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Fundament and Application of Graphdiyne in Electrochemical Energy.
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2020-02-05 , DOI: 10.1021/acs.accounts.9b00558
Yuncheng Du 1 , Weidong Zhou 1 , Jian Gao 1 , Xiangyu Pan 1 , Yuliang Li 2
Affiliation  

The artificial synthesis of graphdiyne (GDY) in 2010 successfully fills the blank of low temperature preparation of all-carbon allotropes. GDY is an emerging two-dimensional (2D) planar carbon material composed of benzene rings moieties (sp2 carbon atoms), butadiyne (sp carbon atoms) linkers, and well dispersed electron-rich cavities, forming a large π-conjunction structure. GDY has attracted increasing attention in many fields. GDY is the first carbon material with both 2D fast transfer channels for electrons and 3D channels for ions. The 2D electron-rich all-carbon nature endows GDY with considerable conductivity and tunable electronic properties, and the in-plane cavities give it intrinsic selectivity and accessibility for electrochemically active metal ions. In addition, its easy preparation under mild conditions well complements the disadvantages of the traditional sp2-hybridized carbon materials (carbon nanotubes, graphene, and graphite) in the highly efficient synthesis and processing for potential electrochemical applications. As an all-carbon material, the unique advantages of GDY in both structure and preparation match well the urgent demands in key materials for solving many challenging problems in recent electrochemical areas and beyond. During the last decade since the first preparation of GDY, it has already achieved much enlightening and creative progress in both fundamental scientific research and forward-looking applications. This Account is intended not to summarize all this progress in preparation and applications but to outline some newly reported interesting phenomena in both high-quality preparation and electrochemical applications. This Account mainly discusses the recent progress in electrochemical applications: (i) constructing new concepts and new functions in electrochemical interfaces for realizing highly active electrochemical catalysts in the fields of water splitting and oxygen reduction reaction and (ii) building a highly stable conductive network and electrochemical interface for reversible energy storage. In the field of electrochemical catalysis, based on current studies of structural advantages and superior performance, atomic catalysis with metal atoms anchored in GDY is encouraging, owing to the desirable immobilizing capability of electron-rich dialkyne cavities toward metal atoms and corresponding electron transfer. For high-energy batteries, the in situ growth of the all-carbon GDY on the various battery electrodes shows great promise for solving key practical problems (safety, long lifespan, high power), which are ascribed to weak interfacial stability. In addition, the perspective application of GDY to broader interfacial modifications is described, bringing new choices for solving the interfacial challenges in various energy storage devices.

中文翻译:

Graphdiyne在电化学能源中的基础和应用。

石墨二炔(GDY)的人工合成在2010年成功填补了全碳同素异形体低温制备的空白。GDY是一种新兴的二维(2D)平面碳材料,由苯环部分(sp2碳原子),丁二炔(sp碳原子)接头和分散良好的富电子腔组成,形成大的π结结构。GDY在许多领域引起了越来越多的关注。GDY是第一种同时具有用于电子的2D快速传输通道和用于离子的3D通道的碳材料。2D富电子的全碳性质赋予GDY很大的电导率和可调节的电子特性,而且平面内的腔使它具有固有的选择性和电化学活性金属离子的可及性。此外,它在温和条件下易于制备,很好地弥补了传统的sp2杂化碳材料(碳纳米管,石墨烯和石墨)在高效合成和潜在电化学应用中的缺点。作为全碳材料,GDY在结构和制备方面的独特优势与关键材料的迫切需求相匹配,以解决近期电化学领域及以后的许多难题。自从GDY首次制备以来的最近十年中,它在基础科学研究和前瞻性应用方面都已经取得了许多启发性和创新性的进步。本报告的目的不是要概述制备和应用中的所有进展,而是概述在高质量制备和电化学应用中一些新近报道的有趣现象。该报告主要讨论了电化学应用的最新进展:(i)在电化学界面中构建新概念和新功能,以实现在水分解和氧还原反应领域中的高活性电化学催化剂;(ii)建立高度稳定的导电网络,以及用于可逆能量存储的电化学界面。在电化学催化领域,基于当前对结构优势和优异性能的研究,用锚定在GDY中的金属原子进行原子催化是令人鼓舞的,由于富电子的二炔腔对金属原子的理想固定能力和相应的电子转移。对于高能电池,全碳GDY在各种电池电极上的原位生长显示出解决关键的实际问题(安全性,寿命长,高功率)的巨大希望,这些问题归因于界面稳定性差。此外,还介绍了GDY在更广泛的界面修改中的透视应用,为解决各种储能设备中的界面挑战带来了新的选择。归因于界面稳定性差。此外,还介绍了GDY在更广泛的界面修改中的透视应用,为解决各种储能设备中的界面挑战带来了新的选择。归因于界面稳定性差。此外,还介绍了GDY在更广泛的界面修改中的透视应用,为解决各种储能设备中的界面挑战带来了新的选择。
更新日期:2020-02-06
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