Development of New Superionic Concucting Glasses and Their Conduction Mechanism

“快离子导电玻璃”具有与电解质溶液一样高的离子电导率，作为固体电解质在发展全固态电池和全固态电致变色显示器方面备受关注。本研究的目的是研制新的超离子导电玻璃，分析其结构，并讨论其导电过程。主要研究结果如下：1.制备了AgI-&lt；Ag_2&Gt；CH-&lt；P_2&gt；&lt；CH_5&gt；(CH=O，S，Se)系超导玻璃，详细研究了O、S、Se的变化对玻璃形成能力、玻璃转变温度、离子电导率、电子电导率、离子输运数等的影响。制备了AgX-&lt；Ag2&Gt；O-Ge&lt；O2&gt；(X=I，Br，Cl)系统中的超离子导电玻璃；与上述第一项对比，研究了I，Br1，Cl2的钒化合对玻璃形成能力、玻璃转变温度、结构…的影响更多，等等。在LiB&lt；O_2&gt；-Lib&lt；S_2&gt；系统中制备了硫氧化物玻璃作为新的&lt；Li^+&gt；离子导体。电导率的最大值出现在组成依赖关系中，命名为“混合阴离子效应”，而不是“混合碱效应”。快冷得到了组成范围较大的玻璃-lt；Li_4&gt；Si&lt；O_4&gt；-&lt；Li_3&gt；B&lt；O_3&gt；体系的电导率与Lib&lt；O_2&gt；-&lt；LiBS_2&gt；采用射频溅射法和射频磁控溅射法在&lt；Li_4&gt；Si&lt；O_4&gt；-&lt；Li_3&gt；&lt；BO_3&gt；系统中制备了非晶态薄膜，确定了制备薄膜的最佳工艺条件，如靶材成分、气体组成、气压等。用拉曼散射光谱研究了&lt；Li_4&gt；Si&lt；O_4&gt；-&lt；Li_3&gt；B&lt；O_3&gt；玻璃的结构，表明玻璃只由&lt；Li^+&gt；，&lt；SiO_4^(4-)&gt；和&lt；BO_3^(3-)&gt；较少

The "superionic conducting glasses", which have ionic conductivities as high as those of electrolyte solutions, attract much attension as solid electrolytes in developing all solid state cells and all solid electrochromic displays. The objectives of the present investigation are to develop new superionic conducting glasses, to analyse their structure, and to discuss their conduction processes. The main results obtained are as follows:1. Superionc conducting glasses in the systems AgI- <Ag_2> Ch- <P_2> <Ch_5> (Ch=O,S,Se) were prepared; the influence of variation of O, S and Se was studied in detail on the glass-forming ability, glass transition temperature, ionic conductivity, electronic conductivity, ionic transport number, and so on.2. Superionic conducting glasses in the systems AgX- <Ag_2> O-Ge <O_2> (X=I,Br,Cl) were prepared; in contrast to the above item 1 the influence of vanication of I, Br and Cl was studied on the glass- forming ability, glass transition temperature, structure … More , and so on.3. Oxysulfide glasses in the system LiB <O_2> -LiB <S_2> were prepared as new <Li^+> ion conductors. The maximum of conductivity was found in the composition dependence and named the "mixed anion effect" in contrast to the "mixed alkali effect".4. The rapid quenching produced the glasses in the wide range of composition in the system <Li_4> Si <O_4> - <Li_3> B <O_3> , and the maximum in composition dependence of conductivities was also found, similar to the case of the system LiB <O_2> - <LiBS_2> .5. Amorphous films were prepared in the system <Li_4> Si <O_4> - <Li_3> <BO_3> by the rf sputtering and the rf magnetron sputtering; the optimum conditions were determined for the preparation of the films, such as the target composition, the gas composition, the gas pressure, and so on.6. The structure of the <Li_4> Si <O_4> - <Li_3> B <O_3> glasses was studied by the Raman scattering spectra, indicating that the glasses were composed of only <Li^+> , <SiO_4^(4-)> and <BO_3^(3-)> . Less