Details

Autor(en) / Beteiligte

• Xue, Ziqian
• Liu, Kang
• Liu, Qinglin
• Li, Yinle
• Li, Manrong
• Su, Cheng-Yong
• Ogiwara, Naoki
• Kobayashi, Hirokazu
• Kitagawa, Hiroshi
• Liu, Min
• Li, Guangqin

Titel

Missing-linker metal-organic frameworks for oxygen evolution reaction

Ist Teil von

• Nature communications, 2019-11, Vol.10 (1), p.5048-8, Article 5048

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 Co 2 (OH) 2 (C 8 H 4 O 4 ) (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. While water splitting electrocatalysis provides a means to store electrical energy as fuel, the water oxidation catalysts typically show low performances. Here, authors employ metal-organic frameworks with missing-linkers as highly active oxygen evolution electrocatalysts.