A multidimensional nanostructural design towards electrochemically stable and mechanically strong hydrogel electrodes

doi:10.1039/d0nr01414a

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	A multidimensional nanostructural design towards electrochemically stable and mechanically strong hydrogel electrodes
	Zhang WJ(张文娟)
刊名	Nanoscale
	2020
卷号	12 期号:12 页码:6637-6643
关键词	Capacitance Conducting polymers Electrodes Electrolytes Nanofibers Nanosheets Polypyrroles Redox reactions Tensile strength Capacitance retention Capacitive characteristics Electrically conductive Hierarchical structures Nanoscale building blocks Poly (vinyl alcohol) (PVA) Polymeric composites Solid-state supercapacitors
ISSN号	20403364
DOI	10.1039/d0nr01414a
英文摘要	Electrically conductive hydrogels are polymeric composites that combine electroactive fillers with hydrogel networks. They offer an electrically conductive pathway for electron transfer and provide an interconnected framework for ion diffusion, as well as an extended active interface for redox reactions, being ideal frameworks to design and construct flexible electrodes. In this work, we integrate nanoscale building blocks into a unique ternary (1, 2 and 3 dimensional) hydrogel architecture, where conductive polymer polypyrrole (PPy) nanofibers (1D) and MXene nanosheets (2D) are uniformly dispersed in polyvinyl alcohol (PVA) matrixes (3D). 1D nanofibers and 2D nanosheets were found to greatly increase the mechanical properties of the hydrogel hosts, demonstrating a remarkable tensile strength of 10.3 MPa and a large elongation over 380%. Moreover, the as-fabricated hierarchical structure effectively promotes electrolyte diffusion, exhibiting exceptional capacitive characteristics, including a high gravimetric specific capacitance of 614 F g-1 (at 1 A g-1) and an unprecedented cycling stability (100% capacitance retention over 10000 cycles). A solid-state supercapacitor is assembled based on these MXene/PPy-PVA hydrogels, which demonstrates an efficient approach to the fabrication of wearable energy storage devices. © 2020 The Royal Society of Chemistry.
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	Royal Society of Chemistry
WOS记录号	WOS:000526890300006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/156364]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang WJ. A multidimensional nanostructural design towards electrochemically stable and mechanically strong hydrogel electrodes[J]. Nanoscale,2020,12(12):6637-6643.
APA	Zhang WJ.(2020).A multidimensional nanostructural design towards electrochemically stable and mechanically strong hydrogel electrodes.Nanoscale,12(12),6637-6643.
MLA	Zhang WJ."A multidimensional nanostructural design towards electrochemically stable and mechanically strong hydrogel electrodes".Nanoscale 12.12(2020):6637-6643.