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相关概念视频

Voltaic/Galvanic Cells02:47

Voltaic/Galvanic Cells

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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,...
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Batteries and Fuel Cells03:12

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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...
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DC Battery01:21

DC Battery

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A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
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Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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Charging Conductors By Induction01:15

Charging Conductors By Induction

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The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
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Voltammetric Techniques: Cyclic Voltammetry01:10

Voltammetric Techniques: Cyclic Voltammetry

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Cyclic voltammetry (CV) is an electrochemical technique used to investigate the redox properties of a chemical species. It involves measuring the current response of an electrochemical cell as a function of the applied potential. The setup for cyclic voltammetry typically consists of a working electrode, a reference electrode, and a counter electrode—all immersed in an electrolyte solution. The working electrode is where the redox reaction of interest occurs, while the reference electrode...
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相关实验视频

Updated: Jul 7, 2025

Fabrication of VB2/Air Cells for Electrochemical Testing
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几乎固态全V2O5电池

Guolong Wang1, Xiaoqian Cui1, Zhuofan Yang1

  • 1State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)
|December 22, 2023
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种高性能准固态氧化物 (V2O5) 电池,使用先进的电极和固体聚合物电解质 (SPE). 新的设计为下一代能源存储提供了更好的容量和稳定性.

关键词:
V2O5 的时间.收费运输动力学运输动力学石墨烯是一种石墨烯.固体电解质是一种固体电解质.这是一个对称的电池电池.

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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
  • 储能 储能 储能 储能 储能 储能

背景情况:

  • 固态对称电池提供了一个有希望的未来,但面临着高性能双极电极和固体电解质的挑战.
  • 开发兼容的电极和电解质材料对于推进固态电池技术至关重要.

研究的目的:

  • 开发一种高性能准固态全氧化物 (V2O5) 电池.
  • 为了解决双极电极性能和固体电解质兼容性的局限性.
  • 为了证明对称V2O5电池配置的可行性和优势.

主要方法:

  • 制造无粘合剂的碳织物-V2O5纳米线@石墨烯 (CVOG) 双极电极.
  • 开发一种基于氧化聚乙烯的软交联固体聚合物电解质 (SPE).
  • 电化学分析以分离阴极和阳极反应并评估电池性能.

主要成果:

  • 由于纳米结构和石墨烯包裹,CVOG电极表现出增强的动力学和抑制的溶解.
  • 该SPE显示出高离子导电性,优异的电解质-电极接触,以及低的电荷转移屏障.
  • 固态全电池在0.1°C时实现了158mAhg-1的可逆容量,从0.1°C到2°C保持了61%的容量,在1°C1000次循环后保持了77%.

结论:

  • 开发的准固态全V2O5电池在性能上超越了现有的固态对称电池.
  • 这项工作为具有对称配置的高性能固态电池提供了实用方法.
  • 这些发现有助于推进下一代电池技术的发展.