Microfluidic fuel cells with different types of fuels: A prospective review

Wang, Yifei; Luo, Shijing; Kwok, Holly Y.H.; Pan, Wending; Zhang, Yingguang; Zhao, Xiaolong; Leung, Dennis Y.C.

doi:10.1016/j.rser.2021.110806

Cited by 65 publications

(37 citation statements)

References 174 publications

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“…[8][9][10] Similarly, the small analyte volume necessary, combined with high sensitivity and selectivity have made microfluidic electrochemical sensors an attractive application. [11] Many of the specific applications have been summarized in recent reviews, for example, microfluidic flow cells, [12][13][14] CO 2 electroreduction flow cells, [15] microfluidic biosensors, [4,16,17] and nanofluidic sensors and processors. [18][19][20] While attractive, the combination of several simultaneous processes puts a large demand on the experimenter, where an understanding of the flow pattern, current and potential distribution, and the reaction environment is necessary.…”

Section: Design Of Electrochemical Microfluidic Detectors: a Reviewmentioning

confidence: 99%

Design of Electrochemical Microfluidic Detectors: A Review

Díaz-Real

Holm

2021

Adv Materials Technologies

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Miniaturized electrochemical systems integrated into microfluidic flow devices have been an active research field the last couple of decades. This has resulted in many advanced microfluidic platforms for the conversion and detection of chemicals. The development is partly driven by the increased access to and decreased cost of fabrication. In the design of microfluidic electrochemical cells, several aspects need to be handled, such as the accurate control of potential, electrolyte flow, pH, pressure, and temperature. This can be further complicated by integrating photon traffic for spectro(electro)chemical detection. Here, a comprehensive review of recent advances and approaches to the design of microfluidic flow devices for detection is presented, first dealing with the design of electrodes and flow pathways, then highlighting some common challenges and how these have been dealt with in the literature. This work aims to be a guide for researchers in the design of microfluidic electrochemical systems for detection of chemical species.

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Section: Design Of Electrochemical Microfluidic Detectors: a Reviewmentioning

confidence: 99%

Design of Electrochemical Microfluidic Detectors: A Review

Díaz-Real

Holm

2021

Adv Materials Technologies

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“…In recent years several microfluidic platforms have been proposed for applications ranging from lab-on-a-chip (LOC) biosensors [1], to characterization of liquids [2], genetic applications [3], and energy production in fuel cells [4,5]. The main advantages of microfluidics-based LOC biosensors reside in their inherent portability for on-field measurements, and low sample consumption.…”

Section: Introductionmentioning

confidence: 99%

Design of a Portable Microfluidic Platform for EGOT-Based in Liquid Biosensing

Segantini

Parmeggiani

Ballesio

et al. 2022

Sensors

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In biosensing applications, the exploitation of organic transistors gated via a liquid electrolyte has increased in the last years thanks to their enormous advantages in terms of sensitivity, low cost and power consumption. However, a practical aspect limiting the use of these devices in real applications is the contamination of the organic material, which represents an obstacle for the realization of a portable sensing platform based on electrolyte-gated organic transistors (EGOTs). In this work, a novel contamination-free microfluidic platform allowing differential measurements is presented and validated through finite element modeling simulations. The proposed design allows the exposure of the sensing electrode without contaminating the EGOT device during the whole sensing tests protocol. Furthermore, the platform is exploited to perform the detection of bovine serum albumin (BSA) as a validation test for the introduced differential protocol, demonstrating the capability to detect BSA at 1 pM concentration. The lack of contamination and the differential measurements provided in this work can be the first steps towards the realization of a reliable EGOT-based portable sensing instrument.

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“…[6,11] Paper microfluidic fuel cells are important in energy harvesting due to redox reactions on the individual electrodes because of their versatility in working with various fuels, electrolytes, and electrode types. [12,13] The redox reactions at each electrode, as well as the total reaction in the fuel cell (ethanol) device, are described in Equation ( 1)-(3). [14] Anode C…”

Section: Introductionmentioning

confidence: 99%

Stacked Microfluidic Paper Ethanol Fuel Cell with a Variety of Rapidly Prototyped Electrodes: Optimization and Performance Investigation

et al. 2022

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Paper devices are cutting‐edge platforms for creating miniaturized energy conversion, storage, and sensing devices. In such devices, co‐laminar flow and embedded capillaries not only eliminate membranes and external pumps but also allow widespread application. The fabrication, optimization, and characterization of a microfluidic paper ethanol fuel cell (MPEFC) has been demonstrated in the presented study. The MPEFC uses ethanol and sodium hydroxide as fuel and sulfuric acid as electrolytes. Numerous experiments have been conducted to improve the performance of MPEFC by optimizing various electrode types such as laser‐induced graphene (LIG), Ag nano‐ink/LIG, buckypaper, Ag nano‐ink/buckypaper, and two different 3D printed conductive electrodes. Different electrolyte concentrations (NaOH‐0.25, 0.5, 1 m) have been studied to understand the impact on ion conductivity. It is observed that the developed MPEFC with multiwalled carbon nanotube ‐buckypaper as an optimized electrode, 1 M ethanol with 0.5 m NaOH as anolyte, and 1 m H2SO4 as electrolyte delivered the best performance with a current density of 1756.2 μA cm−2, and power density of 72.62 μW cm−2, at a stable open‐circuit voltage of 235 mV with Gr 1 cellulose microchannel with parallel stacked configuration. This work demonstrates the effective enhancement of the output power with inexpensive individual MPEFC.

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Microfluidic fuel cells with different types of fuels: A prospective review

Cited by 65 publications

References 174 publications

Design of Electrochemical Microfluidic Detectors: A Review

Design of Electrochemical Microfluidic Detectors: A Review

Design of a Portable Microfluidic Platform for EGOT-Based in Liquid Biosensing

Stacked Microfluidic Paper Ethanol Fuel Cell with a Variety of Rapidly Prototyped Electrodes: Optimization and Performance Investigation

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