Atomically dispersed nickel–nitrogen–sulfur species anchored on porous carbon nanosheets for efficient water oxidation
Ministry of Education · Zhejiang University · +9 more institutions
Abstract
Abstract Developing low-cost electrocatalysts to replace precious Ir-based materials is key for oxygen evolution reaction (OER). Here, we report atomically dispersed nickel coordinated with nitrogen and sulfur species in porous carbon nanosheets as an electrocatalyst exhibiting excellent activity and durability for OER with a low overpotential of 1.51 V at 10 mA cm −2 and a small Tafel slope of 45 mV dec −1 in alkaline media. Such electrocatalyst represents the best among all reported transition metal- and/or heteroatom-doped carbon electrocatalysts and is even superior to benchmark Ir/C. Theoretical and experimental results demonstrate that the well-dispersed molecular S|NiN x species act as active sites for…
Citation impact
- FWCI
- 20.29
- Percentile
- 100%
- References
- 61
Authors
13- YHYang HouCorresponding
Ministry of Education, Zhejiang University, Technische Universität Dresden
- MQMing Qiu
Central China Normal University
- MGMin Gyu Kim
Pohang University of Science and Technology, Pohang Accelerator Laboratory
- PLPan Liu
Tohoku University, Japan Science and Technology Agency, Advanced Institute of Materials Science
- GNGyutae Nam
Ulsan National Institute of Science and Technology
Topics & keywords
- Electrocatalyst
- Overpotential
- Tafel equation
- Oxygen evolution
- Materials science
- Nickel
- Nanosheet
- Graphene
Funding
- GFGraphene FlagshipAwards: CNECT-ICT-604391, 604391
- NNNational Natural Science Foundation of ChinaAwards: 51702284, 21878270, 2018CFB531, LR19B060002
- ZUZhejiang UniversityAward: 112100-193820101/001/022
- SFStartup Foundation for Hundred-Talent Program of Zhejiang UniversityAward: 112100-193820101/001/022
- NSNatural Science Foundation of Zhejiang ProvinceAward: LR19B060002