Cover Image, Volume 6, Number 8, August 2024

IF 19.5 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon Energy Pub Date : 2024-08-29 DOI:10.1002/cey2.652

Wei Zhang, Hui Li, Daming Feng, Chenglin Wu, Chenghua Sun, Baohua Jia, Xue Liu, Tianyi Ma

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引用次数: 0

Abstract

Front cover image: Electrocatalytic CO₂ reduction to syngas (CO and H₂) offers an efficient way to mitigate carbon emissions and store intermittent renewable energy in chemicals. However, it is tricky to produce an adjustable ratio of syngas due to the difficulty of maintaining a balance between CO₂ reduction reaction (CO₂RR) and the competing hydrogen evolution reaction (HER). In article number cey2.461, Zhang et al. prepare hierarchical one-dimensional/three-dimensional nitrogen-doped porous carbon (1D/3D NPC) by carbonizing the composite of Zn-MOF-74 crystals in situ grown on a commercial melamine sponge (MS). Benefiting from the unique spatial environment of 1D/3D NPC, the reaction kinetics is significantly improved by increasing specific surface areas, CO₂ adsorption, mass transport, and facilitating electron transfer from the 3D N-doped carbon framework to 1D porous carbon. The bifunctional activity of N-doped carbon materials for CO₂RR and HER is beneficial for regulating the balance between CO₂RR and HER. The carbonizing temperatures can affect the distribution of N species and further dominate syngas composition ratios.

Abstract Image

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封面图片，第 6 卷第 8 号，2024 年 8 月

封面图片：电催化二氧化碳还原为合成气（CO 和 H2）为减少碳排放和将间歇性可再生能源储存在化学品中提供了一种有效方法。然而，由于难以保持二氧化碳还原反应（CO2RR）和竞争性氢进化反应（HER）之间的平衡，要生产出比例可调的合成气十分困难。在cey2.461号文章中，Zhang等人通过对在商用三聚氰胺海绵（MS）上原位生长的Zn-MOF-74晶体复合材料进行碳化，制备了分层的一维/三维掺氮多孔碳（1D/3D NPC）。得益于 1D/3D NPC 独特的空间环境，通过增加比表面积、二氧化碳吸附、质量传输以及促进电子从三维掺氮碳框架转移到一维多孔碳，反应动力学得到了显著改善。掺杂 N 的碳材料对 CO2RR 和 HER 的双功能活性有利于调节 CO2RR 和 HER 之间的平衡。碳化温度会影响 N 物种的分布，并进一步主导合成气成分比。

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来源期刊

Carbon Energy Multiple-

CiteScore

25.70

自引率

10.70%

发文量

116

审稿时长

4 weeks

期刊介绍： Carbon Energy is an international journal that focuses on cutting-edge energy technology involving carbon utilization and carbon emission control. It provides a platform for researchers to communicate their findings and critical opinions and aims to bring together the communities of advanced material and energy. The journal covers a broad range of energy technologies, including energy storage, photocatalysis, electrocatalysis, photoelectrocatalysis, and thermocatalysis. It covers all forms of energy, from conventional electric and thermal energy to those that catalyze chemical and biological transformations. Additionally, Carbon Energy promotes new technologies for controlling carbon emissions and the green production of carbon materials. The journal welcomes innovative interdisciplinary research with wide impact. It is indexed in various databases, including Advanced Technologies & Aerospace Collection/Database, Biological Science Collection/Database, CAS, DOAJ, Environmental Science Collection/Database, Web of Science and Technology Collection.