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相关概念视频

Precipitation Gravimetry01:03

Precipitation Gravimetry

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Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
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Electrodeposition01:08

Electrodeposition

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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...
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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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相关实验视频

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Motor Dual-Tasks for Gait Analysis and Evaluation in Post-Stroke Patients
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双重使用的尼科.

Xiaohong Ma1, Jie Fu1, Linning Gao1

  • 1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P. Box 98, Beisanhuan East Road 15, Beijing 100029, P. R. China. lujun@mail.buct.edu.cn.

Nanoscale
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PubMed
概括

双重功能的电化学材料,如NiCo2S4纳米板,可以在可充电电池中有效地储存太阳能. 这些材料显著降低了充电电压,在阳光下节省了大量的电能.

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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
  • 可再生能源可再生能源是可再生能源.

背景情况:

  • 太阳能的间歇性需要有效的储能解决方案.
  • 将多个能量存储功能集成到单个设备中可以提高太阳能可充电电池的竞争力.
  • 活性电化学材料是各种能源存储需求的关键组成部分.

研究的目的:

  • 为多场景太阳能储能引入双重功能的电化学功能材料.
  • 使用这些新型材料设计和制造太阳能可充电电池.
  • 为了评估在太阳光照明下储能性能和效率.

主要方法:

  • 制备双重功能的NiCo2S4纳米板.
  • 一个光学辅助的水性多硫化物/化物流电池的制造.
  • 使用NiCo2S4阳极制造光学辅助的离子电池.
  • 在模拟太阳能条件下测试电化学性能和节能 (AM 1.5,100 mW cm-2).

主要成果:

  • NiCo2S4纳米板在水性氧化还原对中表现出极好的电催化性能.
  • 照片辅助流动电池实现了0.05V的低充电电压,节省了93.5%的输入电能.
  • 照片辅助的离子电池表现出0.67V的低充电电压和1.05V的高放电电压,节省了67.6%的输入电能.

结论:

  • 双重功能的NiCo2S4纳米板对于多场景太阳能储能应用非常有效.
  • 开发的光辅助电池由于在太阳光照明下具有低充电电压,可以显著节省能源.
  • 这种方法为提高太阳能可充电电池的效率和实用性提供了一个可行的策略.