Article
Chemistry, Analytical
Ahmed Mohiuddin, Babneet Kaur, Suhanya Duraiswamy, Melepurath Deepa, Vinod M. Janardhanan
Summary: A membrane-free, low-cost microfluidic fuel cell with a trident-shaped channel structure was developed. The cell showed good electrochemical performance by utilizing Ni wires as catalysts and electrical connectors. The concentration of the oxidant, KMnO4, had a significant effect on the performance, while the concentration of the fuel, formic acid, had little impact. The microfluidic fuel cell demonstrated a stable current and maximum power density, making it suitable for various applications such as diagnostic devices and power supplies for MEMS devices.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
O. Korjus, P. Moller, K. Kooser, T. Kaambre, O. Volobujeva, J. Nerut, S. Kotkas, E. Lust, G. Nurk
Summary: Ni-doping in LSCT fuel electrode significantly influences catalytic activity, stability, and cation mobility, leading to reduced polarization resistance, stabilized structure, suppressed element migration, and avoidance of key issues.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Chemical
Haruna Hirose, Yoshiyuki Komoda, Takafumi Horie, Naoto Ohmura
Summary: This study investigates the separation mechanism of a rotationally reciprocating impeller through visualizing the stretching behavior of streaklines. The elongational rate of streaklines is found to increase proportionally with the increase in Reynolds number, and the bending of the boundary significantly affects the linear component of the elongation rate. Compared with other chaotic mixing flows, tracer particles are enclosed in turnstile lobes at the hyperbolic fixed point at the wall, transported on the boundary (separatrix), and then evenly distributed into both mixing regions. It is concluded that the waviness of the boundary enhances fluid transportation between the two mixing regions when the Reynolds number is greater than 10.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Mian A. Ali, Graziela C. Sedenho, Jessica C. Pacheco, Rodrigo M. Iost, Asma Rahman, Ayaz Hassan, Daniel R. Cardoso, Roberto S. Gomes, Frank N. Crespilho
Summary: In this study, a membraneless and metal-free ethanol-O2 biofuel cell was developed, which operates efficiently with a redox-active quinone-based catalyst, providing renewable electricity at a lower cost.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Mingjuan Huang, Chunhong Zhou, Ruiting Wen, Jiuying Tian, Wenduo Huang, Haiyue Wei, Jusheng Lu
Summary: A visible-light-driven photocatalytic fuel cell with double photoelectrodes was constructed for simultaneous electricity generation and pollutant degradation. The experimental results showed that the constructed fuel cell exhibited high electricity output and good efficiency for pollutant degradation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Chaoran Liu, Sanshan Hu, Lu Yin, Wenli Yang, Juan Yu, Yumin Xu, Lili Li, Gaofeng Wang, Luwen Wang
Summary: This study analyzed and discussed the effect of an anode composite electrode on the performance of a micro direct methanol fuel cell, focusing on the catalyst layer and micro-porous layer. It was found that optimizing the preparation under specific conditions can improve the performance of the fuel cell.
Review
Energy & Fuels
Muhammad Tanveer, Kwang-Yong Kim
Summary: Membraneless microfluidic fuel cells (MMFCs) are being extensively studied as an alternative to batteries and conventional membrane fuel cells due to their simple functioning and lower manufacturing cost. This review article summarizes different flow configurations of MMFCs reported between 2002 and 2020, focusing on how they improve power density output by reducing or modifying diffusive mixing and depletion zones. Opportunities for research and challenges in improving MMFC performance are also discussed.
Article
Green & Sustainable Science & Technology
Lanka Tata Rao, Satish Kumar Dubey, Arshad Javed, Sanket Goel
Summary: Laser-induced graphene (LIG) is a three dimensional porous material with excellent properties, and in this study, a low-cost microfluidic fuel cell with LIG electrodes was proposed. By optimizing parameters, the performance of the fuel cell was enhanced.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Kaiyuan Zuo, Zhenyu Yuan
Summary: This article presents a high concentration adaptive direct methanol fuel cell based on a dual-cavity structure, and investigates its performance under different supply concentrations of methanol solution to determine optimal working conditions. The advantages of the anode double-cavity structure in high concentration and high energy density fuel supply are demonstrated, along with the effects of various materials on cell performance through experimental investigation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Manufacturing
Lanka Tata Rao, Satish Kumar Dubey, Arshad Javed, Sanket Goel
Summary: Membraneless Microfluidic Paper Fuel Cells (MMPFCs) have the advantage of eliminating the need for membrane and external pumps, and can provide enhanced energy densities through optimized configurations.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Engineering, Chemical
Shenghua Fu, Wenzhong Lou, Jingkui Wang, Tongan Ji, Chubao Li, Zhaohui Chen
Summary: The study investigated the impact of micro/nano aluminum powder (MNAP) cloud concentration on fuel air explosive (FAE) detonation. A dynamic concentration measurement method based on ultrasonic transducers was developed, showing high precision and real-time response, with results consistent with computational simulations, and indicating better distribution characteristics of aluminum nanoparticles.
Article
Green & Sustainable Science & Technology
Yunlong Yang, Peng Xu, Sijia Dong, Yang Yu, Huan Chen, Jibo Xiao
Summary: Using watermelon rind waste and nitrite-containing wastewater as substrates, a study found that a membraneless biocathode microbial fuel cell (MB-MFC) can generate electricity with potential feasibility. The main findings include the rapid fermentation of watermelon rind to organic acids, dominant microbial genera in cathodic and anodic biofilms, and the cooperation of microbes in electricity production and nitrite conversion. Key genes involved in nitrite reduction were also identified.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Muhammad Tanveer, Kwang-Yong Kim
Summary: A novel flow channel configuration of a membraneless microfluidic fuel cell (MMFC) with porous flow-through electrodes was numerically investigated, showing that a hollow structure in the central flow channel coupled with porous electrodes performed the best in terms of peak power density.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Ji-Hyun Oh, Muhammad Tanveer, Kwang-Yong Kim
Summary: A novel double-bridge shape was proposed for a membraneless microfluidic fuel cell, leading to improved electrochemical performance. Parameter studies showed that adjusting different channel parameters could optimize power density and enhance energy conversion efficiency in the fuel cell.
Article
Electrochemistry
Keyla Teixeira Santos, Hugo Barbosa Suffredini, Gunther Wittstock, Camilo Andrea Angelucci
Summary: Ionic liquids are considered a new-generation electrolyte for electrochemical devices, forming a liquid-liquid interface with water due to their hydrophobicity. By utilizing the IL-water interface, a membraneless energy generation device combining oxygen reduction and hydrogen oxidation reactions can be constructed, achieving high open circuit voltage and power density at room temperature. The device has potential for improvement in fuel cell power and design.
Article
Chemistry, Analytical
Seung Yong Hwang, In Jae Seo, Seung Yong Lee, Yoomin Ahn
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2015)
Article
Biochemical Research Methods
Taemin Limi, Seung Yong Lee, Jeongsuong Yang, Seung Yong Hwang, Yoomin Ahn
Article
Engineering, Industrial
Yoomin Ahn, Seoung Hwan Lee
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
(2017)
Article
Chemistry, Physical
Seoung Hwan Lee, Yoomin Ahn
JOURNAL OF POWER SOURCES
(2017)
Article
Chemistry, Physical
Joon Yong Yoon, Yoomin Ahn, Uwe Sehroeder
JOURNAL OF POWER SOURCES
(2018)
Article
Engineering, Manufacturing
Yoomin Ahn, Seoung Hwan Lee
MACHINING SCIENCE AND TECHNOLOGY
(2019)
Article
Biochemical Research Methods
Yong-Jun Ko, Joon-Ho Maeng, Seung Yong Hwang, Yoomin Ahn
Article
Energy & Fuels
Seoung Hwan Lee, Yoomin Ahn
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2019)
Article
Chemistry, Physical
Do-Gyun Jung, Yoomin Ahn
JOURNAL OF POWER SOURCES
(2020)
Article
Energy & Fuels
Taeseong Choi, Noh Nyun Park, Yoomin Ahn
Summary: The study proposes co-laminar flow microbial fuel cells with flow-through electrodes to improve power density and optimizes fuel cell performance through microfabrication technology. The research provides valuable insights for the commercialization of microfluidic MFCs as power sources for portable medical and electronic instruments.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Biophysics
Myunghun Kim, Youngju Kwon, Yoomin Ahn
Summary: This study developed eco-friendly and disposable paper-based membraneless microfluidic enzymatic fuel cells (EFCs) without any mediators to reduce toxicity and cost. Glucose oxidase and laccase were immobilized on multi-walled carbon nanotube electrodes to catalyze the redox reaction of glucose and oxygen, with experimental results showing that glucose concentration affects cell performance.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Hyeong-Min Cho, Hongyoung Ha, Yoomin Ahn
Summary: This study reports the development of a co-laminar flow microbial fuel cell (MFC) with microfabricated single-walled carbon nanotube (SWCNT) electrodes using electrophoretic deposition. The study investigates the effects of flow channel height and shear stress on the performance of the MFC, showing that adjusting both parameters can improve power density but decrease fuel utilization. The developed MFC with its high power density has great potential for research and applications compared to traditional metal-based electrode MFCs.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Electrochemistry
Noh Hyun Park, Jinyong Kim, Yoomin Ahn
Summary: A membraneless microfluidic fuel cell micromachined with a fabric substrate is proposed to improve the longevity of self-pumping microfluidic fuel cells. The fabric substrate provides good longevity and passive pumping. The effects of fabric properties and electrode configuration on the novel single-layer fuel cell are investigated.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Cheon Ho Lee, Hongyoung Ha, Yoomin Ahn, Hong Liu
Summary: This paper presents a novel design and operation of microbial fuel cells (\MFCs) with monolayer paper-based substrate/electrodes and microchannels with co-laminar flow. The performance is significantly improved with the incorporation of a double-inlet and diverging channel design. The developed MFCs achieve a peak power density of 19.4μW cm-2 and maximum current density of 190.4μA cm-2, surpassing the performance of previously reported paper-based single MFCs.
JOURNAL OF POWER SOURCES
(2023)