High-performance oxygen reduction and evolution carbon catalysis: From mechanistic studies to device integration

To, John W. F.; Ng, Jia Wei Desmond; Siahrostami, Samira; Koh, Ai Leen; Lee, Yangjin; Chen, Zhihua; Fong, Kara D.; Chen, Shucheng; He, Jiajun; Bae, Won -Gyu; Wilcox, Jennifer; Jeong, Hu Young; Kim, Kwanpyo; Studt, Felix; Nørskov, Jens K.; Jaramillo, Thomas F.; Bao, Zhenan

doi:10.1007/s12274-016-1347-8

Title: High-performance oxygen reduction and evolution carbon catalysis: From mechanistic studies to device integration

Journal Article · Wed Nov 30 00:00:00 EST 2016 · Nano Research

DOI:https://doi.org/10.1007/s12274-016-1347-8· OSTI ID:1349293

To, John W. F. ^[1]; Ng, Jia Wei Desmond ^[2]; Siahrostami, Samira ^[1]; Koh, Ai Leen ^[1]; Lee, Yangjin ^[3]; Chen, Zhihua ^[1]; Fong, Kara D. ^[1]; Chen, Shucheng ^[1]; He, Jiajun ^[4]; Bae, Won -Gyu ^[1]; Wilcox, Jennifer ^[4]; Jeong, Hu Young ^[3]; Kim, Kwanpyo ^[3]; Studt, Felix ^[5]; Nørskov, Jens K. ^[6]; Jaramillo, Thomas F. ^[1]; Bao, Zhenan ^[1]

Stanford Univ., Stanford, CA (United States)
Stanford Univ., Stanford, CA (United States); Institute of Chemical and Engineering Sciences, Jurong Island (Singapore)
Ulsan National Institute of Science and Technology (UNIST), Ulsan (Republic of Korea)
Colorado School of Mines, Golden, CO (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen (Germany); Karlsruhe Institute of Technology, Karlsruhe (Germany)
Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

The development of high-performance and low-cost oxygen reduction and evolution catalysts that can be easily integrated into existing devices is crucial for the wide deployment of energy storage systems that utilize O₂-H₂O chemistries, such as regenerative fuel cells and metal-air batteries. Herein, we report an NH₃-activated N-doped hierarchical carbon (NHC) catalyst synthesized via a scalable route, and demonstrate its device integration. The NHC catalyst exhibited good performance for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), as demonstrated by means of electrochemical studies and evaluation when integrated into the oxygen electrode of a regenerative fuel cell. The activities observed for both the ORR and the OER were comparable to those achieved by state-of-the-art Pt and Ir catalysts in alkaline environments. We have further identified the critical role of carbon defects as active sites for electrochemical activity through density functional theory calculations and high-resolution TEM visualization. As a result, this work highlights the potential of NHC to replace commercial precious metals in regenerative fuel cells and possibly metal-air batteries for cost-effective storage of intermittent renewable energy.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1349293

Journal Information:: Nano Research, Vol. 10, Issue 4; ISSN 1998-0124

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 56 works

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Title: High-performance oxygen reduction and evolution carbon catalysis: From mechanistic studies to device integration

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