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首页> 外文学位 >Inverse Temperature Crystallization of Perovskite Material Methylammonium Lead Triiodide (CH3NH3PBI3) and its Applications for Energy Storage
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Inverse Temperature Crystallization of Perovskite Material Methylammonium Lead Triiodide (CH3NH3PBI3) and its Applications for Energy Storage

机译：钙钛矿材料甲基碘化三碘化铅（CH3NH3PBI3）的反相结晶及其在储能中的应用

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摘要

Organic-inorganic halide perovskites have shown remarkable progress in the field of solar energy research due to their enhanced efficiencies. However, growth of perovskite crystals is a time consuming and expensive process. To overcome these challenges, researcher came up with an idea of using inverse temperature crystallization phenomenon to grow perovskite crystals rapidly in the ambient conditions. The nucleation and growth of perovskite crystals can be accelerated by the addition of impurities and nanomaterials, such as carbon nanotubes following heterogeneous nucleation phenomenon. In this study, for the first time, we examined the effect of CNT addition on the nucleation and growth of perovskite crystals of CH3NH3PBI 3 through inverse temperature crystallization process. The Differential scanning calorimetry tests showed a decrease in the crystallization temperature with addition of CNTs. Also, increasing concentration of CNTs reduced the nucleation and growth time required. At the same time, it was assumed that the addition of CNTs would enhance the electron capturing efficiency of perovskite crystals, following which the perovskite crystals were tested for Li-ion battery electrode applications. The discharge capacity of 54.40 mAh/g was found in the first cycle, which is comparable with the specific capacity of other organic halide materials. Capacity decayed with increasing number of cycles, but crystals with CNT showed a significantly better performance compared to the electrode made one of crystals without CNT.
机译：有机-无机卤化物钙钛矿由于其提高的效率而在太阳能研究领域显示出显着的进步。然而，钙钛矿晶体的生长是耗时且昂贵的过程。为了克服这些挑战，研究人员提出了一种利用逆温度结晶现象在环境条件下快速生长钙钛矿晶体的想法。钙钛矿晶体的成核和生长可以通过添加杂质和纳米材料（如异质成核现象后的碳纳米管）来加速。在本研究中，我们首次通过逆温度结晶过程研究了CNT添加对CH3NH3PBI 3钙钛矿晶体成核和生长的影响。差示扫描量热法测试显示，随着添加CNT，结晶温度降低。同样，增加CNT的浓度会减少所需的成核和生长时间。同时，人们认为添加碳纳米管可以提高钙钛矿晶体的电子捕获效率，然后对钙钛矿晶体进行锂离子电池电极应用测试。在第一个循环中发现放电容量为54.40 mAh / g，与其他有机卤化物材料的比容量相当。容量随着循环次数的增加而下降，但是与电极制成的碳纳米管相比，具有碳纳米管的晶体表现出明显更好的性能。

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  • 作者

    Desai, Smit.;

  • 作者单位

    Lamar University - Beaumont.;

  • 授予单位 Lamar University - Beaumont.;
  • 学科 Mechanical engineering.
  • 学位 M.E.S.
  • 年度 2017
  • 页码 62 p.
  • 总页数 62
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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