相关实验视频

Updated: Jul 21, 2025

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

可控制的碳皮蚀刻通过二元比斯集群用于-逆氧流电池

Jihan Park^1,2,3, Minsoo Kim^1,2,3, Jinyeong Choi^1,2,3

¹Research Center of Energy Convergence Technology, Pusan National University, Busandaehak-ro 63beon-gil 2, Geumjeong-gu, Busan 46241, Republic of Korea.

ACS applied materials & interfaces

|July 27, 2023

概括

这项研究引入了一种新的V/Mn氧化还原流电池 (RFB),采用离子交换膜和-双蚀刻碳感. 这种组合通过改善氧化还原动力学和减少交叉来提高能源效率和电池性能.

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
储能储能储能储能储能储能

背景情况:

氧化还原流电池 (RFB) 对大规模储能充满希望,但面临着低能量密度和高成本的挑战.
目前的RFB需要对电极进行修改,以改善缓慢动力学和可逆性.
通过膜的离子相关交叉会导致自放电,限制电池的效率.

研究的目的:

开发一个具有增强性能和耐用性的V/Mn RFB.
使用离子交换膜 (AEM) 减轻离子交叉.
使用新型电极材料改善氧化还原反应动力学.

主要方法:

制造尼克尔-比斯穆特蚀刻碳 (NB-ECF) 用于瓦纳化物.
使用NB-ECF和AEM组装一个V/Mn RFB.
电化学表征以评估氧化还原反应动力学和电池性能.

主要成果:

该NB-ECF电极显著提高了V²⁺/V³⁺氧还原反应的可逆性和动力学.
该AEM有效地减轻了离子交叉,减少了自放电.
在50个循环中,V/Mn RFB在20 mA cm-2时实现了85.7%的高能效,而没有降低容量.

结论:

AEM和NB-ECF电极的协同效应导致V/Mn RFB性能得到改善.
使用两个金属物种的新型电催化剂设计为先进的RFB开发提供了有前途的战略.
这种方法解决了当前基于的流量电池的主要局限性.

关键词:

比斯穆特 (Bismuth) 是一种天然矿物.电催化剂是一种电催化剂.蚀刻蚀刻蚀刻是一个尼克尔尼克尔是什么意思瓦纳阳解酸盐是一种瓦纳.

更多相关视频

Fabrication of VB2/Air Cells for Electrochemical Testing

Fabrication of VB2/Air Cells for Electrochemical Testing

Published on: August 5, 2013

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

相关概念视频

Voltaic/Galvanic Cells

Voltaic/Galvanic Cells

Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...

Batteries and Fuel Cells

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...

Balancing Redox Equations

Balancing Redox Equations

Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...