Atomically Dispersed Mo Sites Anchored on Multichannel Carbon Nanofibers toward Superior Electrocatalytic Hydrogen Evolution

电催化剂 过电位 塔菲尔方程 催化作用 材料科学 纳米技术 电解质 分解水 化学工程 碳纤维 化学 物理化学 电化学 电极 有机化学 光催化 工程类 复合材料 复合数
作者
Tongfei Li,Tingyu Lu,Xin Li,Lin Xu,Yiwei Zhang,Ziqi Tian,Jun Yang,Huan Pang,Yawen Tang,Junmin Xue
出处
期刊:ACS Nano [American Chemical Society]
卷期号:15 (12): 20032-20041 被引量:96
标识
DOI:10.1021/acsnano.1c07694
摘要

Developing affordable and efficient electrocatalysts as precious metal alternatives toward the hydrogen evolution reaction (HER) is crucially essential for the substantial progress of sustainable H2 energy-related technologies. The dual manipulation of coordination chemistry and geometric configuration for single-atom catalysts (SACs) has emerged as a powerful strategy to surmount the thermodynamic and kinetic dilemmas for high-efficiency electrocatalysis. We herein rationally designed N-doped multichannel carbon nanofibers supporting atomically dispersed Mo sites coordinated with C, N, and O triple components (labeled as Mo@NMCNFs hereafter) as a superior HER electrocatalyst. Systematic characterizations revealed that the local coordination microenvironment of Mo is determined to be a Mo-O1N1C2 moiety, which was theoretically probed to be the energetically favorable configuration for H intermediate adsorption by density functional theory calculations. Structurally, the multichannel porous carbon nanofibers with open ends could effectively enlarge the exposure of active sites, facilitate mass diffusion/charge transfer, and accelerate H2 release, leading to promoted reaction kinetics. Consequently, the optimized Mo@NMCNFs exhibited superior Pt-like HER performance in 0.5 M H2SO4 electrolyte with an overpotential of 66 mV at 10 mA cm-2, a Tafel slope of 48.9 mV dec-1, and excellent stability, outperforming a vast majority of the previously reported nonprecious HER electrocatalysts. The concept of both geometric and electronic engineering of SACs in this work may provide guidance for the design of high-efficiency molecule-like heterogeneous catalysts for a myriad of energy technologies.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
1秒前
风趣的新波完成签到,获得积分10
1秒前
jo完成签到,获得积分10
2秒前
舒服的白云完成签到,获得积分10
2秒前
zou完成签到,获得积分10
2秒前
忆茶戏发布了新的文献求助10
3秒前
酷波er应助幸运星采纳,获得10
5秒前
华仔应助张雯思采纳,获得10
5秒前
CipherSage应助张雯思采纳,获得30
5秒前
星辰大海应助张雯思采纳,获得10
5秒前
搜集达人应助张雯思采纳,获得10
5秒前
5秒前
田様应助Cl1audia采纳,获得10
5秒前
123发布了新的文献求助10
6秒前
6秒前
搜集达人应助Ma采纳,获得10
6秒前
大模型应助孟欣玥采纳,获得10
6秒前
木可发布了新的文献求助10
7秒前
泊頔完成签到,获得积分10
9秒前
lrq发布了新的文献求助10
10秒前
10秒前
wwl关闭了wwl文献求助
12秒前
mr_chxb82发布了新的文献求助10
12秒前
阿智完成签到,获得积分10
12秒前
大写的LV完成签到 ,获得积分10
13秒前
麦子发布了新的文献求助10
14秒前
852应助wbh采纳,获得10
15秒前
19秒前
lzx发布了新的文献求助10
20秒前
王彩香发布了新的文献求助10
21秒前
五六七发布了新的文献求助150
22秒前
22秒前
mr_chxb82完成签到,获得积分10
22秒前
量子星尘发布了新的文献求助10
23秒前
小二郎应助麦子采纳,获得10
24秒前
清脆凡阳完成签到 ,获得积分10
24秒前
香蕉觅云应助小晓采纳,获得10
25秒前
科研通AI2S应助wwl采纳,获得10
27秒前
30秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989444
求助须知:如何正确求助?哪些是违规求助? 3531531
关于积分的说明 11254250
捐赠科研通 3270191
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174