The synergistic effect of Hf-O-Ru bonds and oxygen vacancies in Ru/HfO2 for enhanced hydrogen evolution
Qingdao University of Science and Technology · Ulsan National Institute of Science and Technology · +3 more institutions
Abstract
Abstract Ru nanoparticles have been demonstrated to be highly active electrocatalysts for the hydrogen evolution reaction (HER). At present, most of Ru nanoparticles-based HER electrocatalysts with high activity are supported by heteroatom-doped carbon substrates. Few metal oxides with large band gap (more than 5 eV) as the substrates of Ru nanoparticles are employed for the HER. By using large band gap metal oxides substrates, we can distinguish the contribution of Ru nanoparticles from the substrates. Here, a highly efficient Ru/HfO 2 composite is developed by tuning numbers of Ru-O-Hf bonds and oxygen vacancies, resulting in a 20-fold enhancement in mass activity over commercial Pt/C in an alkaline medium.…
Citation impact
- FWCI
- 14.55
- Percentile
- 100%
- References
- 48
Authors
8- GLGuangkai LiCorresponding
Qingdao University of Science and Technology
- HJHaeseong Jang
Ulsan National Institute of Science and Technology
- SLShangguo Liu
Qingdao University of Science and Technology
- ZLZijian Li
City University of Hong Kong
- MGMin Gyu Kim
Pohang University of Science and Technology, Pohang Accelerator Laboratory
Topics & keywords
- Oxygen
- Oxygen evolution
- Hydrogen
- Hydrogen bond
- Chemical physics
- Materials science
- Ruthenium
- Chemistry
- Affordable and clean energy
Funding
- NNNational Natural Science Foundation of ChinaAwards: 190002, 22102079
- UNUlsan National Institute of Science and TechnologyAward: 1.190002.01
- NSNatural Science Foundation of Shandong ProvinceAwards: ts201712045, ZR2018BB008, ZR2021YQ10
- QUQingdao University of Science and TechnologyAwards: 010029081, 010029075, 1.190002.01