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Gum-like nanocomposites as interfacial energy materials for energy storage devices.

机译：口香糖状纳米复合材料作为储能设备的界面能材料。

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摘要

For devices with multiple components working together, the performances of the device are not only dependent on the bulk properties of the components, but also on the interfaces inside the system. However, current battery technology based on a simple combination of battery components usually gives rise to a battery with weak interfaces and so, poor structural integrity, which remarkably deteriorates the device performance during cycling. In this project, first, we propose a new concept, Interfacial Energy Materials (IEMs), for the integration of battery components. Based on this concept, then, we developed two types of multi-functional gum-like nanocomposites with strong adhesion properties as examples for IEMs: including gum-like electrolyte and gum-like dual-conductive adhesive as the binder material. (1) Gum-like electrolyte with thermal-protection capability. High ionic conductivity at the level of liquid electrolytes (10-3 S/cm), strong adhesion properties (adhesion strength: 0.3 MPa), good mechanical properties (modulus of 0.1 MPa at 1Hz) and thermal-protection capability (fuse-like function to automatically show down the battery before it gets on fire) have been integrated into the gummy electrolyte. The roles of wax particles in controlling these significant properties have been systematic studied. At the same time, single-ion gum-like electrolyte has also been realized mainly via the control of the surfactant on the wax particles. (2) Gum-like dual-conductive adhesive (DCA) as an advanced binder materials. Based on the gum-like electrolyte, we further developed the DCA as advanced binder material for battery electrodes. The significant properties achieved for the DCA include strong adhesion properties, good electrical and ionic conductivities, and appropriate rheological properties. These significant properties of binders are highly desired by composite electrodes. Benefited from these significant properties, various plastic composite electrodes have been fabricated with well-integrated structures, optimized conductivities and excellent conformability/stretchability, which has never been realized before based on the author's knowledge. The concept of IEMs will have broad impacts on energy materials and device performances. Also, the proposed gum-like nanocomposites with integration of the significant properties/functions desired by energy materials provide a good example for developing multi-functional energy materials, which are in critical need by next generation of high-performance ESDs.
机译：对于具有多个组件一起工作的设备，设备的性能不仅取决于组件的整体属性，还取决于系统内部的接口。然而，基于电池组件的简单组合的当前电池技术通常产生具有弱接口的电池，因此，不良的结构完整性，这在循环期间显着降低了设备性能。在该项目中，首先，我们提出了一种用于电池组件集成的新概念，界面能材料（IEM）。然后，基于此概念，我们开发了两种类型的具有强粘合性的多功能胶状纳米复合材料作为IEM的示例：包括胶状电解质和胶状双导电胶作为粘合剂材料。 （1）具有热保护能力的胶状电解质。在液体电解质水平上具有高离子电导率（10-3 S / cm），强粘合性能（粘合强度：0.3 MPa），良好的机械性能（在1Hz时的模量为0.1 MPa）和热保护能力（类似于熔断功能）以便在着火之前自动显示电池）已集成到胶状电解液中。蜡粒子在控制这些重要性能方面的作用已得到系统研究。同时，也主要通过控制蜡颗粒上的表面活性剂来实现单离子胶状电解质。 （2）胶状双导电胶（DCA）作为高级粘合剂材料。基于树胶状电解质，我们进一步开发了DCA作为电池电极的高级粘合剂材料。 DCA获得的显着性能包括强粘合性能，良好的电导率和离子电导率以及适当的流变性能。复合电极非常需要粘合剂的这些显着性能。得益于这些显着的特性，各种塑料复合材料电极都具有良好的整体结构，优化的电导率和出色的顺应性/可拉伸性，这在作者的知识基础上从未实现过。 IEM的概念将对能源材料和设备性能产生广泛影响。而且，所提出的口香糖状纳米复合材料具有能源材料所需的重要特性/功能的集成，为开发多功能能源材料提供了一个很好的例子，下一代高性能ESD迫切需要这种多功能能源材料。

著录项

  • 作者

    Wang, Yu.;

  • 作者单位

    Washington State University.;

  • 授予单位 Washington State University.;
  • 学科 Materials science.;Engineering.;Energy.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 195 p.
  • 总页数 195
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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