Layered transition metal dichalcogenide electrochemistry: journey across the periodic table,Chemical Society Reviews

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Layered transition metal dichalcogenide electrochemistry: journey across the periodic table
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2018-06-08 00:00:00 , DOI: 10.1039/c7cs00846e
Xinyi Chia _{1,

2,

3,

4,

5} , Martin Pumera _{6,

7,

8,

9,

10}

Affiliation

Studies on layered transition metal dichalcogenides (TMDs), in particular for Group VIB TMDs like MoS₂ and WS₂, have long reached a crescendo in the realms of electrochemical applications initiated by their remarkable catalytic and electronic properties. One area that garnered considerable attention is the fervent pursuit of layered TMDs as electrocatalysts for hydrogen evolution reaction (HER), driven by global efforts towards reducing carbon footprint and attaining hydrogen economy. This Tutorial Review captures the essence of electrochemistry of different classes of layered TMDs and metal chalcogenides across the period table and showcases their tuneable electrochemical and HER catalytic attributes that are governed by the elemental composition, structure and anisotropy. Of interest to the assiduously studied Group VIB TMDs, we describe the role of elemental constituents and material purity in aspects of surface composition and structure, on their electrochemistry. Across families of layered TMDs in the periodic table, we highlight the apparent trends in their electrochemical and electrocatalytic properties through diligent comparison. Inevitably, these trends vary according to the type of chalcogen or transition metal that constitutes the eventual TMD. Beyond layered TMDs, we discuss the electrochemistry and recent progress in HER electrocatalysis of other layered metal chalcogenides that are overshadowed by the success of Group VIB TMDs. At the pinnacle of the emergent applications of layered TMDs, it is prudent to demystify the intrinsic electrochemical behaviour that originates from the participation of the elemental constitution of transition metal or chalcogen. Moreover, knowledge of the catalytic and electronic properties of the various TMD families and emerging trends across the period or down the group is of paramount importance when introducing or refining their prospective uses. The annotations in this Tutorial Review are envisioned to promote discourse into the catalytic and electrochemical trends of TMDs that is currently absent.

中文翻译：

层状过渡金属二硫化氢电化学：穿过元素周期表的过程

对层状过渡金属二硫化碳（TMD）的研究，特别是对于VIB组TMD（例如MoS ₂和WS _{2）的研究}由于其卓越的催化性能和电子性能，它们早已在电化学应用领域中日渐发展。引起广泛关注的一个领域是在全球为减少碳足迹和实现氢经济所做的努力的推动下，对层状TMD作为氢析出反应（HER）的电催化剂的热切追求。本教程综述涵盖了元素周期表中不同类别的分层TMD和金属硫属元素化物的电化学本质，并展示了其可调节的电化学和HER催化属性，这些属性受元素组成，结构和各向异性的支配。经过认真研究的VIB组TMD令人感兴趣，我们描述了元素成分和材料纯度在表面组成和结构方面的作用，在他们的电化学上。在元素周期表中的整个层状TMD族中，我们通过勤奋的比较突出了它们的电化学和电催化性能的明显趋势。这些趋势不可避免地会根据构成最终TMD的硫族元素或过渡金属的类型而变化。除了分层的TMDs，我们还将讨论VIB组TMDs的成功所掩盖的其他层状金属硫属元素化物的电化学和HER电催化的最新进展。在层状TMD出现的最新应用中，谨慎的做法是对固有的电化学行为进行神秘化处理，这种行为源于过渡金属或硫族元素的元素组成。而且，在介绍或改进其潜在用途时，最重要的是了解各种TMD系列的催化和电子性质以及整个时期或整个集团的新兴趋势。可以预见本教程评论中的注释将促进对目前尚不存在的TMDs的催化和电化学趋势的讨论。

更新日期：2018-06-08

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