Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154125
Title: Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting
Authors: Tang, Yu-Jia
Zheng, Han
Wang, Yu
Zhang, Wang
Zhou, Kun
Keywords: Engineering::Mechanical engineering
Issue Date: 2021
Source: Tang, Y., Zheng, H., Wang, Y., Zhang, W. & Zhou, K. (2021). Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting. Advanced Functional Materials, 31(31), 2102648-. https://dx.doi.org/10.1002/adfm.202102648
Project: 1521622101008 
Journal: Advanced Functional Materials 
Abstract: The conventional thermal transformation of metal–organic frameworks (MOFs) for electrocatalysis requires high temperature, an inert atmosphere, and long duration that result in severe aggregation of metal particles and non-uniform porous structures. Herein, a precise and inexpensive laser-induced annealing (LIA) strategy, which eliminates particle aggregation and rapidly generates uniform structures with a high exposure of active sites, is introduced to carbonize MOFs on conductive substrates under ambient conditions within a few minutes. By systematically considering 8 substrates and 12 MOFs, a series of LIA-MOF/substrate devices with controllable sizes and good flexibility are successfully obtained. These LIA-MOF/substrate devices can directly serve as working electrodes. Remarkably, LIA-MIL-101(Fe) on nickel foam exhibits an ultralow overpotential of 225 mV at a current density of 50 mA cm−2 and excellent stability over 50 h for facilitating the oxygen evolution reaction, outperforming most recently reported transition-metal-based electrocatalysts and commercial RuO2. Physical characterizations and theoretical calculations evidence that the high activity of LIA-MIL-101(Fe) arises from the favorable adsorption of intermediates at its Ni-doped Fe3O4 overlayer that is formed during the laser treatment. Moreover, the LIA-MOF/substrate devices are assembled for overall water splitting. The proposed LIA strategy demonstrates a cost-effective route for manufacturing scalable energy storage and conversion devices.
URI: https://hdl.handle.net/10356/154125
ISSN: 1616-301X
DOI: 10.1002/adfm.202102648
Rights: This is the peer reviewed version of the following article: Tang, Y., Zheng, H., Wang, Y., Zhang, W. & Zhou, K. (2021). Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting. Advanced Functional Materials, 31(31), 2102648-, which has been published in final form at https://doi.org/10.1002/adfm.202102648. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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