Hierarchical 2D yarn-ball like metal-organic framework NiFe(dobpdc) as bifunctional electrocatalyst for efficient overall electrocatalytic water splitting

Lixia Qi, Ya Qiong Su, Zichen Xu, Guanghui Zhang, Kang Liu, Min Liu, Emiel J.M. Hensen, Ryan Yeh Yung Lin (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

42 Citaten (Scopus)

Samenvatting

Metal-organic framework (MOF) is a powerful material for electrocatalytic applications due to its structural diversity and tunability. Herein, the MOF with an extended organic linker, NiFe(dobpdc), is synthesized and investigated for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). NiFe(dobpdc) features a yarn-ball like structure assembly from 2D nanosheets subunits and high electrocatalytic activity properties. Theoretical calculations suggest the dobpdc4- can extract/release charges in the electrocatalytic reaction of (∗ → OH∗) and (OH∗ → O∗), respectively. This bifunctional NiFe(dobpdc) electrocatalyst significantly elevates electrocatalytic performance with a lowest overpotential of 207 mV@10 mA cm-2 for OER and 113 mV@10 mA cm-2 for HER, meanwhile, the ultralow overpotentials needed to achieve the high current density of 100 mA cm-2 for OER (251 mV) and HER (170 mV). This study provides a promising strategy to design MOF electrocatalysts for electrocatalytic applications. 

Originele taal-2Engels
Pagina's (van-tot)22974-22982
Aantal pagina's9
TijdschriftJournal of Materials Chemistry A
Volume8
Nummer van het tijdschrift43
DOI's
StatusGepubliceerd - 21 nov. 2020

Financiering

We acknowledge the support of National Natural Science Foundation of China (No. 21808029), the Fundamental Research Funds for Central Universities (No. DUT19LK22) and State Key Laboratory of Fine Chemicals (KF1818).

FinanciersFinanciernummer
National Natural Science Foundation of China21808029
Fundamental Research Funds for the Central UniversitiesDUT19LK22
Shandong Provincial Key Laboratory of Clean Production of Fine ChemicalsKF1818

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