Electronic structure reconfiguration of nickel–cobalt layered double hydroxide nanoflakes via engineered heteroatom and oxygen-vacancies defect for efficient electrochemical water splitting

氢氧化物 双功能 杂原子 电化学 材料科学 分解水 析氧 过电位 化学工程 塔菲尔方程 无机化学 化学 冶金 催化作用 电极 有机化学 戒指(化学) 工程类 物理化学 光催化
作者
Kai Chen,Yonghua Cao,Sunny Yadav,Gyu-Cheol Kim,Zheng Han,Wenmeng Wang,Weijin Zhang,Dung Van Dao,In-Hwan Lee
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:463: 142396-142396 被引量:94
标识
DOI:10.1016/j.cej.2023.142396
摘要

The development of earth-abundant and high-efficiency bifunctional electrocatalysts is extremely desirable for electrochemical water splitting, but there are some critical challenges that need to be addressed. The coordinated tailoring of electronic structure and Bader charge transference by heteroatom doping and oxygen vacancy defects are one of the strongest tactics to enhance the oxygen and hydrogen evolution reactions (OER and HER) of catalysts. Herein, a novel Mo-decorated nickel–cobalt layered double hydroxides 3D honeycomb nanoflake on Ni foam (labeled as Mo-NiCo LDHs(Vo)) as bifunctional electrode materials with enriched oxygen vacancy defects, excellent geometric stability, and enriched active sites was successfully fabricated through a facile hydrothermal reaction strategy. Density functional theory computations and experimental results confirmed that the electrocatalytic intrinsic activity of Mo-NiCo LDHs(Vo) was optimized not only because of the provision of new active sites by the Mo dopants via the construction of defects and oxygen vacancies but also because of the activation of the local electronic structures of the surrounding Ni and Co sites. Consequently, Mo-NiCo LDHs(Vo) exhibited outstanding electrocatalytic performance with an overpotential of 258 mV for OER and 194 mV for HER at a current density of 10 mA/cm2 in an alkaline medium. In addition, the catalyst exhibited excellent long-term stability after 100 h of use as a bifunctional electrode for overall water splitting. This work provides a facile means to fabricate superior, efficient noble metal-free catalysts with well-designed defects at the atomic-level using electronic structure engineering for energy-related applications.
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
ovoclive发布了新的文献求助10
1秒前
1秒前
文档发布了新的文献求助10
1秒前
momo发布了新的文献求助10
2秒前
踏实的火龙果应助何白采纳,获得10
4秒前
5秒前
微醺小王发布了新的文献求助10
6秒前
Hello应助暴躁小龙采纳,获得10
7秒前
shenyu完成签到 ,获得积分10
8秒前
魏源发布了新的文献求助10
8秒前
ovoclive完成签到,获得积分10
9秒前
缥缈冷安完成签到,获得积分10
10秒前
SciGPT应助魏源采纳,获得10
14秒前
暴躁小龙完成签到,获得积分10
14秒前
15秒前
大模型应助勤奋梨愁采纳,获得10
15秒前
zwk完成签到,获得积分10
16秒前
Meidina完成签到,获得积分10
16秒前
微醺小王完成签到,获得积分10
17秒前
18秒前
David发布了新的文献求助20
20秒前
gan完成签到,获得积分10
20秒前
Jasper应助nini采纳,获得10
20秒前
暴躁小龙发布了新的文献求助10
20秒前
量子星尘发布了新的文献求助10
20秒前
遇见完成签到 ,获得积分10
22秒前
22秒前
只想困瞌睡完成签到,获得积分10
23秒前
tonyhuang完成签到,获得积分10
23秒前
鸣蜩阿六完成签到,获得积分10
25秒前
笃定完成签到,获得积分10
25秒前
41应助潘善若采纳,获得10
25秒前
25秒前
28秒前
momo发布了新的文献求助10
28秒前
whisper完成签到,获得积分10
29秒前
momo应助奚斌采纳,获得10
30秒前
情怀应助十九岁的时差采纳,获得10
31秒前
独角兽完成签到 ,获得积分10
32秒前
zhy完成签到,获得积分10
32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 3989297
求助须知:如何正确求助?哪些是违规求助? 3531418
关于积分的说明 11253893
捐赠科研通 3270097
什么是DOI,文献DOI怎么找? 1804884
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809158