Fabrication of cellulose acetate-chitosan based flexible 3D scaffold-like porous membrane for supercapacitor applications with PVA gel electrolyte

Aswathy, N. R.; Palai, Akshaya K.; Ramadoss, Ananthakumar; Mohanty, Smita; Nayak, Sanjay K.

doi:10.1007/s10570-020-03030-y

Cited by 31 publications

(15 citation statements)

References 48 publications

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“…The highest power density achieved was 40 mW cm −2 . [115] To augment the environment-friendly nature of solid electrolytes without compromising their desirable characteristics, researchers are now focusing on the conversion of biowaste into novel supercapacitor electrolytes. Na et al fabricated a green solid-state supercapacitor with NaCl-based egg white gel electrolyte, rice husk-derived activated carbon electrodes, silver paper as current collector, and eggshell membrane ( Figure 6).…”

Section: Solid Electrolytes For Supercapacitorsmentioning

confidence: 99%

“…Therefore, of late, due emphasis has also been laid on the evolution of eco-friendly supercapacitors. Benign materials retrieved from carbon-rich agricultural and food biowaste, [9,105,115,116] industrial waste, [76][77][78][79] paper, [74,80,81] and cotton [82] have been used in their fabrication. Additionally, carbon acquired from discarded polymers [83][84][85][86][87][88][89][90][91][92][93][94][95] as well as valuable metals and metal composites recuperated from electronic waste including spent batteries [96][97][98][99][100][101][102] have been utilized in the preparation of supercapacitor electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…[103][104][105][106][107][108][109][110][111][112][113][114][115][116][117][118][119] Gelated ubiquitous liquid electrolytes have also been successfully tested on supercapacitors to overcome risks in packaging, portability, and leakage. [109][110][111][112][113][114][115] Besides, to aid to their environment-friendly characteristic, several "green" materials such as egg white, [116] potato starch, [117,118] and rice starch, [119] processed through cost-effective strategies have been implemented as potential electrolytes in supercapacitors. Although recycling electrochemical devices is a common practice in many countries, supercapacitors are yet to gain attention in this regard.…”

Section: Introductionmentioning

confidence: 99%

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Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Dutta

Mahanta

Banerjee

2020

Advanced Sustainable Systems

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Supercapacitors store electrical energy on the basis of electrostatic attraction between opposite charges as a result of the formation of an electric double layer (EDL) at the electrolyte/electrode interface. Carbon-derived materials are commonly used to fabricate supercapacitor electrodes owing to their high electrical conductivity, high capacitance, excellent porosity, good electrochemical stability, and large specific surface area. [131-136] Predominantly, these materials include carbon nanotubes (CNTs), graphene, carbon spheres, hollow carbon spheres, carbon nanoparticles (CNPs), etc. [62,137-145] Nevertheless, they fail to demonstrate the desirable performance in practical applications after a certain threshold owing to their short durability and low energy density. Although, metal-organic frameworks (MOFs) have proven to be better electrode candidates in certain aspects, [142,143,146-148] however, these materials incur high cost, low yield of porous carbon, high consumption of metallic nitrate, [62] and hence higher waste generation. Due to the rising concerns of waste production and its management and hence the need for sustainable and cheap resources, reusing and/or converting waste from various sources such as industrial, agricultural, food, and spent electronic devices efficiently into usable carbon has attracted much interest since recently.

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Section: Solid Electrolytes For Supercapacitorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Dutta

Mahanta

Banerjee

2020

Advanced Sustainable Systems

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“…The specific area capacitance C sa (mF cm −2 ) of each electrode was determined from CV results using Equation ) and the GCD results using Equation ),

C_{sa} = \frac{\int italicIdV}{italicAv normalΔ V},

C_{sa} = \frac{i \times normalΔ t}{A normalΔ V},

where the ∫ IdV term refers to the area surrounding the discharge curve (cathodic) backward scan, A is the total area of an electrode, ν is the scan rate (V s −1 ), Δ t is the discharge time (s), i (A) is the applied current and Δ V is the voltage window. The energy density (E, Wh cm −2 ) and power density (P, W cm −2 ) of the Co‐BC90 electrode were calculated from the GCD method using Equations ) and (), respectively 28

E ((), \frac{Wh}{{cm}^{2}}) = \frac{C_{sa} {(Δ V)}^{2}}{7.2},

normalP ((), \frac{normalW}{{cm}^{2}}) = \frac{E \times 3600}{normalΔ t}

…”

Section: Methodsmentioning

confidence: 99%

“…The energy density (E, Wh cm −2 ) and power density (P, W cm −2 ) of the Co-BC90 electrode were calculated from the GCD method using Equations 3and 4, respectively. 28…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Flexible supercapacitors based on mesoporous nanocrystalline cobalt ammonium phosphates and bacterial cellulose composite electrode

2020

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Summary A flexible electrode of NH4CoPO4 · H2O composite bacterial cellulose (Co‐BC) has been successfully prepared via a hydrothermal method. A bacterial cellulose (BC) membrane was used as a host matrix for nanocrystalline (NC) NH4CoPO4 · H2O. The preparation process included anchoring nanocrystalline NH4CoPO4 · H2O on BC nanofibers with an intrinsic 3D network structure. X‐ray diffraction (XRD) results indicated the orthorhombic structure of the NH4CoPO4 · H2O NC within the Pmn21 space group and BC of a Type‐I structure. FE‐SEM images revealed microplate‐like NH4CoPO4 · H2O structures on BC nanofibers. The a three‐electrode system of all samples were studied for their electrochemical properties by CV, charge/discharge and EIS estimations in a 3 M KOH electrolyte. A maximal specific area capacitance of 158.5 mF cm−2 (43.3 F g−1) was obtained at a current density of 0.25 mA cm−2 using a Co‐BC90 electrode. Moreover, this sample show an excellent capacitance retention of 99% after a 3000 cycle at 1 mA cm−2 current density.

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A comprehensive review on batteries and supercapacitors: Development and challenges since their inception

et al. 2022

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The chemistry underlying the storage phenomena in batteries and supercapacitors has been known to mankind for quite some time now. Nonetheless, a holistic apprehension of their rudimentary characteristics throughout their lifetime and beyond is imperative to accentuate their maximum potential. Although numerous reviews have addressed many of the facts individually, a consolidated report on the associated history, challenges, and environmental aspects considering the cutting‐edge advancements in this field is missing. This review gives a comprehensive insight into the two technologies by drawing a detailed comparison between their governing attributes and potential challenges. First, a brief history of batteries and supercapacitors along with their classifications based on materials and corresponding working mechanisms are delineated. Thereafter, some of the inexorable losses restricting the performance of these systems from reaching their theoretical limits are outlined. A picture of the significance of theoretical modeling of batteries and supercapacitors highlighting the associated challenges in the same is drawn. Furthermore, their fates after retirement as well as their scopes in the future based on their current trends are reported in the ensuing sections. Alongside detailed tutorial background of energy storage literature, this review compares different energy storage devices and the latest developments in this field.

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Fabrication of cellulose acetate-chitosan based flexible 3D scaffold-like porous membrane for supercapacitor applications with PVA gel electrolyte

Cited by 31 publications

References 48 publications

Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Supercapacitors in the Light of Solid Waste and Energy Management: A Review

Flexible supercapacitors based on mesoporous nanocrystalline cobalt ammonium phosphates and bacterial cellulose composite electrode

A comprehensive review on batteries and supercapacitors: Development and challenges since their inception

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