Fuel-independent and membrane-less self-charging biosupercapacitor

Pankratov, Dmitry; Shen, Fei; Ortiz, Roberto; Toscano, Miguel D.; Thormann, Esben; Zhang, Jingdong; Gorton, Lo; Chi, Qijin

doi:10.1039/c8cc06688d

Cited by 17 publications

(9 citation statements)

References 31 publications

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“…In the absence of PQQ-GDH, the cyt c-GP electrode displayed a higher OCP of 0.063 V and a gradually increasing OCP during the charge/discharge cycling (Supplementary Figure S2). A similar phenomenon was observed in a recent work regarding a self-charging biosupercapacitor employing a myoglobin-modified electrode [37]. thylakoid membranes-charging/gold nanoparticles-storing patterns, was successfully applied in the construction of hybrid bioelectrochemical systems [5,9].…”

Section: Accepted Manuscriptsupporting

confidence: 75%

Supercapacitor/biofuel cell hybrid device employing biomolecules for energy conversion and charge storage

Shen

Pankratov

Pankratova

et al. 2019

Bioelectrochemistry

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We report on a hybrid bioelectrochemical system that integrates an energy converting part, viz. a glucose/oxygen enzymatic fuel cell, with a charge-storing component, in which the redox features of the immobilized redox protein cytochrome c (cyt c) were utilized. Bilirubin oxidase and pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH) were employed as the biocatalysts for dioxygen reduction and glucose oxidation, respectively. A bi-protein PQQ-GDH/cyt c signal chain was created that facilitates electron transfer between the enzyme and the electrode surface. The assembled supercapacitor/biofuel cell hybrid biodevice displays a 15 times higher power density tested in the pulse mode compared to the performance achieved from the continuously operating regime (4.5 and 0.3 μW cm -2 , respectively) with an 80% residual activity after 50 charge/discharge pulses. This can be considered as a notable step forward in the field of glucose/oxygen membrane-free, biocompatible hybrid power sources.

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Section: Accepted Manuscriptsupporting

confidence: 75%

Supercapacitor/biofuel cell hybrid device employing biomolecules for energy conversion and charge storage

Shen

Pankratov

Pankratova

et al. 2019

Bioelectrochemistry

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“…To suppress fast-self-discharge, a proton exchange separator (PES) can be employed 18 , 30 , 31 . The PES acts as an active barrier for the generated protons at the bioanode preventing the migration towards the biocathode, thus minimizing faradaic side reactions and leading to reduced self-discharge 19 , 20 .…”

Section: Resultsmentioning

confidence: 99%

“…In addition, these complex biological reactions release energy which nBSCs can harness to compensate for any self-discharge [10][11][12][13] . Much effort has gone into exploring and understanding the intricate pathways of this bioenhancement and self-discharge behaviour [14][15][16][17][18] , but the side redox reactions leading to selfdischarge are still true challenges. The low working potential (0.3-0.8 V) and large size (>3 cubic millimetres) of state-of-theart BSCs [14][15][16][17][18] do the rest to deny these devices access to various small spaces in the human vascular system.…”

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confidence: 99%

Nano-biosupercapacitors enable autarkic sensor operation in blood

Lee

Bandari

et al. 2021

Nat Commun

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Today’s smallest energy storage devices for in-vivo applications are larger than 3 mm3 and lack the ability to continuously drive the complex functions of smart dust electronic and microrobotic systems. Here, we create a tubular biosupercapacitor occupying a mere volume of 1/1000 mm3 (=1 nanoliter), yet delivering up to 1.6 V in blood. The tubular geometry of this nano-biosupercapacitor provides efficient self-protection against external forces from pulsating blood or muscle contraction. Redox enzymes and living cells, naturally present in blood boost the performance of the device by 40% and help to solve the self-discharging problem persistently encountered by miniaturized supercapacitors. At full capacity, the nano-biosupercapacitors drive a complex integrated sensor system to measure the pH-value in blood. This demonstration opens up opportunities for next generation intravascular implants and microrobotic systems operating in hard-to-reach small spaces deep inside the human body.

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“…The biofluids serve as the electrolytes for both the SC modules and BFC modules. Double layer capacitive materials, such as CNTs 93 and porous gold, 94,95 and pseudocapacitive polymers, including conductive polymers (polypyrrole and polyaniline), 96,97 redox polymers, 98–103 and MnO 2 , 104 have been explored to endow traditional BFCs with the capability to store energy. The hybrid device could release electricity in a much higher power density than BFCs resulting from the fast charge‐discharge rate of SCs.…”

Section: Human‐body Biofluids Charged Energy Storage Devicesmentioning

confidence: 99%

Sustainable wearable energy storage devices self‐charged by human‐body bioenergy

Chen

Lee

2021

SusMat

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Charging wearable energy storage devices with bioenergy from human‐body motions, biofluids, and body heat holds great potential to construct self‐powered body‐worn electronics, especially considering the ceaseless nature of human metabolic activities. To bridge the gap between human‐body bioenergy and storage of energy, wearable triboelectric/piezoelectric nanogenerators (TENGs/PENGs), biofuel cells (BFCs), thermoelectric generators (TEGs) have been designed to harvest energy from body‐motions, biofluids, and body heat, respectively. Researchers have explored various strategies using bioenergy harvesters to charge wearable supercapacitors and batteries to relieve or even fully eliminate the recharging process from external power stations, thus, making wearable electronics more sustainable, autonomous, and user friendly. In this article, we review the advances in the design of sustainable energy storage devices charged by human‐body energy harvesters. The progress in multifunctional wearable energy storage devices that cater to the easy integration with human‐body energy harvesters will be summarized. Then, the focus is laid on the integrating strategies (single‐cell strategy and separated‐cell strategy), device design, materials selection, and characteristics of different self‐charging human‐body energy harvesting‐storage systems. Finally, the challenges that impede the wide application of human‐body energy harvesters charged supercapacitors/batteries and prospects will be discussed both from materials and structural design aspects.

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Fuel-independent and membrane-less self-charging biosupercapacitor

Abstract: A fuel-independent self-charging biosupercapacitor consisting of an enzymatic biocathode and a bioelectrode employing supercapacitive features of immobilized myoglobin is described.

Cited by 17 publications

References 31 publications

Supercapacitor/biofuel cell hybrid device employing biomolecules for energy conversion and charge storage

Supercapacitor/biofuel cell hybrid device employing biomolecules for energy conversion and charge storage

Nano-biosupercapacitors enable autarkic sensor operation in blood

Sustainable wearable energy storage devices self‐charged by human‐body bioenergy

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