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Carbon Nanodot Surface Modifications Initiate Highly Efficient, Stable Catalysts for Both Oxygen Evolution and Reduction Reactions
Author(s) -
Liu Juan,
Zhao Shunyan,
Li Chuanxi,
Yang Manman,
Yang Yanmei,
Liu Yang,
Lifshitz Yeshayahu,
Lee ShuitTong,
Kang Zhenhui
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201502039
Subject(s) - nanodot , materials science , catalysis , oxygen evolution , electrocatalyst , black phosphorus , carbon fibers , electrochemistry , platinum , iridium , nanotechnology , oxygen reduction reaction , chemical engineering , inorganic chemistry , chemistry , electrode , organic chemistry , optoelectronics , composite material , composite number , engineering
Efficient, stable, and low‐cost electrocatalysts for the oxygen evolution and reduction reactions (OER and ORR) are essential components of energy conversion. Although much progress has been achieved in the development of platinum‐based electrocatalysts for ORR and iridium‐based electrocatalysts for OER, they are still not yet viable for large‐scale commercialization because of the high cost and scanty supply of the noble metals. Here, it is demonstrated that carbon nanodots surface‐modified with either phosphorus or amidogen can respectively achieve electrocatalytic activity approaching that of the benchmark Pt/C and IrO 2 /C catalysts for ORR and OER. Furthermore, phosphorus (amidogen)‐modified carbon nanodots with attached Au nanoparticles exhibit superior ORR (OER) activity better than commercial Pt/C (IrO 2 /C) catalysts as well as excellent electrochemical stability under visible light.