Missing-linker metal-organic frameworks for oxygen evolution reaction

Ziqian Xue, Kang Liu, Qinglin Liu, Yinle Li, Manrong Li, Cheng-Yong Su, Naoki Ogiwara, Hirokazu Kobayashi, Hiroshi Kitagawa, Min Liu () and Guangqin Li ()
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Ziqian Xue: Sun Yat-Sen University
Kang Liu: Central South University
Qinglin Liu: Sun Yat-Sen University
Yinle Li: Sun Yat-Sen University
Manrong Li: Sun Yat-Sen University
Cheng-Yong Su: Sun Yat-Sen University
Naoki Ogiwara: Kyoto University
Hirokazu Kobayashi: Kyoto University
Hiroshi Kitagawa: Kyoto University
Min Liu: Central South University
Guangqin Li: Sun Yat-Sen University

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Metal-organic frameworks (MOFs) have been recognized as compelling platforms for the development of miscellaneous applications because of their structural diversity and functional tunability. Here, we propose that the electrocatalytic properties could be well modified by incorporating missing linkers into the MOF. Theoretical calculations suggest the electronic structure of MOFs can be tuned by introducing missing linkers, which improves oxygen evolution reaction (OER) performance of the MOF. Inspired by these aspects, we introduced various missing linkers into a layered-pillared MOF Co2(OH)2(C8H4O4) (termed as CoBDC) to prepare missing-linker MOFs. Transmission electron microscope and synchrotron X-ray measurements confirmed that the missing linkers in the MOF could be introduced and well controlled by our strategy. The self-supported MOF nanoarrays with missing linkers of carboxyferrocene exhibit excellent OER performance with ultralow overpotential of 241 mV at 100 mA cm−2. This work opens a new prospect to develop efficient MOF-based electrocatalysts by introducing missing linkers.

Date: 2019
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DOI: 10.1038/s41467-019-13051-2

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