wang, Liang Poh, Chee Kok Tang, Chunhua Ruoff, Rodney S. Gong, Hao Shen, Zexiang Lin, Jianyi School of Physical and Mathematical Sciences We present two different ways to fabricate nitrogen-doped graphene (N-graphene) and demonstrate its use as a metal-free catalyst to study the catalytic active center for the oxygen reduction reaction (ORR). N-graphene was produced by annealing of graphene oxide (G-O) under ammonia or by annealing of a N-containing polymer/reduced graphene oxide (RG-O) composite (polyaniline/RG-O or polypyrrole/ RG-O). The effects of theNprecursors and annealing temperature on the performance of the catalyst were investigated. The bonding state of the N atom was found to have a significant effect on the selectivity and catalytic activity for ORR. Annealing of G-O with ammonia preferentially formed graphitic N and pyridinic N centers, while annealing of polyaniline/RG-O and polypyrrole/RG-O tended to generate pyridinic and pyrrolic N moieties, respectively.Most importantly, the electrocatalytic activity of the catalyst was found to be dependent on the graphitic N content which determined the limiting current density, while the pyridinicNcontent improved the onset potential forORR.However, the totalNcontent in the graphene-based non-precious metal catalyst does not play an important role in the ORR process. 2013-08-29T08:58:49Z 2019-12-06T19:50:08Z 2013-08-29T08:58:49Z 2019-12-06T19:50:08Z 2012 2012 Journal Article Lai, L., Potts, J. R., Zhan, D., Wang, L., Poh, C. K., Tang, C., Gong, H., Shen, Z., Lin, J.,& Ruoff, R. S. (2012). Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction. Energy & Environmental Science, 5(7), 7936-7942. https://hdl.handle.net/10356/98056 http://hdl.handle.net/10220/13284 10.1039/c2ee21802j en Energy & environmental science |
| spellingShingle | Lai, Linfei Potts, Jeffrey R. Zhan, Da Wang, Liang Poh, Chee Kok Tang, Chunhua Ruoff, Rodney S. Gong, Hao Shen, Zexiang Lin, Jianyi Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction |
| title | Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction |
| title_full | Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction |
| title_fullStr | Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction |
| title_full_unstemmed | Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction |
| title_short | Exploration of the active center structure of nitrogen-doped graphene-based catalysts for oxygen reduction reaction |
| title_sort | exploration of the active center structure of nitrogen doped graphene based catalysts for oxygen reduction reaction |
| url | https://hdl.handle.net/10356/98056 http://hdl.handle.net/10220/13284 |
| work_keys_str_mv | AT lailinfei explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT pottsjeffreyr explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT zhanda explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT wangliang explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT pohcheekok explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT tangchunhua explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT ruoffrodneys explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT gonghao explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT shenzexiang explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction AT linjianyi explorationoftheactivecenterstructureofnitrogendopedgraphenebasedcatalystsforoxygenreductionreaction |