Atomically dispersed catalysts for oxygen reduction reaction
Single atom catalysts (SACs) are promising candidates to replace Pt as the oxygen reduction reaction (ORR) catalysts. However, the selectivity, activity and stability of SACs are not yet satisfactory now. Modulating the coordination environment of SACs is an efficient strategy to promote the perf...
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| Format: | Thesis-Doctor of Philosophy |
| Language: | English |
| Published: |
Nanyang Technological University
2023
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| Online Access: | https://hdl.handle.net/10356/164149 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Single atom catalysts (SACs) are promising candidates to replace Pt as the oxygen
reduction reaction (ORR) catalysts. However, the selectivity, activity and stability of
SACs are not yet satisfactory now. Modulating the coordination environment of
SACs is an efficient strategy to promote the performance of SACs. In the first work,
guided by the theoretical calculation, a hierarchical and freestanding Co single atom
electrode was design and showed excellent performance for H2O2 production in a
practical device. In the second work, sulfur was introduced into the second
coordination sphere of Fe single atom and a direct methanol fuel cell (DMFC) was
demonstrated. In the third work, Mn was chosen as the metal center to prevent Fenton
reaction occurred in Fe single atom, and sulfur doping was further utilized to boost
the activity, and Zn-air battery was also estabilished. |
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