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首页> 外文会议>NATO-Carbon Advanced Research Workshop and Conference on New Carbon Based Materials for Electrochemical Energy Storage Systems; 20031019-24; Argonne,IL(US) >HIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY IMAGE ANALYSIS OF DISORDERED CARBONS USED FOR ELECTROCHEMICAL STORAGE OF ENERGY
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HIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY IMAGE ANALYSIS OF DISORDERED CARBONS USED FOR ELECTROCHEMICAL STORAGE OF ENERGY

机译：能量电化学存储用杂散碳的高分辨率透射电子显微镜图像分析

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摘要

Our procedure of computerized HRTEM images analysis allows quantitative and de-averaged structural data on carbons to be obtained. Such data give the solid experimental basis required to build reliable models of organization. Moreover, the relationships between formation conditions -carbon material organization and properties can thus be specified. Such approach was successfully applied to two types of disordered carbons presently tested for the electrochemical storage of energy: a carbon-carbon composite material (a microporous carbon fiber-based cloth coated with a pyrocarbon) used as anode for lithium-ion battery, and carbon aerogels with a controlled pore size distribution (micropores and mesopores) adapted for galvanostatic energy storage in aqueous medium. In the first case, coupling in situ ~7Li-NMR- potentiometry-HRTEM image analysis leads to a relevant model of lithium insertion and de-insertion in these anodes ('Corridor model'). For the second case, different ways of energy storage in aqueous medium are presently tested on the designed aerogels; in the future, the storage capacity will be discussed taking to account the data on their multiscale organization quantified by HRTEM image analysis.
机译：我们的计算机化HRTEM图像分析程序允许获得碳的定量和平均化的结构数据。这些数据为建立可靠的组织模型提供了坚实的实验基础。而且，因此可以指定形成条件-碳材料组织和性质之间的关系。这种方法已成功应用于目前已测试用于电化学存储能量的两种类型的无序碳：用作锂离子电池阳极的碳-碳复合材料（涂有热碳的微孔碳纤维基布）和碳具有可控孔径分布（微孔和中孔）的气凝胶，适用于在含水介质中进行恒电流能量存储。在第一种情况下，原位耦合〜7Li-NMR-电位法-HRTEM图像分析会导致在这些阳极中插入和脱嵌锂的相关模型（“走廊模型”）。对于第二种情况，目前在设计的气凝胶上测试了在水性介质中不同的能量存储方式。将来，将考虑通过HRTEM图像分析量化的多尺度组织数据来讨论存储容量。

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