Revealing the Formation Mechanism and Optimizing the Synthesis Conditions of Layered Double Hydroxides for the Oxygen Evolution Reaction

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2023
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Angewandte Chemie International Edition. Wiley-Blackwell - STM. 2023, 62(10), e202215728. ISSN 1433-7851. eISSN 1521-3773. Available under: doi: 10.1002/anie.202215728
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Layered double hydroxides (LDHs), whose formation is strongly related to OH- concentration, have attracted significant interest in various fields. However, the effect of the real-time change of OH- concentration on LDHs’ formation has not been fully explored due to the unsuitability of the existing synthesis methods for in situ characterization. Here, the deliberately designed combination of NH3 gas diffusion and in situ pH measurement provides a solution to the above problem. The obtained results revealed the formation mechanism and also guided us to synthesize a library of LDHs with the desired attributes in water at room temperature without using any additives. After evaluating their oxygen evolution reaction performance, we found that FeNi-LDH with a Fe/Ni ratio of 25/75 exhibits one of the best performances so far reported.

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ISO 690CHEN, Zongkun, Xingkun WANG, Zhongkang HAN, Siyuan ZHANG, Simone POLLASTRI, Qiqi FAN, Zhengyao QU, Debalaya SARKER, Christina SCHEU, Helmut CÖLFEN, 2023. Revealing the Formation Mechanism and Optimizing the Synthesis Conditions of Layered Double Hydroxides for the Oxygen Evolution Reaction. In: Angewandte Chemie International Edition. Wiley-Blackwell - STM. 2023, 62(10), e202215728. ISSN 1433-7851. eISSN 1521-3773. Available under: doi: 10.1002/anie.202215728
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@article{Chen2023Revea-66101,
  year={2023},
  doi={10.1002/anie.202215728},
  title={Revealing the Formation Mechanism and Optimizing the Synthesis Conditions of Layered Double Hydroxides for the Oxygen Evolution Reaction},
  number={10},
  volume={62},
  issn={1433-7851},
  journal={Angewandte Chemie International Edition},
  author={Chen, Zongkun and Wang, Xingkun and Han, Zhongkang and Zhang, Siyuan and Pollastri, Simone and Fan, Qiqi and Qu, Zhengyao and Sarker, Debalaya and Scheu, Christina and Cölfen, Helmut},
  note={DFG within the framework of the collaborative research center SFB-1214, project B1. Article Number: e202215728}
}
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DFG within the framework of the collaborative research center SFB-1214, project B1.
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