A flexible and self-healing supercapacitor based on activated carbon cloth/MnO2 composite

Fan, Zewen; Ren, Jing; Zhang, Fa; Gu, Tingyue; Zhang, Shaofei; Ren, Rui-Peng; Lv, Yongkang

doi:10.1007/s10853-021-06644-0

Cited by 22 publications

(13 citation statements)

References 48 publications

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“…The separator should have maximum porosity and electrolyte absorption to facilitate appropriate electrolyte ions to the electrode. [42][43][44] In order to ensure the effective operation of a supercapacitor, it is required to make an appropriate selection of separators in order to provide sufficient energy density, power density, self-discharge, and maximum life cycle while maintaining the lowest possible cost of operation. A good separator possesses the following characteristics: adequate ionic conductivity, ideal thickness and porosity, proper interfacial contact, low cost, chemical stability, and electrolyte retention ability.…”

Section: Separatorsmentioning

confidence: 99%

“…When the concentration of ions and electrodes in an electrolyte is lowered over time, a decrease in conductivity is seen, as is an increase in the internal resistance of the electrolyte. [43,58] On the other hand, newly recommended electrolytes such as, gel electrolytes (i. e., PVA/KOH and PVA/H 2 SO 4 ) and ionic liquids (i. e., 1-ethyl-3-methyl-(EMIM) and 1-butyl-3-methyl-(BMIM)) are likely to overcome this problem. Increased operating voltage for supercapacitors is another issue that must be addressed, and this is a difficult process.…”

Section: Hybrid Supercapacitorsmentioning

confidence: 99%

“…Bendable separators with great mechanical strength are required for flexible electronic devices. The separator should have maximum porosity and electrolyte absorption to facilitate appropriate electrolyte ions to the electrode [42–44] …”

Section: Components and Types Of Supercapacitorsmentioning

confidence: 99%

“…Constant self‐discharge of a capacitor is a serious problem that affects all capacitors. When the concentration of ions and electrodes in an electrolyte is lowered over time, a decrease in conductivity is seen, as is an increase in the internal resistance of the electrolyte [43,58] . On the other hand, newly recommended electrolytes such as, gel electrolytes (i. e., PVA/KOH and PVA/H 2 SO 4 ) and ionic liquids (i. e., 1‐ethyl‐3‐methyl‐ (EMIM) and 1‐butyl‐3‐methyl‐ (BMIM)) are likely to overcome this problem.…”

Section: Components and Types Of Supercapacitorsmentioning

confidence: 99%

See 3 more Smart Citations

Construction Building Materials as a Potential for Structural Supercapacitor Applications

Basha

Shah

Ahmad

et al. 2022

The Chemical Record

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Emerging demands to achieve zero carbon emissions and develop renewable energy resources necessitate the development of appropriate energy storage systems. To achieve this, several alternatives to conventional energy storage devices, such as Li‐ion batteries or capacitors to more sustainable and scalable energy storage systems, are being explored. Supercapacitors, possess unique characteristics that include high power, long life, and environmental‐friendly design. They may be used to bridge the energy‐power gap between typical capacitors and fuel cells/batteries. Recently, structural supercapacitors being capable of storing electrochemical energy besides bearing mechanical load have caught the attention of researchers. As such, efforts have been made worldwide to study both the fundamental and applied aspects of structural supercapacitors. Further, the possibility of using construction materials for interdisciplinary applications is being studied because they are relatively cheap and easily available. Thus, construction materials can be considered as potential candidates for the development of structural supercapacitors. Herein an overview on the use of construction materials, such as Portland cement concrete, geopolymer concrete, and bricks, as a component of structural supercapacitors has been presented.

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Section: Separatorsmentioning

confidence: 99%

Section: Hybrid Supercapacitorsmentioning

confidence: 99%

Section: Components and Types Of Supercapacitorsmentioning

confidence: 99%

Section: Components and Types Of Supercapacitorsmentioning

confidence: 99%

See 2 more Smart Citations

Construction Building Materials as a Potential for Structural Supercapacitor Applications

Basha

Shah

Ahmad

et al. 2022

The Chemical Record

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show abstract

“…For example, Huang et al synthesized supercapacitors that could withstand a tensile strain of 608% based on cross-linked poly(vinyl alcohol) (PVA) and poly (acrylamide/acrylic acid) (P(AA-co-AM)) double network hydrogels. According to Fan et al., a flexible supercapacitor was prepared by a self-healing PVA-H 2 SO 4 electrolyte, which exhibited excellent flexibility. However, these hydrogel electrolyte-based supercapacitors exhibit a smaller potential window around 1 V, which limits the energy density according to “ E = 0.5 CV 2 ”.…”

Section: Introductionmentioning

confidence: 99%

Flexible Wood Enhanced Poly(acrylic acid-co-acrylamide)/Quaternized Gelatin Hydrogel Electrolytes for High-Energy-Density Supercapacitors

Gao

Wei

et al. 2023

ACS Appl. Mater. Interfaces

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Hydrogels with good flexibility and strong hydrophilicity can be candidates for excellent flexible electrolyte materials. However, the poor structural stability, uncontrollable swelling, and lower potential window of hydrogel electrolytes need to be improved. This work combined quaternized gelatin with cross-linked poly(acrylic acid-co-acrylamide) to form a semiinterpenetrating network and gelatinized in situ in a flexible porous wood skeleton. The flexible wood (FW) skeleton enhances the hydrogel and limits the swelling of the hydrogel. In addition, quaternary ammonium groups and FW act synergistically to provide the composite hydrogel electrolyte with a high ionic conductivity of 5.57 × 10 −2 S cm −1 . The composite hydrogel electrolyte can enable the flexible supercapacitor to operate safely in a potential window of 0−2 V. The optimized supercapacitor has a high specific capacitance of 286.74 F g −1 and provides an outstanding energy density of 39.09 W h kg −1 . The flexible supercapacitor shows a capacitance retention of up to 94.6% after 10,000 charge−discharge cycles, indicating dramatic cycling stability. Simultaneously, a capacitance retention of nearly 90% can be maintained by the flexible supercapacitor after 180°bends for 1000 times. A viable idea for developing high-performance hydrogel electrolytes and flexible supercapacitors is provided in this research.

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Recent Trends in Supercapacitor Research: Sustainability in Energy and Materials

Chernysheva,

Smirnova,

Ananikov

2024

ChemSusChem

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Supercapacitors (SCs) have emerged as critical components in applications ranging from transport to wearable electronics due to their rapid charge‐discharge cycles, high power density, and reliability. This review offers an analysis of recent strides in supercapacitor research, emphasizing pivotal developments in sustainability, electrode materials, electrolytes, and 'smart SCs' designed for modern microelectronics with attributes such as flexibility, stretchability, and biocompatibility. Central to this discourse are two dominant electrode materials: carbon materials (CMs), primarily in Electric Double Layer Capacitors (EDLCs), and pseudocapacitive materials, involving oxides/hydroxides, chalcogenides, metal‐organic frameworks, conductive polymers and metal nitrides such as MXene. Despite EDLCs' historical use, challenges such as low energy density persist, with heteroatom introduction into the carbon lattice posed as a solution. Concurrently, pseudocapacitive materials dominate recent studies, with efficiency enhancement strategies, such as the creation of hybrids based on different types of materials, surface structural engineering and doping, under exploration. Emphasis is given to smart SCs with novel attributes such as self‐charging, self‐healing, biocompatibility, and environmentally conscious designs. In summary, the article underscores the drive in sustainable supercapacitor research to achieve high energy and power density, steering towards SCs that are efficient and versatile and involving bioderived/biocompatible SC materials.

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A flexible and self-healing supercapacitor based on activated carbon cloth/MnO2 composite

Cited by 22 publications

References 48 publications

Construction Building Materials as a Potential for Structural Supercapacitor Applications

Construction Building Materials as a Potential for Structural Supercapacitor Applications

Flexible Wood Enhanced Poly(acrylic acid-co-acrylamide)/Quaternized Gelatin Hydrogel Electrolytes for High-Energy-Density Supercapacitors

Recent Trends in Supercapacitor Research: Sustainability in Energy and Materials

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