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Towards flexible solid-state supercapacitors for smart and wearable electronics

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Abstract

Flexible solid-state supercapacitors (FSSCs) are frontrunners in energy storage device technology and have attracted extensive attention owing to recent significant breakthroughs in modern wearable electronics. In this study, we review the state-of-the-art advancements in FSSCs to provide new insights on mechanisms, emerging electrode materials, flexible gel electrolytes and novel cell designs. The review begins with a brief introduction on the fundamental understanding of charge storage mechanisms based on the structural properties of electrode materials. The next sections briefly summarise the latest progress in flexible electrodes (i.e., freestanding and substrate-supported, including textile, paper, metal foil/wire and polymer-based substrates) and flexible gel electrolytes (i.e., aqueous, organic, ionic liquids and redox-active gels). Subsequently, a comprehensive summary of FSSC cell designs introduces some emerging electrode materials, including MXenes, metal nitrides, metal–organic frameworks (MOFs), polyoxometalates (POMs) and black phosphorus. Some potential practical applications, such as the development of piezoelectric, photo-, shape-memory, self-healing, electrochromic and integrated sensor-supercapacitors are also discussed. The final section highlights current challenges and future perspectives on research in this thriving field.

Graphical abstract: Towards flexible solid-state supercapacitors for smart and wearable electronics

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Publication details

The article was received on 09 Jul 2017 and first published on 05 Feb 2018


Article type: Review Article
DOI: 10.1039/C7CS00505A
Citation: Chem. Soc. Rev., 2018, Advance Article
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    Towards flexible solid-state supercapacitors for smart and wearable electronics

    D. P. Dubal, N. R. Chodankar, D. Kim and P. Gomez-Romero, Chem. Soc. Rev., 2018, Advance Article , DOI: 10.1039/C7CS00505A

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