气候变化领域集成服务门户(CCPortal): Modularly aromatic-knit graphitizable phenolic network as a tailored platform for electrochemical applications

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DOI	10.1039/d1ee00402f
	Modularly aromatic-knit graphitizable phenolic network as a tailored platform for electrochemical applications
	Choi G.H.; Nam M.G.; Kwak S.J.; Kim S.H.; Chang H.; Shin C.-S.; Lee W.B.; Yoo P.J.
发表日期	2021
ISSN	17545692
起始页码	3203
结束页码	3215
卷号	14 期号:5
英文摘要	Polyphenols hold tremendous potential for various electrochemical applications due to their non-covalent bonding-based simple coating process and high compatibility with chelating active metallic species. However, polyphenols are intrinsically prone to full thermal dissociation upon high-temperature carbonization due to the thermal instability of ester linkages in the molecular structure, rarely leaving a residual carbon support for further electrochemical reactions. To overcome this limitation and improve the carbonizability of polyphenol-based complexes, in this report, we employed a planarizing modularization strategy of polyphenols through rearrangement of the molecular structure of tannic acid (TA). During this rearrangement process, TA molecules simultaneously undergo C-C coupling and C-O bonding at each aromatic unit with remarkably enhanced molecular cyclicity to generate modularly interconnected TA (m-TA). The carbonized m-TA provides a high residual carbon content (42% after 900 °C pyrolysis) and maintains the intrinsic graphitic carbonaceous matrix. Furthermore, electrochemically active metallic species (Ni, Co, Fe, or Sn) were readily introduced along with a planarized frame of the carbonized m-TA. As such, the graphitic sp2 domains hybridized with reduced metallic nanoclusters present in carbonized m-TA synergistically imparted outstanding ionic and electrical conductivities. The ideally created new electrochemical platform of graphitically carbonized m-TA was utilized as a highly stable anode for secondary battery systems and as an on-demand electrocatalyst for water splitting with tunable activity. © 2021 The Royal Society of Chemistry.
英文关键词	Carbon; Carbonization; Dissociation; Electrocatalysts; Modular construction; Molecular structure; Electrical conductivity; Electrochemical applications; Electrochemical platforms; Electrochemical reactions; Metallic nanoclusters; Non-covalent bondings; Rearrangement process; Thermal instabilities; Thermodynamic stability; chemical bonding; detection method; electrical conductivity; electrochemical method; graphite; molecular analysis; pyrolysis; temperature effect
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190659
作者单位	School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, South Korea; School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, South Korea; Department of Carbon Convergence Engineering, Wonkwang University, Iksan, 54538, South Korea; Sdi RandD Centre, Samsung Co., Ltd, Suwon, 16678, South Korea; Skku Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, South Korea
推荐引用方式 GB/T 7714	Choi G.H.,Nam M.G.,Kwak S.J.,et al. Modularly aromatic-knit graphitizable phenolic network as a tailored platform for electrochemical applications[J],2021,14(5).
APA	Choi G.H..,Nam M.G..,Kwak S.J..,Kim S.H..,Chang H..,...&Yoo P.J..(2021).Modularly aromatic-knit graphitizable phenolic network as a tailored platform for electrochemical applications.Energy & Environmental Science,14(5).
MLA	Choi G.H.,et al."Modularly aromatic-knit graphitizable phenolic network as a tailored platform for electrochemical applications".Energy & Environmental Science 14.5(2021).