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相关概念视频

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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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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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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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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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. 
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相关实验视频

Updated: Jul 28, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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离子调制工程向稳定的金属阳极转向.

Ce Wang1, Jiahao Zhu1, Yuhong Jin1

  • 1Key Laboratory for New Functional Materials of Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, P. R. China. jinyh@bjut.edu.cn.

Materials horizons
|May 31, 2023
PubMed
概括
此摘要是机器生成的。

同质离子传输是稳定的金属阳极 (LMA) 和高性能金属电池 (LMB) 的关键. 这项研究探讨了控制离子流,抑制树突和增强电池稳定性的策略.

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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:

  • 统一的Li+运输对于Li金属阳极 (LMA) 的稳定性和Li金属电池 (LMB) 的性能至关重要.
  • 树突的生长和不稳定的固体电解质介相 (SEI) 薄膜降解了LMBs.

研究的目的:

  • 在化/脱落过程中全面研究Li+运输.
  • 为了研究树与SEI的相互作用.
  • 引入用于均化Li+流量和稳定Li金属表面的策略.

主要方法:

  • 在化/脱落过程中分析+运输机制.
  • 探索离子调节策略,包括功能分离器,人工SEI膜,固态电解质和结构性阳极.

主要成果:

  • 控制的离子运输抑制了树突的生长.
  • 稳定SEI膜可以提高电化学性能.
  • 同质化Li+流量导致Li金属表面稳定性得到改善.

结论:

  • 离子传输调节对于高能量密度的LMBs至关重要.
  • 功能分离器,人工SEI,固态电解质和结构性阳极提供了有希望的途径.
  • 对离子运输优化的进一步研究可以释放LMB的潜力.