Freestanding Graphene Paper Supported Three-Dimensional Porous Graphene鈥揚olyaniline Nanocomposite Synthesized by Inkjet Printing and in Flexible All-Solid-State Supercapacitor

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• 作者：Kai Chi ; Zheye Zhang ; Jiangbo Xi ; Yongan Huang ; Fei Xiao ; Shuai Wang ; Yunqi Liu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2014
• 出版时间：September 24, 2014
• 年：2014
• 卷：6
• 期：18
• 页码：16312-16319
• 全文大小：496K
• ISSN：1944-8252

文摘

Freestanding paper-like electrode materials have trigged significant research interest for their practical application in flexible and lightweight energy storage devices. In this work, we reported a new type of flexible nanohybrid paper electrode based on full inkjet printing synthesis of a freestanding graphene paper (GP) supported three-dimensional (3D) porous graphene hydrogel (GH)鈥損olyaniline (PANI) nanocomposite, and explored its practical application in flexible all-solid-state supercapacitor (SC). The utilization of 3D porous GH scaffold to load nanostructured PANI dramatically enhances the electrical conductivity, the specific capacitance and the cycle stability of the GH鈥揚ANI nanocomposite. Additionally, GP can intimately interact with GH鈥揚ANI through 蟺鈥撓€ stacking to form a unique freestanding GP supported GH鈥揚ANI nanocomposite (GH鈥揚ANI/GP) with distinguishing mechanical, electrochemical and capacitive properties. These exceptional attributes, coupled with the merits of full inkjet printing strategy, lead to the formation of a high-performance binder-free paper electrode for flexible and lightweight SC application. The flexible all-solid-state symmetric SC based on GH鈥揚ANI/GP electrode and gel electrolyte exhibits remarkable mechanical flexibility, high cycling performance and acceptable energy density of 24.02 Wh kg^鈥? at a power density of 400.33 W kg^鈥?. More importantly, the proposed simple and scale-up full inkjet printing procedure for the preparation of freestanding GP supported 3D porous GH-PANI nanocomposite is a modular approach to fabricate other graphene-based nanohybrid papers with tailorable properties and optimal components.

Keywords:

freestanding graphene paper; three-dimensional porous graphene鈭抪olyaniline nanocomposite; full inkjet printing synthesis; flexible electrode; all-solid-state supercapacitor