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相关概念视频

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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Standard Electrode Potentials03:02

Standard Electrode Potentials

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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Potentiometry: Types of Electrodes01:19

Potentiometry: Types of Electrodes

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Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
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基于可逆铜电极的高耐久性可变发射率装置的电极工程.

Runyun He1, Tianwen Liu1, Liqiang Zhang1

  • 1Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
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概括
此摘要是机器生成的。

超薄的 (Ir) 电极显著提高了可变发射率装置的耐用性. 这一突破克服了以前的局限性,为先进的热调节和红外隐形等应用实现了稳定的热调制.

关键词:
骑自行车表现的表现可逆的铜电极位置可逆.超薄金属电极 超薄金属电极变量排放率装置的使用情况

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 电化学 电化学 电化学

背景情况:

  • 可变发射率装置调节红外辐射,用于热伪装和能源效率等应用.
  • 可逆金属电极沉积提供光谱调制,但受到电极降解和不稳定的影响.
  • 由于电极退化,现有的设备面临着循环稳定性的挑战.

研究的目的:

  • 开发一种使用超薄 (Ir) 基电极策略的高耐久性可变发射率装置.
  • 为了提高可逆铜电变量发射率装置的循环稳定性和性能.
  • 研究基于Ir的电极在可扩展,高性能热调节应用中的潜力.

主要方法:

  • 制造可变发射率装置,使用超薄的基于Ir的电极进行可逆铜电极沉积.
  • 电极设备的性能测试,包括循环稳定性,辐射温度变化和辐射率调制.
  • 与基于 (Pt) 的对应物相比,Ir电极设备的性能进行比较.
  • 集成一个Ir-Au电网复合电极,用于同质沉积和大面积设备的制造.
  • 将Cr2O3光学干扰层与用于双频段调制的Ir电极相结合.

主要成果:

  • 在8000个循环后,IR电极设备在辐射温度变化中仅显示了11%的降解,超过了基于Pt的设备.
  • 在6000次循环后,Ir电极设备的发射率调制仅减弱了23%,明显优于基于Pt的设备.
  • 基于Ir的电极由于化学惰性,导电性和机械强度而表现出卓越的稳定性.
  • 大面积的刚性和柔性设备在数千个循环中保持了性能.
  • 双带调制器件的稳定性超过了10,000个周期,具有显著的发射率调制范围.

结论:

  • 超薄的基于Ir的电极策略大大提高了可变发射率装置的循环稳定性和耐用性.
  • 基于IR的电极为需要长期,可靠的热调制的实际应用提供了可行的解决方案.
  • 这一进步对热调节系统,红外隐形和先进显示技术产生了重大影响.