TY - JOUR
T1 - Quasi-ZIF-67 for Boosted Oxygen Evolution Reaction Catalytic Activity via a Low Temperature Calcination.
AU - Zhu, Rongmei
AU - Ding, Jiawei
AU - Yang, Jinpeng
AU - Pang, Huan
AU - Xu, Qiang
AU - Zhang, Daliang
AU - Braunstein, Pierre
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported from the Program for the National Natural Science Foundation of China (grant nos. NSFC21901221, U1904215, and 21875207), the Natural Science Foundation of Jiangsu Province (grant no. BK20190870), and Lvyangjinfeng Talent Program of Yangzhou. The authors acknowledge the technical support received at the Testing Centre of Yangzhou University.
PY - 2020/5/8
Y1 - 2020/5/8
N2 - Exposing catalytically active metal sites in metal-organic frameworks with maintained porosity could accelerate electron transfer, leading to improved performances in electrochemical energy storage and conversion. Here, we report a series of quasi-ZIF-67 obtained from low temperature calcination of ZIF-67 for electrocatalytic oxygen evolution reaction (OER) and reveal the nanostructural structure via the spherical aberration-corrected transmission electron microscopy. The quasi-ZIF-67-350 not only possesses a large Brunauer-Emmett-Teller surface area of 2038.2 m2·g-1 but also presents an extremely low charge-transfer resistance of 15.0 Ω. In catalyzing the OER process, quasi-ZIF-67-350 displays a low overpotential of 286 mV at 10 mA cm-2 in the electrolyte of 1.0 M KOH. The acquired quasi-ZIF-67 demonstrates a high catalytic activity in OER, and the controlled calcination strategy undoubtedly paves a way in synthesizing low-cost and efficient electrocatalysts.
AB - Exposing catalytically active metal sites in metal-organic frameworks with maintained porosity could accelerate electron transfer, leading to improved performances in electrochemical energy storage and conversion. Here, we report a series of quasi-ZIF-67 obtained from low temperature calcination of ZIF-67 for electrocatalytic oxygen evolution reaction (OER) and reveal the nanostructural structure via the spherical aberration-corrected transmission electron microscopy. The quasi-ZIF-67-350 not only possesses a large Brunauer-Emmett-Teller surface area of 2038.2 m2·g-1 but also presents an extremely low charge-transfer resistance of 15.0 Ω. In catalyzing the OER process, quasi-ZIF-67-350 displays a low overpotential of 286 mV at 10 mA cm-2 in the electrolyte of 1.0 M KOH. The acquired quasi-ZIF-67 demonstrates a high catalytic activity in OER, and the controlled calcination strategy undoubtedly paves a way in synthesizing low-cost and efficient electrocatalysts.
UR - http://hdl.handle.net/10754/662938
UR - https://pubs.acs.org/doi/10.1021/acsami.0c05450
UR - http://www.scopus.com/inward/record.url?scp=85086052314&partnerID=8YFLogxK
U2 - 10.1021/acsami.0c05450
DO - 10.1021/acsami.0c05450
M3 - Article
C2 - 32378882
SN - 1944-8244
VL - 12
SP - 25037
EP - 25041
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
IS - 22
ER -