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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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Acid Halides to Alcohols: LiAlH4 Reduction

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Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
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相关实验视频

Updated: Jun 26, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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在基于化物的全固态电池中恢复成本高效的有机阴极.

Yingjie Gao1, Jiamin Fu1, Yang Hu1

  • 1Department of Mechanical and Materials Engineering, University of Western Ontario, 1151 Richmond St, London, Ontario, N6A 3K7, Canada.

Angewandte Chemie (International ed. in English)
|May 10, 2024
PubMed
概括

研究人员开发了一种全新的全固态电池,使用PQ有机阴极和化物电解质. 这种具有成本效益的电池在室温下运行,具有高容量和电压,解决了当前有机电池面临的挑战.

关键词:
所有固态电池都是固态电池.化物固体电解质的电解质.电池是电池的使用方式.有机阴极是有机的阴极.奇诺是一种氨酸.

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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
  • 可持续能源 可持续能源

背景情况:

  • 无机固体电解质为有机阴极材料在液体电解质中的溶解问题提供了解决方案.
  • 目前基于硫化物的全固态有机电池面临的局限性包括高运行温度,成本和低电压.

研究的目的:

  • 设计和研究一个具有成本效益的全固态电池,利用 (PQ) 作为有机阴极和Li2ZrCl6作为化物固体电解质.
  • 为了应对现有的有机电池中高工作温度,成本和低电压的挑战.

主要方法:

  • 使用PQ有机阴极和Li2ZrCl6化物固体电解质制造全固态电池.
  • 电化学性能测试,包括特定容量,平均放电电压和在室温下100个周期以上的容量保持.
  • 先进的特征化技术研究PQ阴极和固体电解质之间的相互作用,并阐明氧化还原机制.

主要成果:

  • PQ阴极实现了248 mAh g-1 (96%的理论容量) 的高特异容量.
  • 记录了2.74V (相对于Li+/Li) 的高平均放电电压.
  • 在25°C的100个循环后,证明了95%的优异容量保留,表明了良好的稳定性.

结论:

  • 开发的PQ/Li2ZrCl6全固态电池在室温下表现出高性能,克服了以前有机电池设计的局限性.
  • 该研究提供了对固态有机电池中的化学和相互作用的洞察,为实际应用铺平了道路.
  • 这项研究突出了低成本有机阴极材料与化物固体电解质相结合的潜力,用于下一代能源存储解决方案.