scholarly journals A Paper-Based Microfluidic Fuel Cell Using Soft Drinks as a Renewable Energy Source

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2443 ◽  
Author(s):  
Jaime Hernández Rivera ◽  
David Ortega Díaz ◽  
Diana María Amaya Cruz ◽  
Juvenal Rodríguez-Reséndiz ◽  
Juan Manuel Olivares Ramírez ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Room Temperature ◽  
Soft Drink ◽  
Soft Drinks ◽  
Portable Devices ◽  
Half Cell ◽  
Emergency Power ◽  
Microfluidic Fuel Cell ◽  
Specific Oxidation ◽  
Power Densities

The research aims were to construct an air-breathing paper-based microfluidic fuel cell (paper-based μ FC) and to evaluated it with different soft drinks to provide energy for their prospective use in portable devices as an emergency power source. First, in a half-cell configuration, cyclic voltammetry showed that glucose, maltose, and fructose had specific oxidation zones in the presence of platinum-ruthenium on carbon (PtRu/C) when they were individual. Still, when they were mixed, glucose was observed to be oxidized to a greater extent than fructose and maltose. After, when a paper-based μ FC was constructed, PtRu/C and platinum on carbon (Pt/C) were used as anode and cathode, the performance of this μ FC was mostly influenced by the concentration of glucose present in each soft drink, obtaining maximum power densities at room temperature of 0.061, 0.063, 0.060, and 0.073 mW cm − 2 for Coca Cola ® , Pepsi ® , Dr. Pepper ® , and 7up ® , respectively. Interestingly, when the soft drinks were cooled, the performance was increased up to 85%. Furthermore, a four-cell stack μ FC was constructed to demonstrate its usefulness as a possible power supply, obtaining a power density of 0.4 mW cm − 2 , using Coca Cola ® as fuel and air as oxidant. Together, the results of the present study indicate an alternative application of an μ FC using soft drinks as a backup source of energy in emergencies.

AuPd/polyaniline as the anode in an ethylene glycol microfluidic fuel cell operated at room temperature

2014 ◽  
Vol 50 (60) ◽  
pp. 8151-8153 ◽  
Author(s):  
N. Arjona ◽  
A. Palacios ◽  
A. Moreno-Zuria ◽  
M. Guerra-Balcázar ◽  
J. Ledesma-García ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Ethylene Glycol ◽  
Room Temperature ◽  
Microfluidic Fuel Cell ◽  
First Time

AuPd/polyaniline was used for the first time, for ethylene glycol electrooxidation in a microfluidic fuel cell operated at room temperature.

scholarly journals Single microfluidic fuel cell with three fuels – formic acid, glucose and microbes: A comparative performance investigation

2021 ◽  
Vol 11 (4) ◽  
pp. 306-316
Author(s):  
Sanket Goel ◽  
Lanka Tata Rao ◽  
Prakash Rewatkar ◽  
Haroon Khan ◽  
Satish Kumar Dubey ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Formic Acid ◽  
Microfluidic Device ◽  
Microfluidic Channel ◽  
Open Circuit ◽  
Portable Devices ◽  
Comparative Performance ◽  
Microfluidic Fuel Cell

The development of microfluidic and nanofluidic devices is gaining remarkable attention due to the emphasis put on miniaturization of conventional energy conversion and storage processes. A microfluidic fuel cell can integrate flow of electrolytes, electrode-electrolyte interactions, and power generation in a microfluidic channel. Such microfluidic fuel cells can be categorized on the basis of electrolytes and catalysts used for power generation. In this work, for the first time, a single microfluidic fuel cell was harnessed by using different fuels like glucose, microbes and formic acid. Herein, multi-walled carbon nanotubes (MWCNT) acted as electrode material, and performance investigations were carried out separately on the same microfluidic device for three different types of fuel cells (formic acid, microbial and enzymatic). The fabricated miniaturized microfluidic device was successfully used to harvest energy in microwatts from formic acid, microbes and glucose, without any metallic catalyst. The developed microfluidic fuel cells can maintain stable open-circuit voltage, which can be used for energizing various low-power portable devices or applications.

Model-Based Analysis of Electrode Design in a Direct Methanol Microscale Fuel Cell

2015 ◽  
Author(s):  
Adam S. Hollinger ◽  
Michael G. Willis ◽  
Daniel G. Doleiden
Keyword(s):  
Fuel Cell ◽  
Aspect Ratio ◽  
Room Temperature ◽  
Maximum Power Density ◽  
Low Aspect Ratio ◽  
Electrode Length ◽  
Higher Power ◽  
Direct Methanol ◽  
Power Densities ◽  
Model Based Analysis

The performance of microscale fuel cells with high-aspect-ratio electrodes, defined as the ratio of electrode length to width, is often limited by the depletion of fuel along the length of the anode. Here we present a mathematical model to study electrode aspect ratio in a direct methanol microscale fuel cell. The model is supported with experimental data to show that low-aspect-ratio electrodes achieve higher power densities via improved mass transport to electrodes. The influence of electrode width on overall cell performance was investigated by varying the catalyst deposition region in low-aspect-ratio electrodes. The performance of our experimental fuel cell is consistent with our modeling studies, achieving a maximum power density of 25.3 mW/cm2 at room temperature with 1 M methanol. The model presented here can be used to further improve the geometric design of electrodes in a microscale fuel cell.

A prospective study of anti-vibration mechanism of microfluidic fuel cell via novel two-phase flow model

Energy ◽  
2021 ◽  
Vol 218 ◽  
pp. 119543
Author(s):  
Jingxian Chen ◽  
Peihang Xu ◽  
Jie Lu ◽  
Tiancheng Ouyang ◽  
Chunlan Mo
Keyword(s):  
Fuel Cell ◽  
Prospective Study ◽  
Flow Model ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Vibration Mechanism ◽  
Microfluidic Fuel Cell ◽  
A Prospective Study

Consumption of carbonated soft drinks among Ghanaian adolescents: associations with socio-demographic factors, health risk factors and psychological distress

2021 ◽  
pp. 026010602199693
Author(s):  
Prince Atorkey ◽  
Mariam Akwei ◽  
Winifred Asare-Doku
Keyword(s):  
Risk Factors ◽  
Psychological Distress ◽  
Health Risk ◽  
Soft Drink ◽  
Demographic Factors ◽  
Soft Drinks ◽  
Health Risk Factors ◽  
Soft Drink Consumption ◽  
Carbonated Soft Drinks ◽  
Socio Demographic Factors

Background: Carbonated soft drinks consumption is associated with weight gain and other chronic diseases. Aim: To examine whether socio-demographic factors, health risk factors and psychological distress are associated with carbonated soft drink consumption among adolescents in selected senior high schools in Ghana. Methods: Data were obtained from the 2012 Ghana Global School-based Student Health Survey (GSHS). Participants consisted of 1756 school-going adolescents sampled using a two-stage cluster sampling method. Binomial logistic regression was used to determine whether socio-demographic factors, health risk factors and psychological distress were associated with consumption of soft drinks. Results: The prevalence of carbonated soft drinks consumption was 34.9%. Males (odds ratio (OR) = 0.73 (95% confidence intervals (CI) 0.59–0.92); p = 0.007), and participants with high socio-economic status (OR = 0.76 (95% CI 0.48–0.97); p = 0.033) had smaller odds for consumption of soft drinks. Also, adolescents in Senior High School (SHS) 3 (OR = 0.72 (95% CI 0.53–0.97); p = 0.034) and SHS 4 (OR = 0.63 (95% CI 0.43–0.91); p = 0.014) had smaller odds for soft drinks intake compared to those in SHS 1. Health risk factors associated with greater odds of high soft drink consumption were tobacco use (OR = 1.68, (95% CI 1.07–2.65); p = 0.025), fast food consumption (OR = 1.88, (95% CI 1.47–2.41); p = 0.011) and alcohol consumption (OR = 1.43, (95% CI 1.02–1.99); p = 0.039). Consuming adequate fruit (OR = 0.19 (95% CI 0.15–0.24); p = 0.000) and adequate vegetable (OR = 0.55 (95% CI 0.34–0.87); p = 0.011) were associated with lower odds for soft drink consumption. Adolescents who reported feeling anxious had smaller odds for soft drink intake (OR = 0.65, (95% CI 0.47–0.91); p = 0.011). Conclusions: The findings from this study show that socio-demographic characteristics, health risk factors and psychological distress are associated with the soft drink consumption among adolescents in Ghana. Interventions aimed at reducing soft drink consumption and other health risk factors are needed.

Experimental Investigation on the Performance of a Formic Acid Electrolyte-Direct Methanol Fuel Cell

2013 ◽  
Vol 11 (2) ◽  
Author(s):  
David Ouellette ◽  
Cynthia Ann Cruickshank ◽  
Edgar Matida
Keyword(s):  
Fuel Cell ◽  
Formic Acid ◽  
Power Output ◽  
Direct Methanol Fuel Cell ◽  
Operating Conditions ◽  
Portable Devices ◽  
Acid Electrolyte ◽  
Optimal Operating ◽  
Direct Methanol ◽  
Methanol Fuel Cell

The performance of a new methanol fuel cell that utilizes a liquid formic acid electrolyte, named the formic acid electrolyte-direct methanol fuel cell (FAE-DMFC) is experimentally investigated. This fuel cell type has the capability of recycling/washing away methanol, without the need of methanol-electrolyte separation. Three fuel cell configurations were examined: a flowing electrolyte and two circulating electrolyte configurations. From these three configurations, the flowing electrolyte and the circulating electrolyte, with the electrolyte outlet routed to the anode inlet, provided the most stable power output, where minimal decay in performance and less than 3% and 5.6% variation in power output were observed in the respective configurations. The flowing electrolyte configuration also yielded the greatest power output by as much as 34%. Furthermore, for the flowing electrolyte configuration, several key operating conditions were experimentally tested to determine the optimal operating points. It was found that an inlet concentration of 2.2 M methanol and 6.5 M formic acid, as along with a cell temperature of 52.8 °C provided the best performance. Since this fuel cell has a low optimal operating temperature, this fuel cell has potential applications for handheld portable devices.

Device quality InOx:Sn and InOx thin films deposited at room temperature with different rf-power densities

2012 ◽  
Vol 526 ◽  
pp. 221-224 ◽  
Author(s):  
A. Amaral ◽  
P. Brogueira ◽  
O. Conde ◽  
G. Lavareda ◽  
C. Nunes de Carvalho
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Rf Power ◽  
Power Densities

scholarly journals PLD Electrodes in a coupled microfluidic fuel cell to a lab on a chip system for energy generation.

2019 ◽  
Vol 1407 ◽  
pp. 012110 ◽  
Author(s):  
B. López-González ◽  
J. C. Abrego-Martínez ◽  
B. S. Hernández-Sarmiento ◽  
A. Moreno-Zuria ◽  
Youling Wang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Lab On A Chip ◽  
Energy Generation ◽  
Microfluidic Fuel Cell
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