Tackling the Challenges of Enzymatic (Bio)Fuel Cells

Chemical Reviews, Journal Year: 2019, Volume and Issue: 119(16), P. 9509 - 9558

Published: June 25, 2019

The ever-increasing demands for clean and sustainable energy sources combined with rapid advances in biointegrated portable or implantable electronic devices have stimulated intensive research activities enzymatic (bio)fuel cells (EFCs). use of renewable biocatalysts, the utilization abundant green, safe, high density fuels, together capability working at modest biocompatible conditions make EFCs promising as next generation alternative power sources. However, main challenges (low density, relatively low poor operational stability, limited voltage output) hinder future applications EFCs. This review aims exploring underlying mechanism providing possible practical strategies, methodologies insights to tackle these issues. First, this summarizes approaches achieving densities EFCs, particularly, employing enzyme cascades deep/complete oxidation fuels. Second, strategies increasing including activities, facilitating electron transfers, nanomaterials, designing more efficient enzyme-electrode interfaces, are described. potential EFCs/(super)capacitor combination is discussed. Third, evaluates a range improving stability different immobilization approaches, tuning properties, protective matrixes, using microbial surface displaying enzymes. Fourth, improvement cell highlighted. Finally, developments prospective on envisioned.

Language: Английский

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Recent progress, challenges, and prospects of fully integrated mobile and wearable point-of-care testing systems for self-testing

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(6), P. 1812 - 1866

Published: Jan. 1, 2020

POCT systems have been developed toward new form factors as wearable and mobile POCT. New advancements in these may provide self-testing capability for on-the-spot diagnosis monitoring to facilitate rapid treatment decisions.

Language: Английский

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Shape adaptable and highly resilient 3D braided triboelectric nanogenerators as e-textiles for power and sensing

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: June 8, 2020

Abstract Combining traditional textiles with triboelectric nanogenerators (TENGs) gives birth to self-powered electronic (e-textiles). However, there are two bottlenecks in their widespread application, low power output and poor sensing capability. Herein, by means of the three-dimensional five-directional braided (3DB) structure, a TENG-based e-textile features high flexibility, shape adaptability, structural integrity, cyclic washability, superior mechanical stability, is designed for sensing. Due spatial frame-column structure formed between outer yarn inner axial yarn, 3DB-TENG also endowed compression resilience, enhanced output, improved pressure sensitivity, vibrational energy harvesting ability, which can miniature wearable electronics respond tiny weight variations. Furthermore, an intelligent shoe identity recognition carpet demonstrated verify its performance. This study hopes provide new design concept high-performance textile-based TENGs expand application scope human-machine interfacing.

Language: Английский

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Flexible self-charging power sources

Nature Reviews Materials, Journal Year: 2022, Volume and Issue: 7(11), P. 870 - 886

Published: May 12, 2022

Language: Английский

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Flexible Electronics Based on Micro/Nanostructured Paper

Advanced Materials, Journal Year: 2018, Volume and Issue: 30(51)

Published: July 31, 2018

Abstract Over the past several years, a new surge of interest in paper electronics has arisen due to numerous merits simple micro/nanostructured substrates. Herein, latest advances and principal issues design fabrication paper‐based flexible are highlighted. Following an introduction fascinating properties matrixes, construction substrates from diverse functional materials for their underlying principles described. Then, notable progress related development versatile electronic devices is discussed. Finally, future opportunities remaining challenges examined. It envisioned that more concepts, working principles, advanced papermaking techniques will be developed near functionalization paper, paving way mass production commercial applications devices.

Language: Английский

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Fundamentals, Applications, and Future Directions of Bioelectrocatalysis

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(23), P. 12903 - 12993

Published: Oct. 14, 2020

Bioelectrocatalysis is an interdisciplinary research field combining biocatalysis and electrocatalysis via the utilization of materials derived from biological systems as catalysts to catalyze redox reactions occurring at electrode. synergistically couples merits both electrocatalysis. The advantages include high activity, selectivity, wide substrate scope, mild reaction conditions. possible renewable electricity electron source energy conversion efficiency. These properties are integrated achieve selective biosensing, efficient conversion, production diverse products. This review seeks systematically comprehensively detail fundamentals, analyze existing problems, summarize development status applications, look toward future directions bioelectrocatalysis. First, structure, function, modification bioelectrocatalysts discussed. Second, essentials bioelectrocatalytic systems, including transfer mechanisms, electrode materials, medium, described. Third, application bioelectrocatalysis in fields biosensors, fuel cells, solar catalytic mechanism studies, bioelectrosyntheses high-value chemicals summarized. Finally, developments a perspective on suggested.

Language: Английский

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Advances in nanomaterials for electrochromic devices

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(23), P. 8687 - 8720

Published: Jan. 1, 2020

Electrochromic devices (ECDs) have been regarded as promising candidates for energy-saving smart windows, next-generation displays and wearable electronics due to their significant benefits of simple adjustable structures, low power consumption, flexible stretchable features, eye-friendly modes displays. However, there are many existing issues waiting be solved such durability, reversibility inadequate switching performances. These insurmountable technical bottlenecks significantly slow down the commercialization ECDs. Nanomaterials with superior active reaction surface area played indispensable roles in optimizing heterogeneous electron transfer homogeneous ion ECDs other optoelectronic devices. In recent years, joint efforts various outstanding research teams, new kinds methods nanomaterials fabricate excellent performances rapidly developing. This review highlights latest exciting results regarding design application unique each layer Meanwhile, mechanisms, features preparation reported improve electrochromic properties discussed detail. addition, remaining challenges corresponding strategies this field also proposed. Hopefully, can inspire more researchers enrich related fields overcome faced barriers by innovative means promote industrialization technologies.

Language: Английский

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O₂Reduction in Enzymatic Biofuel Cells

Chemical Reviews, Journal Year: 2017, Volume and Issue: 118(5), P. 2392 - 2468

Published: Sept. 20, 2017

Catalytic four-electron reduction of O2 to water is one the most extensively studied electrochemical reactions due exceptional availability and high O2/H2O redox potential, which may in particular allow highly energetic fuel cells. To circumvent use expensive inefficient Pt catalysts, multicopper oxidases (MCOs) have been envisioned because they provide efficient with almost no overpotential. MCOs used elaborate enzymatic biofuel cells (EBFCs), a subclass enzymes replace conventional catalysts. A glucose/O2 EBFC, glucose oxidizing anode reducing MCO cathode, could become vivo source electricity that would power sometimes future integrated medical devices. This review covers challenges advances electrochemistry their EBFCs emphasis on last 6 years. First basic features are presented. Clues provided by understand these how behave once connected at electrodes described. Progresses realized development biocathodes for relying both direct mediated electron transfer mechanism then discussed. Some implementations finally

Language: Английский

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Living and Conducting: Coating Individual Bacterial Cells with In Situ Formed Polypyrrole

Angewandte Chemie International Edition, Journal Year: 2017, Volume and Issue: 56(35), P. 10516 - 10520

Published: June 7, 2017

Coating individual bacterial cells with conjugated polymers to endow them more functionalities is highly desirable. Here, we developed an in situ polymerization method coat polypyrrole on the surface of Shewanella oneidensis MR-1, Escherichia coli, Ochrobacterium anthropic or Streptococcus thermophilus. All these as-coated from different species displayed enhanced conductivities without affecting viability, suggesting generality our coating method. Because their excellent conductivity, employed polypyrrole-coated MR-1 as anode microbial fuel (MFCs) and found that not only direct contact-based extracellular electron transfer dramatically enhanced, but also viability MFCs improved. Our results indicate bacteria could be a promising strategy enhance performance enrich functionalities.

Language: Английский

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Development and modification of materials to build cost-effective anodes for microbial fuel cells (MFCs): An overview

Biochemical Engineering Journal, Journal Year: 2020, Volume and Issue: 164, P. 107779 - 107779

Published: Sept. 3, 2020

Language: Английский

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