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Cryo-electron Microscopy01:28

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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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高性能冷温度离子热电液体电池是通过一种eutectic溶剂策略开发的.

Shuaihua Wang1, Yuchen Li1, Mao Yu1

  • 1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.

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概括

研究人员开发了一种新型的离子热电 (i-TE) 液体电池,使用深度环氧溶剂,可在低温下降至-35°C的冷温度下有效地回收低度热量.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 能源转换 能源转换
  • 电化学 电化学 电化学

背景情况:

  • 离子热电 (i-TE) 液体电池提供可持续的低等级热回收.
  • 水性电解质将i-TE细胞限制在其结点以上的温度.
  • 开发与冷温度兼容的i-TE系统对于寒冷环境至关重要.

研究的目的:

  • 设计一种高性能i-TE液体电池,能够在零度以下的温度下工作.
  • 为了克服传统水性电解质的结点限制.
  • 展示i-TE技术在寒冷地区的热回收潜力.

主要方法:

  • 使用formamide和水制造一种深度浸溶剂,以制造一种抗电解质.
  • 电极材料和细胞架构的协同优化.
  • 在冷温度下对i-TE液体电池的性能特征.

主要成果:

  • 开发的i-TE液体电池有效地运行到-35°C.
  • 在105°C的温度梯度下,达到17.5W/m2的功率密度和27kJ/m2的2小时能量密度 (冷端:-35°C,热端:70°C).
  • 一个25细胞模块的原型产生了6.9V的开通电压,68mA的短路电流和131mW的最大功率.

结论:

  • 深度欧性溶剂策略使强大的i-TE液体电池能够用于冷温度应用.
  • 高功率输出和抗能力使该系统适合在极寒条件下进行热回收.
  • 这种进步扩大了i-TE技术的运行范围和适用性.