Atomically dispersed catalysts for oxygen reduction reaction

• Main Author: Zhang, Jincheng
• Other Authors: Liu Bin
• Format: Thesis-Doctor of Philosophy
• Language: English
• Published: Nanyang Technological University 2023
• Subjects: Science::Chemistry
• Online Access: https://hdl.handle.net/10356/164149
• Institution: Nanyang Technological University

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.