Atomically dispersed nickel–nitrogen–sulfur species anchored on porous carbon nanosheets for efficient water oxidation

Hou Y, Qiu M, Kim MG, Liu P, Nam G, Zhang T, Zhuang X, Yang B, Cho J, Chen M, Yuan C, Lei L, Feng X (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 10

Article Number: 1392

Journal Issue: 1

DOI: 10.1038/s41467-019-09394-5

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 catalyzing OER. The atomic structure of S|NiN x centers in the carbon matrix is clearly disclosed by aberration-corrected scanning transmission electron microscopy and synchrotron radiation X-ray absorption spectroscopy together with computational simulations. An integrated photoanode of nanocarbon on a Fe 2 O 3 nanosheet array enables highly active solar-driven oxygen production.

Involved external institutions

Zhejiang University CN China (CN) Central China Normal University (CCNU) / Huazhong Normal University / 华中师范大学 CN China (CN) Pohang Accelerator Laboratory (PAL) / 포항가속기연구소로고 KR Korea, Republic of (KR) Tohoku University JP Japan (JP) Ulsan National Institute of Science and Technology (UNIST) / 울산과학기술원 KR Korea, Republic of (KR) Technische Universität Dresden DE Germany (DE) Case Western Reserve University US United States (USA) (US)

How to cite

APA:

Hou, Y., Qiu, M., Kim, M.G., Liu, P., Nam, G., Zhang, T.,... Feng, X. (2019). Atomically dispersed nickel–nitrogen–sulfur species anchored on porous carbon nanosheets for efficient water oxidation. Nature Communications, 10(1). https://doi.org/10.1038/s41467-019-09394-5

MLA:

Hou, Yang, et al. "Atomically dispersed nickel–nitrogen–sulfur species anchored on porous carbon nanosheets for efficient water oxidation." Nature Communications 10.1 (2019).

BibTeX: Download