独特的多异质接口工程Fe-Doped Co-LDH@MoS₂-Ni₃S₂纳米花基电催化剂的整体水分裂:一个实验和理论调查

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Ujjwal Phadikar^1,2, Gopal Sanyal³, Srijib Das^1,2

¹Electric Mobility and Tribology Research Group (EM&TRG), Council of Scientific and Industrial Research-Central Mechanical Engineering Research Institute, Durgapur, 713209, India.

|June 13, 2024

概括

一种新的,价格实惠的,非贵金属电催化剂,Fe-doped Co-LDH@MoS2-Ni3S2/NF,证明了水分裂的高效和氧进化. 这一突破为绿色生产提供了一条途径.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

开发高效和成本效益的电催化剂对于可持续能源技术至关重要.
基于贵金属的催化剂是有效的,但昂贵,阻碍了大规模应用.
非贵金属替代品需要创新的结构设计来实现可比性能.

研究的目的:

设计和合成一种新的,自我支持的,无贵金属的3D层次性的异构结构电催化剂.
评估Fe-doped Co-LDH@MoS2-Ni3S2/NF的电催化活性,无论是演化反应 (HER) 还是氧演化反应 (OER).
用理论计算阐明用于增强催化性能的基本机制.

主要方法:

可控制的二步热水合成的Fe-doped Co-LDH@MoS2-Ni3S2/NF 异构结构.
电化学表征,包括对HER和OER的超电位测量.
初始计算 (状态密度,巴德电荷分析) 以了解电荷转移和电子性质.

主要成果:

合成的电催化剂表现出低超电位,HER为~95mV,OER为~220mV.
一个两电极系统在10 mA cm-2的电流密度下实现了1.54 V的电池电压,用于整体水电解.
理论计算证实了实验结果,将 HER 的性能提升归因于从 Ni3S2-MoS2 混合体向 Fe-doped Co-LDH 的电荷转移.

结论:

开发的Fe-doped Co-LDH@MoS2-Ni3S2/NF 异构结构是一种高效的,非珍贵的双功能电催化剂.
这项研究为可负担的绿色生产提供了有效的战略.
这项研究为设计用于整体水电解的先进非贵金属电催化剂铺平了道路.

关键词:

在 Ab initio 计算过程中,双功能的催化剂具有两种功能.兴奋剂的使用兴奋剂的使用在现场增长增长.协同作用的合

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