Journal Article

FZJ-2026-01160

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Stretchable high-capacitance supercapacitors enabled by Soft-Pore-Array engineered Ag@polyurethane current collectors

Jiang, X. ; Wang, M. ; Shang, Y. ; Xu, T. ; Cui, J. ; Forberich, K.FZJ* ; Zhang, C. (Corresponding author) ; Meng, H. (Corresponding author)

2025
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.cej.2025.168489

Abstract: The pursuit of next-generation wearable electronics demands energy storage systems that reconcile extreme deformability with high electrochemical performance, a challenge inadequately addressed by existing intrinsically stretchable or structurally engineered supercapacitors (SCs). Herein, we introduce a Soft-Pore-Array (SP) architecture that synergizes material innovation with hierarchical structural design. A novel class of fluorine-enhanced transparent polyurethanes is engineered to function dually as low-modulus elastic substrates (>2600 % strain tolerance) and interfacial-compliant binders. The SP configuration incorporates stress-adaptive pore arrays that redistribute >83 % strain to the compliant regions while achieving unprecedented electromechanical stability: current collector resistance remains as low as 7 Ω even under 1000 % strain – the lowest reported value to date – coupled with excellent fatigue resistance over 10,000 cycles at 100 % strain. When integrated with the solketal-modified poly(2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt) (S-PAMPS) hydrogel electrolyte, the resulting symmetric MXene-based SP supercapacitors (SP-SCs) demonstrate record-breaking areal specific capacitance, maintaining 1513 mF/cm2 at 50 % strain and retaining 823 mF/cm2 under extreme 150 % strain deformation. Through multimodal strain mitigation mechanisms – including pore-mediated strain localization, triaxial mechanical interlocking, and strain-induced interfacial activation – this work establishes a universal paradigm for creating high-performance stretchable energy devices that transcend conventional performance-stretchability trade-offs.

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IET-2)

Research Program(s):

1. 1212 - Materials and Interfaces (POF4-121) (POF4-121)

Appears in the scientific report 2025

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Database coverage:
; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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