Interface engineering in the α-Co(OH) 2 /ZIF-67 heterostructure for enhanced oxygen evolution electrocatalysis

Interface engineering in the α-Co(OH) 2 /ZIF-67 heterostructure for enhanced oxygen evolution electrocatalysis

The confined growth of ZIF-67 (ZIF = zeolitic imidazolate framework) on α-Co(OH) 2 nanosheets has been successfully achieved. The interface coupling in α-Co(OH) 2 /ZIF-67 would regulate the electrochemical environment of cobalt at the interface and expose more active sites. As a result, the optimal...

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Veröffentlicht in:New journal of chemistry 2021-06, Vol.45 (23), p.10199-10203
Hauptverfasser: Song, Xue-Zhi, Zhang, Nan, Niu, Zan-Yao, Pan, Yu, Wang, Xiao-Feng, Tan, Zhenquan
Format: Artikel
Sprache:eng
Schlagworte:
Chemical evolution
Cobalt
Heterostructures
Metal-organic frameworks
Zeolites
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Zusammenfassung:The confined growth of ZIF-67 (ZIF = zeolitic imidazolate framework) on α-Co(OH) 2 nanosheets has been successfully achieved. The interface coupling in α-Co(OH) 2 /ZIF-67 would regulate the electrochemical environment of cobalt at the interface and expose more active sites. As a result, the optimal α-Co(OH) 2 /ZIF-67-0.6 catalyst exhibits higher activity ( η 10 = 320 mV), fast kinetics (Tafel slope of 109.3 mV dec −1 ), and excellent durability after continuous operation for 24 h.
ISSN:1144-0546
1369-9261
DOI:10.1039/D1NJ01286J