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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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Electrolysis03:00

Electrolysis

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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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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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The Nernst Equation02:59

The Nernst Equation

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Nonstandard Reaction Conditions
The interconnection between standard cell potentials and various thermodynamic parameters such as the standard free energy change ΔG° and equilibrium constant K has been previously explored. For example, a redox reaction involving zinc(II) and tin(II) ions at 1 M concentration with Eºcell = +0.291 V and ΔG° = −56.2 kJ is spontaneous.
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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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相关实验视频

Updated: Jul 14, 2025

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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可充电的Li/Cl电池 低至-80°C

Peng Liang1, Guanzhou Zhu1, Cheng-Liang Huang2

  • 1Department of Chemistry and Bio-X, Stanford University, Stanford, CA, 94305, USA.

Advanced materials (Deerfield Beach, Fla.)
|October 7, 2023
PubMed
概括

这项研究引入了新型可充电/ (Li/Cl2) 电池,可在-80°C下有效运行. 这些低温电池为极端环境应用提供高容量和稳定性.

关键词:
在Cl2陷中捕获Cl2.高容量的高容量电机.可充电的/电池可以充电.硫乙烯化物 (SOCl2) 是一种超低温的温度是非常低的温度.

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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:

  • 低温可充电电池对于寒冷气候,极地探险,深海勘探和太空任务的应用至关重要.
  • 现有的电池技术在零度以下的温度下经常遭受性能下降,从而限制了它们的运行范围.

研究的目的:

  • 开发和描述一种新的可充电/ (Li/Cl2) 电池系统,能够在低至-80°C的温度下有效运行.
  • 在极端低温条件下研究拟议的电池化学的电化学性能和循环稳定性.

主要方法:

  • 使用金属阳极,二氧化碳 (CO2) 激活多孔碳阴极 (KJCO2) 和新型电解质制造一个Li/Cl2电池.
  • 电解质组成:化 (AlCl3),化 (LiCl) 和二 (LiFSI) 在化 (SOCl2) 中.
  • 电化学表征包括电荷-放电循环,静电性能测试,质谱学和X射线光电子谱学 (XPS).

主要成果:

  • /2电池在低至-80°C的温度下达到3.5-4V之间的工作电压.
  • 证明了高的第一次放电容量,范围从100-4500 mAh g-1 (基于碳质量) 和可逆容量1200-5000 mAh g-1超过130个周期.
  • 在充电过程中确定了物种 (Cl2,SCl2,S2Cl2) 在多孔碳阴极内被捕获,使得在不同的电压高原 (-80 °C:SCl2 / S2Cl2降低约4V,Cl2降低约3.1V) 实现可逆降低.

结论:

  • 开发的Li/Cl2电池系统在低温储能应用中表现出有前途的性能.
  • 新型电解质和多孔碳阴极促进了高效的电荷转移和可逆的物种在-80°C下循环.
  • 这项工作为在极度寒冷的环境中可靠的电源铺平了道路,包括太空探索和极地研究.