Biomass-derived carbon electrodes: Key parameters for understanding the electrocatalytic performance

IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL
Tingwei Sun , Ali Fayad , Alicia Gomis-Berenguer , Conchi Ania
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Abstract

The conversion of biomass into carbon materials has become an essential pillar of sustainability in electrochemical technologies. However, biomass-derived carbons and their electrodes are complex materials. This opinion article raises concerns about the need to correlate physicochemical properties of these carbon materials with those of the biomass precursor, the electrode composition, and the electrode/electrolyte interface to rationalize the comprehension of their electrocatalytic performance. The electrocatalytic activity of biomass-derived carbons in aqueous environments is discussed for several reactions of interest in terms of the nature and stability of electroactive sites and the ability to form radicals. All these are strongly related to the characteristics of the carbon material (composition, type of functional groups, porosity, structural order) and the manufacture of those electrodes. Concerns are also raised about the ambiguities and misconceptions associated with the lack of consensual terminology on biomass-derived carbons. Finally, recommendations are presented when reporting the electrocatalytic activity of biomass-derived carbons; emphasis should be paid to demonstrate the reproducibility of biomass-derived carbon electrodes and their stability through long-term electrocatalytic assays.

生物质衍生碳电极:了解电催化性能的关键参数
将生物质转化为碳材料已成为电化学技术可持续发展的重要支柱。然而,生物质衍生碳及其电极是一种复杂的材料。这篇观点文章提出,需要将这些碳材料的物理化学性质与生物质前体、电极成分以及电极/电解质界面的物理化学性质联系起来,以便合理地理解它们的电催化性能。本文从电活性位点的性质和稳定性以及形成自由基的能力等方面,讨论了生物质衍生碳在水环境中对几种相关反应的电催化活性。所有这些都与碳材料的特性(成分、官能团类型、孔隙率、结构顺序)和电极的制造密切相关。此外,由于缺乏有关生物质衍生碳的统一术语,还存在一些含糊不清和误解的问题。最后,在报告生物质衍生碳的电催化活性时提出了建议;应重视通过长期电催化测试来证明生物质衍生碳电极的可重复性及其稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Current Opinion in Electrochemistry
Current Opinion in Electrochemistry Chemistry-Analytical Chemistry
CiteScore
14.00
自引率
5.90%
发文量
272
审稿时长
73 days
期刊介绍: The development of the Current Opinion journals stemmed from the acknowledgment of the growing challenge for specialists to stay abreast of the expanding volume of information within their field. In Current Opinion in Electrochemistry, they help the reader by providing in a systematic manner: 1.The views of experts on current advances in electrochemistry in a clear and readable form. 2.Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications. In the realm of electrochemistry, the subject is divided into 12 themed sections, with each section undergoing an annual review cycle: • Bioelectrochemistry • Electrocatalysis • Electrochemical Materials and Engineering • Energy Storage: Batteries and Supercapacitors • Energy Transformation • Environmental Electrochemistry • Fundamental & Theoretical Electrochemistry • Innovative Methods in Electrochemistry • Organic & Molecular Electrochemistry • Physical & Nano-Electrochemistry • Sensors & Bio-sensors •
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