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The Advanced Multi‐functional Electrocatalyst Efficiently Built from Multi‐integrated Sites for Overall Water Splitting and Rechargeable Zinc‐air Battery
Author(s) -
Dai Jianying,
Zhang Wenqing,
Li Tiantian,
Bai Ling,
He Wenya,
Ji Lifei,
Shi Huilan,
Zhang Xin
Publication year - 2019
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201900110
Subject(s) - electrocatalyst , materials science , water splitting , nickel , catalysis , battery (electricity) , oxygen evolution , graphene , carbon fibers , electrolyte , nanomaterials , nanotechnology , zinc , chemical engineering , inorganic chemistry , chemistry , electrode , composite number , metallurgy , electrochemistry , organic chemistry , composite material , power (physics) , physics , photocatalysis , quantum mechanics , engineering
Abstract Exploration of cost‐effective, high‐performance and durable multifunctional electrocatalysts is of significant importance for renewable energy conversion and storage. In this work, a simple strategy is developed to tailor the nickel metal with the collaboration of nitrogen‐doped graphene and single‐walled carbon nanotubes. The resulted nickel catalyst exhibits superior trifunctional activities for oxygen evolution, hydrogen evolution and oxygen reduction reactions in the same electrolyte, even comparable to commercial Pt/C and RuO 2 respectively, which can be attributed to the synergistic advantages between nickel, nitrogen and carbon, mainly including abundant integrated active sites achieved by the irregular charge distribution among C−N and Ni−N coupling centers. Such remarkable effects on trifunctional catalysis elicit the efficient overall water splitting, and endow the assembled zinc‐air battery with a good performance. These highlight the metallic nickel as an advanced multifunctional electrocatalysts with integrated sites developed from the collaboration of two different carbon nanomaterials.