A multifunctional interface design on cellulose substrate enables high performance flexible all-solid-state supercapacitors

Chen, Ruwei; Yang, Yang; Huang, Qikai; Ling, Hao; Li, Xinsheng; Ren, Junli; Zhang, Kai; Sun, Run‐Cang; Wang, Xiaohui

doi:10.1016/j.ensm.2020.07.030

Cited by 53 publications

(25 citation statements)

References 42 publications

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“…However, the durability of coated material, and the adhesion between active electrode and substrate fabric remain to be further investigated. To achieve good adhesion, cellulose textile fabric integrated with polydopamine was obtained by in situ polymerization of dopamine on the fabric [ 139 ]. The carbonized fabric surface was covered by interconnected polydopamine nanoparticles that formed a 3D porous network.…”

Section: Electrochemical (Ec) Performance Of Lignocellulose-derived Carbon-based Flexible Supercapacitorsmentioning

confidence: 99%

Lignocellulosic Biomass-Derived Carbon Electrodes for Flexible Supercapacitors: An Overview

Xiang

Lin

et al. 2021

Materials

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With the increasing demand for high-performance electronic devices in smart textiles, various types of flexible/wearable electronic device (i.e., supercapacitors, batteries, fuel cells, etc.) have emerged regularly. As one of the most promising wearable devices, flexible supercapacitors from a variety of electrode materials have been developed. In particular, carbon materials from lignocellulosic biomass precursor have the characteristics of low cost, natural abundance, high specific surface area, excellent electrochemical stability, etc. Moreover, their chemical structures usually contain a large number of heteroatomic groups, which greatly contribute to the capacitive performance of the corresponding flexible supercapacitors. This review summarizes the working mechanism, configuration of flexible electrodes, conversion of lignocellulosic biomass-derived carbon electrodes, and their corresponding electrochemical properties in flexible/wearable supercapacitors. Technology challenges and future research trends will also be provided.

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Section: Electrochemical (Ec) Performance Of Lignocellulose-derived Carbon-based Flexible Supercapacitorsmentioning

confidence: 99%

Lignocellulosic Biomass-Derived Carbon Electrodes for Flexible Supercapacitors: An Overview

Xiang

Lin

et al. 2021

Materials

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“…The electrode materials of EDLCs supercapacitors mainly include nano‐carbon materials (carbon nanotubes, [18] graphene, [19,20] MXene, [21,22] activated carbon) [23] . The electrode materials of pseudocapacitors mainly include transition metal oxides/sulfides (Mn 3 O 4 , [10] MnO 2 , [24] NiO, CoS 2 ) , [25] conductive polymers (PANI, [26] PPy, [27] PEDOT:PSS) [28] and composite nanomaterials [9,13,29] . The capacitive and mechanical properties of electrode materials are critical to the performance of wearable supercapacitors.…”

Section: Structures and Materials Of Wearable Supercapacitorsmentioning

confidence: 99%

“…At present, gel electrolytes can be divided into three types: hydrogel electrolytes, organic solvent gel electrolytes and ionic liquid quasi‐gel electrolytes. Hydrogel electrolytes usually include polyvinyl alcohol (PVA)‐ acid/alkali/salt systems (such as PVA/H 3 PO 4 , [6] PVA/H 2 SO 4 , [19] PVA/KOH, [25] or PVA/LiCl [29] ), cellulose/KOH, [23] or Vinyl silica nanoparticles‐polyacrylic acid/H 3 PO 4 [9] . Hydrogel electrolyte has high safety, but the operating voltage window is low, which limits the energy density of wearable supercapacitors.…”

Section: Structures and Materials Of Wearable Supercapacitorsmentioning

confidence: 99%

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Recent Progress and Application Challenges of Wearable Supercapacitors

Ren

Chen

2021

Batteries & Supercaps

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The rapid development of wearable electronics has accelerated the development of wearable energy storage devices. Wearable supercapacitors have aroused widely interest due to their large power density. However, there are still many challenges in the practical application of wearable supercapacitors. This paper summarizes the structure, working mechanism, materials and key parameters of wearable supercapacitors. And we reviewed the challenges of wearable supercapacitors in practical applications, namely safety, mechanical adaptability, self‐charging capability, environmental tolerance, and multifunction. Finally, these challenges are summarized and prospected. We hope to inspire some work to solve the practical application challenges of wearable supercapacitors.

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“…All-solid-state electrolyte plays an important role in determining the performance of the supercapacitor [ 10 , 11 , 12 , 13 , 14 ]. Polyvinyl alcohol (PVA) based hydrogel electrolytes were extensively studied due to their environment-friendly, easily accessible, and inexpensive attributes [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Flexible Supercapacitors Based on Graphene/Boron Nitride Nanosheets Electrodes and PVA/PEI Gel Electrolytes

Wang

Liu

et al. 2021

Materials

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All-solid-state supercapacitors have gained increasing attention as wearable energy storage devices, partially due to their flexible, safe, and lightweight natures. However, their electrochemical performances are largely hampered by the low flexibility and durability of current polyvinyl alcohol (PVA) based electrolytes. Herein, a novel polyvinyl alcohol-polyethyleneimine (PVA-PEI) based, conductive and elastic hydrogel was devised as an all-in-one electrolyte platform for wearable supercapacitor (WSC). For proof-of-concept, we assembled all-solid-state supercapacitors based on boron nitride nanosheets (BNNS) intercalated graphene electrodes and PVA-PEI based gel electrolyte. Furthermore, by varying the electrolyte ions, we observed synergistic effects between the hydrogel and the electrode materials when KOH was used as electrolyte ions, as the Graphene/BNNS@PVA-PEI-KOH WSCs exhibited a significantly improved areal capacitance of 0.35 F/cm2 and a smaller ESR of 6.02 ohm/cm2. Moreover, due to the high flexibility and durability of the PVA-PEI hydrogel electrolyte, the developed WSCs behave excellent flexibility and cycling stability under different bending states and after 5000 cycles. Therefore, the conductive, yet elastic, PVA-PEI hydrogel represents an attractive electrolyte platform for WSC, and the Graphene/BNNS@PVA-PEI-KOH WSCs shows broad potentials in powering wearable electronic devices.

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A multifunctional interface design on cellulose substrate enables high performance flexible all-solid-state supercapacitors

Cited by 53 publications

References 42 publications

Lignocellulosic Biomass-Derived Carbon Electrodes for Flexible Supercapacitors: An Overview

Lignocellulosic Biomass-Derived Carbon Electrodes for Flexible Supercapacitors: An Overview

Recent Progress and Application Challenges of Wearable Supercapacitors

Flexible Supercapacitors Based on Graphene/Boron Nitride Nanosheets Electrodes and PVA/PEI Gel Electrolytes

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