Deciphering the Electrocatalytic Activity of Nitrogen-Doped Carbon Embedded with Cobalt Nanoparticles and the Reaction Mechanism of Triiodide Reduction in Dye-Sensitized Solar Cells
- Title
- Deciphering the Electrocatalytic Activity of Nitrogen-Doped Carbon Embedded with Cobalt Nanoparticles and the Reaction Mechanism of Triiodide Reduction in Dye-Sensitized Solar Cells
- Author
- 이상욱
- Keywords
- COUNTER ELECTRODE MATERIALS; INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; METAL-ORGANIC FRAMEWORK; AUGMENTED-WAVE METHOD; MESOPOROUS CARBON; GRAPHITIC CARBON; PLATINUM-ELECTRODE; HIGH-EFFICIENCY; BASIS-SET
- Issue Date
- 2017-12
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, v. 121, no. 49, page. 27332-27343
- Abstract
- The electrocatalytic activity of carbon materials for triiodide (I-3(-)) reduction has spurred the development of low-cost electrocatalysts as an alternative to platinum in dye-sensitized solar cells. While many catalytic aspects of nitrogen-doped carbons have been unveiled in recent years, not all underlying factors that dictate their electrocatalytic activity have been fully considered; the current understanding of the electrocatalytic activity of nitrogen-doped carbons is limited. In addition, the synergistic effect of metal nanoparticles embedded in nitrogen-doped carbon, which was recently demonstrated as a facile way to boost the electrocatalytic activity of carbon, remains elusive. This work sheds light on these unknown aspects of carbon's electrocatalytic activity by carrying out a systematic investigation of nitrogen-doped carbon with incorporated cobalt nanoparticles. Furthermore, the generally accepted mechanism of the I-3(-) reduction reaction (IRR) is re-evaluated in this work with the aid of density functional theory calculations and in-depth electrochemical analysis. A new insight into this mechanism, which suggests that there is another possible reaction pathway available for the IRR on carbon, is provided.
- URI
- https://pubs.acs.org/doi/10.1021/acs.jpcc.7b09758https://repository.hanyang.ac.kr/handle/20.500.11754/116683
- ISSN
- 1932-7447
- DOI
- 10.1021/acs.jpcc.7b09758
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML