Viologen-bridged polyaniline based multifunctional heterofilms for all-solid-state supercapacitors and memory devices
Viologen-bridged polyaniline based multifunctional heterofilms for all-solid-state supercapacitors and memory devices
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DOI：
10.1016/j.eurpolymj.2017.11.013
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发表时间：
2018
影响因子：
6
通讯作者：
Luxing Wang;Sai Sun;Yafei He;Nan He;Fan Zhang;Yefeng Yao;Bin Zhang;Xiaodong Zhuang;Yu Chen
中科院分区：
文献类型：
--
作者：
Luxing Wang;Sai Sun;Yafei He;Nan He;Fan Zhang;Yefeng Yao;Bin Zhang;Xiaodong Zhuang;Yu Chen
紫精和聚苯胺（PANI）都表现出很高的电化学氧化还原活性，可用于制造光电、电子和能量存储器件以及传感器。然而，通过共价键将这两种迷人的材料结合在一起以避免物理混合物中的相分离仍然是一个巨大的挑战。本文采用一步电聚合法在氧化铟锡（ITO）玻璃上制备了紫精桥联的聚苯胺（VBP）膜，并将原位合成的金纳米粒子（AuNPs）夹在VBP膜之间形成异质膜（VBP| Au| VBP）作为活性物质。船民|Au|通过简单的逐层方法制备了基于VBP的电子存储器件和全固态超级电容器，它们分别具有高达105的高ON/OFF电流比和高达6.22 Fcm-3的高体积电容，表现出非易失性存储器性能。该工作不仅为通过共价键合成紫精桥联聚苯胺材料提供了一种新的、简便的方法，而且为基于合理设计异质膜的高效阻变存储器（RRAM）器件和全固态超级电容器的开发奠定了基础。
Both the viologen and polyaniline (PANI) have shown high electrochemical redox activity that can be used to fabricate optoelectronic, electronic and energy storage devices as well as sensors. However, it still remains great challenge for integrating these two fascinating materials together via covalent linkage to avoid phase separation in physical mixtures. In this work, a novel viologen-bridged polyaniline film (hereafter called as VBP) onto the indium-tin-oxide (ITO) glass was prepared by one-step electropolymerization approach, and then the in-situ synthesized golden nanoparticles (AuNPs) were sandwiched between the VBP films to produce the heterofilms (VBP|Au|VBP) as active materials. The VBP|Au|VBP-based electronic memory device and all-solid-state supercapacitor, which exhibited bistable nonvolatile rewritable memory performance with high ON/OFF current ratio of 105and high volumetric capacitance up to 6.22 Fcm−3, respectively, were fabricated through simple layer-by-layer method. This work not only offers a new and easy strategy for synthesizing viologen-bridged PANI materials through covalent bonding, but also paves the way for the development of high-efficient sandwich-type resistive random access memory (RRAM) devices and the all-solid-state supercapacitors based on rational designed heterofilms.