Birhanu Bayissa Gicha1, Lemma Teshome Tufa2, Sohyun Kang1, Mahendra Goddati3, Eneyew Tilahun Bekele2, Jaebeom Lee1,3. 1. Department of Chemistry, Chungnam National University, Daejeon 34134, Korea. 2. Department of Applied Chemistry, Adama Science and Technology University, P.O. Box 1888, Adama 1888, Ethiopia. 3. Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Korea.
Abstract
Water splitting driven by renewable energy sources is considered a sustainable way of hydrogen production, an ideal fuel to overcome the energy issue and its environmental challenges. The rational design of electrocatalysts serves as a critical point to achieve efficient water splitting. Layered double hydroxides (LDHs) with two-dimensionally (2D) layered structures hold great potential in electrocatalysis owing to their ease of preparation, structural flexibility, and tenability. However, their application in catalysis is limited due to their low activity attributed to structural stacking with irrational electronic structures, and their sluggish mass transfers. To overcome this challenge, attempts have been made toward adjusting the morphological and electronic structure using appropriate design strategies. This review highlights the current progress made on design strategies of transition metal-based LDHs (TM-LDHs) and their application as novel catalysts for oxygen evolution reactions (OERs) in alkaline conditions. We describe various strategies employed to regulate the electronic structure and composition of TM-LDHs and we discuss their influence on OER performance. Finally, significant challenges and potential research directions are put forward to promote the possible future development of these novel TM-LDHs catalysts.
n class="Chemical">Water splittinpan>g driven by renewable energy sources is n class="Chemical">considered a sustainable way of hydrogen production, an ideal fuel to overcome the energy issue and its environmental challenges. The rational design of electrocatalysts serves as a critical point to achieve efficient water splitting. Layered double hydroxides (LDHs) with two-dimensionally (2D) layered structures hold great potential in electrocatalysis owing to their ease of preparation, structural flexibility, and tenability. However, their application in catalysis is limited due to their low activity attributed to structural stacking with irrational electronic structures, and their sluggish mass transfers. To overcome this challenge, attempts have been made toward adjusting the morphological and electronic structure using appropriate design strategies. This review highlights the current progress made on design strategies of transition metal-based LDHs (TM-LDHs) and their application as novel catalysts for oxygen evolution reactions (OERs) in alkaline conditions. We describe various strategies employed to regulate the electronic structure and composition of TM-LDHs and we discuss their influence on OER performance. Finally, significant challenges and potential research directions are put forward to promote the possible future development of these novel TM-LDHs catalysts.
Entities:
Keywords:
2D nanosheets; material design; oxygen evolution reaction; transition metal layered double hydroxides
Authors: Shuo Zhao; Renxi Jin; Hadi Abroshan; Chenjie Zeng; Hui Zhang; Stephen D House; Eric Gottlieb; Hyung J Kim; Judith C Yang; Rongchao Jin Journal: J Am Chem Soc Date: 2017-01-17 Impact factor: 15.419