Patch-Type Wearable Enzymatic Lactate Biofuel Cell With Carbon Cloth Bioelectrodes for Energy Harvesting From Human Sweat

Jayapiriya, U S; Goel, Sanket

doi:10.1109/jflex.2022.3157276

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…The hydrophobic carbon cloth (0.25 cm 2 ) was plasma treated for 1 minute [15] to induce hydrophilic groups on the electrode surface, which will aid in the absorption of the cobalt oxide (II)-reduced Graphene oxide (Co 3 O 4 -rGO) composite. The anode ink was prepared by dispersing 3 mg of Co 3 O 4 -rGO composite in 2 ml of acetone, followed by 30 minutes of sonication to achieve uniform distribution of catalyst ink.…”

Section: Preparation Of Carbon Cloth Electrodementioning

confidence: 99%

Miniaturized 3D Printed Carbon Cloth-Based Hydrogen Fuel Cell

Vanmathi¹,

Vanmathi²,

Jayapiriya³

et al. 2022

Preprint

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Hydrogen is the most fascinating renewable energy source. Hydrogen fuel cells have facilitated the capture of hydrogen and converted power into useful energy. In this work, carbon cloth-based electrodes were used to develop miniaturized hydrogen fuel cells (HFC) using 3D-printed sealing parts. Cobalt (II) Oxide (Co3O4), synthesized from Cobalt (II) chloride hexahydrate and reduced Graphene Oxide (rGO) based nanoparticles, was used to advance the catalytic activity at the anode, and Platinum-Carbon (Pt/C) coated carbon cloth serves as the cathode. A 4.5 mg of aluminum foil embedded inside the carbon cloth was utilized for hydrogen generation. The cell discharge analysis was observed to be stable up to 4h 60 minutes, as during this time aluminum foil produced hydrogen. This compact 3D-printed HFC device was capable of producing an open circuit potential of 480 mV and a peak power density of 25.6 µW cm 2 when the Sodium Hydroxide (NaOH) alkaline electrolyte was introduced into the HFC. Furthermore, the series and parallel combination of devices produced higher voltage and power output. This cell design can be used as the power source for devices with small power applications.

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Section: Preparation Of Carbon Cloth Electrodementioning

confidence: 99%

Miniaturized 3D Printed Carbon Cloth-Based Hydrogen Fuel Cell

Vanmathi¹,

Vanmathi²,

Jayapiriya³

et al. 2022

Preprint

View full text Add to dashboard Cite

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Wearable Electrodes for Lactate: Applications in Enzyme‐Based Sensors and Energy Biodevices

et al. 2023

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Wearable bioelectronics is a promising next-generation technology for its versatility in personalized applications. Measuring lactate is one of the growing trends in wearable biosensing research. To achieve this goal, enzymes capable of catalyzing reactions involving lactate must be coupled with bioelectrode components, creating a variety of biodevices such as biosensors, biofuel cells, and other devices harvesting energy from wearers. This review provides a brief history of noninvasive and minimally invasive enzyme-based lactate biosensors and energy biodevices. We introduce key principles of lactate oxidase and lactate dehydrogenase, together with immobilization strategies for efficient electrical contacts between redox enzymes and electrode supports. Additionally, we discuss recent examples of advanced wearable enzymatic lactate sensors and elaborate on a collection of self-powered wearable energy biodevices (e. g., biofuel cells, triboelectric nanogenerators, and piezoelectric devices). Lastly, we finish this review with discussions on challenges in developing lactate bioelectronics and provide our outlook on the prospects and future directions of this compelling technology.

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