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Engineering Silver Nanowires Networks: From Transparent Electrodes to Multifunctional Devices
2019-04-30 13:59:41 | 【 【打印】【关闭】

SEMINAR

The State Key Lab of 

High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences

中 国 科 学 院 上 海 硅 酸 盐 研 究 所 高 性 能 陶 瓷 和 超 微 结 构 国 家 重 点 实 验 室 

    

 

Engineering Silver Nanowires Networks: From Transparent Electrodes to Multifunctional Devices 

 

Dewei Chu

School of Materials Science and Engineering, University of New South Wales, Sydney, Australia

    

时间:2019 5 7日(星期二)上午 10:30

地点:嘉定园区F42)会议室 

    

欢迎广大科研人员和研究生参与讨论! 

联系人:曾宇平(69906501) 陈俊锋 ( 69987811)  

 

  报告摘要: 

  Recently, silver nanowires (Ag NWs) have been widely studied for various electronic devices applications owing to their excellent electrical conductivity and mechanical flexibility. The main challenge in developing highly conductive Ag NWs networks is the large junction resistance originating from the weak NW contacts. Herein, we demonstrated that conduction of Ag NWs junction can be modulated for various applications, from transparent electrodes to memory selectors, supercapacitor electrodes, and electro-catalysts.  

  First, we demonstrated a novel concept based on the combination of ultraviolet/ozone irradiation and a low-temperature annealing process to effectively utilize and control the fragmentation behaviour to realize memory selector functions.  

  Furthermore, we reported a simple method to combine ultrathin nickel hydroxide (Ni(OH)2) nanosheets (NSs) and Ag NWs as a composite for transparent electrode and all-solid-state supercapacitor applications. In particular, the   Ag NW/Ni(OH)2 NS composite was designed for all-solid-state flexible supercapacitors with a high specific capacitance, moderate cycle stability and good mechanical flexibility. 

  Finally, a bifunctional catalytic material which consists of an outer shell of NiFe-layered double hydroxides and a core spine of Ag NWs was fabricated by one step hydrothermal method.  By introducing the Ag NWs as a support material and ion transport channel, the onset potential and over-potential have been significantly decreased. The enhancement of catalytic performance could be attributed to the fast electron transport rate and synergistic effect induced by Ag and its oxidized state. 

    

  报告人简介: 

  Dr. Dewei Chu (储德韦) 现任澳大利亚新南威尔士大学(UNSW)材料科学与工程学院副教授。20087月获得伟德国际博士学位。同年赴名古屋日本产业综合技术研究所从事博士后研究,2010年获得日本学术振兴会JSPS学者称号。2011年获得澳大利亚研究理事会国家级博后及UNSW Vice-Chancellor基金,2014年获得澳大利亚研究理事会未来学者称号。历任副讲师,讲师,高级讲师,副教授。目前担任UNSW材料科学与工程学院纳米离子实验室负责人。在Nature Communications, Journal of Materials Chemistry A, ACS Interface & Applied Materials, Applied Catalysis B: Environmental 等期刊发表论文120余篇,拥有4项专利。到目前为止总共获得中澳火炬计划等20余项科研资助项目,经费总额超过800万澳元,在读研究生18人。 

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