Synthesis of Electrochromic Layered Ceramic Materials and their Application to Display Electrodes

电致变色层状陶瓷材料的合成及其在显示电极中的应用

基本信息

批准号：
61850148
负责人：
HATTORI Makoto
金额：
$ 4.42万
依托单位：
HIROSHIMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850148/
关键词：
Electrochtromism Ceramics Layered crystal Litrium Battery 表示素子 ZrNCl

项目摘要

1. ObjectiveThe color of layer structured <beta>-ZrNCL is reversibly changed from pale yellow-green to black on intercalation and deintercalation of lithium. Since these color changes occur electrochemically, <beta>-ZrNCl can be a promising candidate for electrochromic electrode material. In this project, a new electrochromic display has been developed by using <beta>-ZrNCl as the electrode.2. Results and Major Achievements(1) <beta>-ZrNCl was prepared by a novel reaction of ZrH_2 or Zr metal with ammonium chloride in high yields, and the formation mechanism has been elucidated. (2) <beta>-ZrNCl films were prepared by RF plasme VCD the system of ZrCl_4-N_2NH_3.(3) CVD films of <beta>-ZrNCl were prepared by the thermal decomposition of (NH_4)_2ZrCl_6 vapor. Depending on the preparation conditions, two kinds of oriented films were obrtained; (001) and (100) oriented films, where the basal planes of the crystallites were deposited parallel and perpendifuclar to the substrates, respectively, The films had good transparency with the band absorption edge at 3.2 eV.(4) An electrochromic display was constructrd by using the CVD films of <beta>ZrNCl on a Glass substrate covered with gold thin film. 1 M LiClo_4/propyelne carbonate was used as electrolyte. The (100) oriented films showed good cyclic performance.(5) In order to understand the cyclic behavior of the <beta>-ZrNCl electrode, a lithium battery was constructed. When the battery was deeply discharged, the <beta> -ZrNCl electrode deteriorated and the propllene carbonate decomposed on the surface of the electrode.

1.目的层状结构β-ZrNCL在锂的嵌入和脱嵌过程中颜色可逆地从浅黄绿色变为黑色。由于这些颜色变化是通过电化学发生的，因此β-ZrNCl可以成为电致变色电极材料的有希望的候选者。本项目以β-ZrNCl为电极，研制了一种新型电致变色显示器。 2．结果及主要成果(1)通过ZrH_2或Zr金属与氯化铵的新型反应，高收率地制备了β-ZrNCl，并阐明了其形成机理。 (2)在ZrCl_4-N_2NH_3体系中采用射频等离子体VCD法制备了β-ZrNCl薄膜。(3)利用(NH_4)_2ZrCl_6蒸气的热分解方法制备了CVD薄膜。根据制备条件的不同，得到两种取向膜： (001)和(100)取向薄膜,其中微晶的基面分别平行和垂直于基底沉积,薄膜具有良好的透明度,带吸收边为3.2 eV。 (4)构建了电致变色显示器通过在覆盖有金薄膜的玻璃基板上使用βZrNCl的CVD薄膜。使用1M LiClo_4/碳酸丙酯作为电解质。 (100)取向薄膜表现出良好的循环性能。(5)为了了解β-ZrNCl电极的循环行为，构建了锂电池。当电池深度放电时，β-ZrNCl电极劣化并且碳酸丙烯酯在电极表面分解。