Self‐Charging Electrochemical Biocapacitor

Pankratov, Dmitry; Blum, Zoltan; Suyatin, Dmitry; Popov, Vladimir O.; Shleev, Sergey

doi:10.1002/celc.201300142

Cited by 88 publications

(70 citation statements)

References 22 publications

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“…A self-powered sensor for ascorbic acid has been developed with Prussian blue (PB) as an electrochromic display 28 . A selfcharging supercapacitor based on mediated glucose oxidase has also been reported recently 29 . To the best of our knowledge there is no research published on a self-powered cholesterol biosensor.…”

Section: Introductionmentioning

confidence: 99%

Cholesterol Self-Powered Biosensor

et al. 2014

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Monitoring the cholesterol level is of great importance, especially for people with high risk of developing heart disease. Here we report on reagentless cholesterol detection in human plasma with a novel single-enzyme, membrane-free, self-powered biosensor, in which both cathodic and anodic bioelectrocatalytic reactions are powered by the same substrate. Cholesterol oxidase was immobilised in a sol-gel matrix on both the cathode and the anode. Hydrogen peroxide, a product of the enzymatic conversion of cholesterol, was electrocatalytically reduced, by the use of Prussian blue, at the cathode. In parallel, cholesterol oxidation catalysed by mediated cholesterol oxidase occurred at the anode. The analytical performance was assessed for both electrode systems separately. The combination of the two electrodes, formed on high surface-area carbon cloth electrodes, resulted in a self-powered biosensor with enhanced sensitivity (26.0 mA M -1 cm -2 ), compared to either of the two individual electrodes, and a dynamic range up to 4.1 mM cholesterol.Reagentless cholesterol detection with both electrochemical systems and with the self-powered biosensor was performed and the results were compared with the standard method of colorimetric cholesterol quantification.

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Section: Introductionmentioning

confidence: 99%

Cholesterol Self-Powered Biosensor

et al. 2014

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“…Reproduced with permission. [182] www.MaterialsViews.com www.advenergymat.de materials or their artificial derivatives deserves to be continued to obtain versatile highly adhesive binders to be applied with different active materials. [30] In addition, smart energy-storage devices inspired by nature are newly-emerged, and the current ones have been developed in prototypes for concept demonstration.…”

Section: Discussionmentioning

confidence: 98%

“…It worked as an integrated device with double-layer capacitor module and enzymatic fuel cell module (Figure 11a). [182,183] Graphite foil (GF) with a thickness of ca. 2 mm was adopted as the conducting substrate, capacitive and charging materials were located on different sides of the substrate to form a singular electrode.…”

Section: Other Energy-storage Devicesmentioning

confidence: 99%

Nature‐Inspired Electrochemical Energy‐Storage Materials and Devices

Wang

Yang

Guo

2016

Advanced Energy Materials

152

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Nature-inspired strategies have been proposed recently as novel and effective routines to address these challenges.(1) Specifically, the limited availability of mineral resources could hardly satisfy the booming requirement and subsequent production quantity of energystorage devices for long time, and will necessarily lead to their increasing price. [15,16] Moreover, the non-biodegradability of current energy-storage devices after their service lifetime will bring about tremendous electronic garbage. Thus, renewable, cheap and environment-friendly energy-storage related materials are greatly desired to substitute current components. [12,[17][18][19][20][21][22][23][24][25][26] In nature, its energy conversion and storage systems have been evolved for billions of years, and spawned highly efficient and well suited cellular respiration machineries in living organisms for external energy assimilation, metabolism and distribution. [27] In recent years, inspirations have been taken from nature to fabricate biomolecule-based electrode materials from renewable biomass. [28][29][30][31][32] For example, inspired by the electron shuttles functioning in extracellular electron transfer via reversible redox-cycling, man-made electrode materials with similar active functional groups have been explored. [33,34] In our newly reported work, supercapacitor employing redoxactive biomolecule as the faradic-type active material could even obtain a higher energy density than those of previous transition-metal-based supercapacitors. [35] (2) Another issue encountered by current energy-storage system arises from the laborious preparation processes of their energy-storage materials which usually adopt extreme conditions. In biological systems, assembly of complicated micro-organelles are precisely controlled with the aid of biotemplates. By mimicking the bio-assembly processes or utilizing appropriate biotemplates, facile preparation of energy-storage materials in mild conditions has been achieved. [36][37][38][39][40][41][42][43][44] (3) In rechargeable batteries and supercapacitors, the architecture of active materials always determines their cycle life and rate performance. [45][46][47][48] While the abundant examples of natural structures with known stableness, geometry configuration, surface wettability and mechanical property provide clues for rational design of nanostructured active materials with desired performance. [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63] (4) What's more, nature-inspired routines are also useful for rational design of ideal binders Currently, tremendous efforts are being devoted to develop high-performance electrochemical energy-storage materials and devices. Conventional electrochemical energy-storage systems are confronted with great challenges to achieve high energy density, long cycle-life, excellent biocompatibility and environmental friendliness. The biological energy metabolism and storage systems have appealing merits of high efficiency, sophisticated regulation, clean and renewabil...

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“…Recognizing the problems with a discontinuous power supply, conventional capacitors were actually already inbuilt into electronic contact lenses with OTA power delivery [6,11]. In its present embodiment, the charge-storing FC, or alternatively, the self-charging capacitor, is built from high-end nanomaterials in a monocoque fashion, that is, the FC electrodes also serve as the capacitor conductors [33,34]. By design, hybrid capacitance, that is, double layer as well as electrochemical charging of the capacitor substructure, is relied on, thus enabling the storage of significant amounts of electric energy.…”

Section: Expert Commentarymentioning

confidence: 99%