相关实验视频

Updated: Jan 15, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

酸氧化物中兴奋剂对性水电催化剂的影响

Minakshi Awasthi¹, Basant Lal²

¹Department of Chemistry Institute of Applied Sciences and Humanities, GLA University, Mathura, Uttar Pradesh, 281406, India.

|October 10, 2025

概括

通过sol-gel合成制备的氧化物电极显示了氧化演化反应 (OER) 的增强电催化活性. 用0.8mol替代的电极表现出卓越的性能,表明了高效电化学氧气生产的潜力.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

电化学氧化演化反应 (OER) 对能量转化技术至关重要.
开发高效和稳定的电催化剂对于推进开放式可再生能源至关重要.
氧化物为OER提供了有前途的催化性能.

研究的目的:

使用 span-60 sol-gel 路径合成和表征 Ni-doped 氧化物电极.
为了评估这些电极在性介质中OER的电催化性能.
调查兴奋剂度对OER活性和反应机制的影响.

主要方法:

尼奥化氧化物电极的Sol-gel合成.
使用FTIR,P-XRD和SEM进行物理化学表征.
通过循环电压测量和Tafel极化对电化学性能进行评估.
温度依赖的动力学研究.

主要成果:

在循环电压测量中,Ni-doped氧化物电极表现出明显的氧化还原峰值.
0.8mol Ni-置换电极显示了OER的最高电催化活性.
这种电极在331mV超电位下实现了88mVdec-1的Tafel斜率和50mAcm-2的电流密度.
该OER机制遵循了与氧化离子度相关的第一阶动力学.
确定了热力学参数,如激活能量 (1030 kJ mol−1) 和反应 (232303 J deg−1 mol−1).

结论:

兴奋剂显著增强了OER氧化物电极的电催化活性.
优化的Ni度 (0.8mol) 导致优越的OER性能.
反应机制包括在电极表面上吸附中间物种.
这些Ni-化氧化物是高效电化学氧化演变的有希望的候选者.

关键词:

循环电压计是循环电压计.这是OER OER.氧化物粗度因子氧化物粗度因子溶凝的合成方法在Span-60中,使用的是Span-60.桌子上的两极化.

更多相关视频

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets

Author Spotlight: A Rapid, Microwave-Assisted Hydrothermal Synthesis Of Nickel Hydroxide Nanosheets

Published on: August 18, 2023

相关概念视频

Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Coagulation

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...