相关实验视频

Updated: Jul 11, 2025

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

三价金属作为水性电池的高容量,高效,低极化和长周期阳极

Songyang Chang¹, Jose Fernando Florez Gomez², Swati Katiyar¹

¹Department of Chemistry, University of Puerto Rico-Rio Piedras Campus, San Juan, Puerto Rico 00925-2537, United States.

Journal of the American Chemical Society

|November 7, 2023

概括

三价金属阳极为水性电池提供高容量,无石的解决方案,在效率和性能方面超过双价金属. 这项研究突出了

科学领域:

材料科学
电化学
能量储存

背景情况:

由于成本,能量密度和安全性,具有多价值金属的水性电池对储能非常有希望.
双价金属阳极 (Zn,Fe,Ni,Mn) 面临着低库伦比效率和树突形成等挑战.
尽管具有独特的氧化还原反应的潜力,但三价金属仍未得到充分探索.

研究的目的:

研究三价 (In) 作为水性电池的高性能金属阳极.
评估的电化学特性,包括容量,氧化还原潜力和化行为.
为了证明基于的完整电池的性能.

主要方法:

在水性电解质中对金属阳极进行电化学测试.
对称细胞测量以评估涂层/剥离效率和偏振.
二氧化物 (In-MnO2) 全细胞的制造和测试.

主要成果:

由于In3+/In氧化还原对,阳极具有高的理论容量,约为700 mAh g-1.
具有合适的氧化还原潜力 (-0.34V与SHE相比) 和无树涂层,达到99.3-99.8%的库伦比效率.
在对称细胞中,阳极表现出极低的极化 (1 mV),明显优于其他报告的金属.
In-MnO2全电池实现了约1.2 V的电池电压,约330 mAh的g-1容量和680个循环.

结论:

三价是水性电池的高效和创新的金属阳极.
印的特性解决了当前双价金属阳极的局限性,提供了更高的效率和稳定性.
这项工作为开发使用三价金属的高性能水性电池开辟了新途径.

更多相关视频

Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries

Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries

Published on: May 22, 2018

1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions

1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions

Published on: October 10, 2016

相关概念视频

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...

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.

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...

Qualitative Analysis

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...