Article
Computer Science, Information Systems
Angel Hernandez-Gomez, Diego Langarica-Cordoba, Panfilo R. Martinez-Rodriguez, Damien Guilbert, Victor M. Rarez-Rivera, Belem Saldivar
Summary: This paper proposes an equivalent electronic circuit model for the fuel cell voltage that depends only on the input current, and the efficiency of the developed model is confirmed through the comparison with experimental data.
Article
Chemistry, Physical
Xiaoteng Min, Yiliang Xie, Dan Chai, Xiongwen Zhang
Summary: This paper presents a novel planar proton exchange membrane fuel cell (PEMFC) stack designed for portable electronic devices. The stack consists of twenty homemade membrane electrode assemblies (MEAs) arranged on a planar surface, and the current collectors and electrical connectors are manufactured using printed circuit technology. The performance tests show that the power densities of the MEAs and the planar PEMFC stack are 0.6 W/cm(2) and 0.361 W/cm(2) at rated voltage under ambient temperature and forced convection air conditions, respectively. Stability tests reveal no significant fluctuations in output current. The feasibility of the application of planar PEMFC stacks in portable electronic devices is demonstrated, and further improvement in output performance is proposed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Fatima C. Teixeira, Antonio P. S. Teixeira, C. M. Rangel
Summary: This study proposes a new modified Nafion membrane doped with bisphosphonic acids to enhance its resistance to chemical degradation. The results of Fenton's test show that the new membranes exhibit better chemical stability and proton conduction properties compared to commercial membranes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Caizhi Zhang, Hao Liu, Tao Zeng, Jiawei Chen, Pengfeng Lin, Bo Deng, Fujian Liu, Yifeng Zheng
Summary: This study investigated the effects of different short circuit activation parameters on the performance of fuel cells. It was found that short-circuit duration parameter had the greatest impact on activation, while short-circuit interval had the smallest impact. The five activation parameters are interdependent and the optimal parameter value needs to be analyzed in combination with the operating conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Irina Falina, Natalia Loza, Marina Brovkina, Ekaterina Titskaya, Sergey Timofeev, Natalia Kononenko, Byungchan Bae
Summary: The present work discusses the influence of the thickness of MF-4SK perfluorinated sulfonic cation-exchange membranes on their electrotransport properties in hydrochloric acid solutions. It is found that diffusion permeability and conductivity are primarily determined with the specific water content of the membranes and increase with their increase. Analysis of the contribution of reverse diffusion through the membrane to the value of the limiting current shows that it can reach 20% for membranes with a thickness of 60 mu m. A study of the characteristics of the fuel cell with perfluorinated membranes of different thicknesses shows that the membrane thickness affects both the ohmic resistance of the membrane-electrode assembly and the diffusion limitations of proton transport in polymer electrolytes.
Article
Environmental Sciences
Asif Jamil, Sikander Rafiq, Tanveer Iqbal, Hafiza Aroosa Aslam Khan, Haris Mahmood Khan, Babar Azeem, M. Z. Mustafa, Abdulkader S. Hanbazazah
Summary: Fuel cells are environmentally friendly technology with high efficiency and economic advantages. Proton exchange membranes, especially for hydrogen fuel cells, have great potential but face challenges in terms of cost and degradation of proton exchange capacity over time.
Article
Chemistry, Physical
Huicui Chen, Wanchao Shan, Hongyang Liao, Yuxiang He, Tong Zhang, Pucheng Pei, Chenghao Deng, Jinrui Chen
Summary: This study establishes a three-dimensional model of proton exchange membrane fuel cell stack, and uses machine learning methods to predict voltage consistency, confirming the accuracy and universality of the method based on Gradient Boosting Decision Tree. It is found that current density has the greatest influence on the predicted value.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Heesoo Choi, Jaeyeon Kim, Obeen Kwon, Hongnyoung Yoo, Hyeok Kim, Hyeonjin Cha, Taehyun Park
Summary: In this study, water removal in a transparent fuel cell and its relationship with voltage and impedance responses are analyzed. It is found that the frequency of water flow is positively correlated with voltage, suggesting that frequent flooding-induced water removal could enhance fuel cell performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Tabbi Wilberforce, Abed Alaswad, A. Garcia- Perez, Yuchun Xu, Xianghong Ma, C. Panchev
Summary: The search for sustainable and environmentally friendly energy sources for the automotive industry has resulted in the development of various energy converting devices, such as fuel cells. Despite the merits of proton exchange membrane (PEM) fuel cells, challenges related to cost and remaining useful life prediction still hinder their commercialization in the automotive industry. This study explores the accuracy of different neural network models in predicting the remaining useful life of a PEM fuel cell, finding that the convolutional neural network plays a key role in improving the accuracy of the recurrent neural network. The model's validation is based on experimental data.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Nam Il Kim, Beum Geun Seo, Hae Wook Park, Jung Woo Shim, Hyun Jin Kong, Joon Hyung Shim
Summary: Coating a reinforced composite membrane with a hydrophilic Pt layer improves the durability of polymer membranes used in fuel cell applications. A Pt coating was introduced onto the composite membrane, resulting in increased hydrophilicity and better performance. The Pt-coated composite membrane showed less degradation and lower fluorine emission rate, making it a potential candidate for proton exchange membrane fuel cells.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Applied
Ekaterina Yu. Safronova, Polina A. Yurova, Amir M. Ashrafi, Aleksandr V. Chernyak, Andrey V. Khoroshilov, Andrey B. Yaroslavtsev
Summary: The use of ultrasonic treatment combined with SiO2 nanoparticles in PFSA solutions can optimize the performance of hybrid membranes by improving water uptake and proton conductivity.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Chemistry, Physical
Weibo Zheng, Liangfei Xu, Zunyan Hu, Yujie Ding, Jianqiu Li, Minggao Ouyang
Summary: This study proposes a numerical method to simulate the formation of pinholes in polymer electrolyte fuel cells, which enhances the accuracy of the chemical degradation model in predicting macroscopic properties. It systemically investigates the effects of temperature, pressure, and relative humidity on chemical degradation, showing that degradation rate increases with elevated temperatures and pressures, and is more severe at moderate relative humidity.
JOURNAL OF POWER SOURCES
(2021)
Article
Polymer Science
Ekaterina Yu. Safronova, Daria Yu. Voropaeva, Anna A. Lysova, Oleg V. Korchagin, Vera A. Bogdanovskaya, Andrey B. Yaroslavtsev
Summary: By changing the preparation and pretreatment conditions, the properties of Nafion membranes can be optimized. In this study, a Nafion-NMP membrane with higher conductivity and comparable hydrogen permeability was obtained by casting from a Nafion dispersion in N-methyl-2-pyrrolidone. The increase in conductivity is attributed to the optimization of the Nafion-NMP microstructure, which improves the connectivity of the pores and channels system. This leads to an increased capacity of the membrane electrode assembly compared to a commercial Nafion (R) 212 membrane.
Review
Energy & Fuels
Nur Ain Masleeza Harun, Norazuwana Shaari, Nik Farah Hanis Nik Zaiman
Summary: SPEEK is recognized as a promising alternative PEM in fuel cell applications due to its advantageous properties, but its proton conductivity is influenced by the degree of sulfonation. While high DS of SPEEK can produce high proton conductivity, excessive production of DS may have side effects on membrane stability. Therefore, finding the optimal DS of SPEEK is crucial for fabricating PEM alternatives.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Chemical
Chenyang Zheng, Na Xie, Xin Liu, Lianqin Wang, Weikang Zhu, Yabiao Pei, Runfei Yue, Haotian Liu, Shuoyao Yin, Jie Yao, Junfeng Zhang, Yan Yin, Michael D. Guiver
Summary: This study introduces a prospective approach to utilize Fc (II)/Fc (III) antioxidant by tethering Fc (II) to a SiO2 support, which enhances the oxidative stability and durability of composite PEMs. The composite PEMs doped with SiO2-Fc exhibit better performance than traditional water-soluble species in terms of ion exchange capacity retention, proton conductivity retention, and power output.
JOURNAL OF MEMBRANE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Sung-Hee Shin, Pratama Juniko Nur, Abdul Kodir, Da-Hee Kwak, Hyejin Lee, Dongwon Shin, Byungchan Bae
Article
Polymer Science
Adam F. Nugraha, Songmi Kim, Farid Wijaya, Byungchan Bae, Dongwon Shin
Article
Polymer Science
Adam F. Nugraha, Songmi Kim, Sung-Hee Shin, Hyejin Lee, Dongwon Shin, Byungchan Bae
Article
Polymer Science
Adam F. Nugraha, Mutya Rahmah Arbi, Farid Wijaya, Hyejin Lee, Dongwon Shin, Byungchan Bae
Editorial Material
Biochemistry & Molecular Biology
Byungchan Bae, Dukjoon Kim
Article
Chemistry, Multidisciplinary
Joonseok Kim, Hyejin Lee, Eun-Bum Cho, Byungchan Bae
Summary: The study focuses on the application of cerium-doped mesoporous silica as an oxidative stabilizer. Results show that the composite membranes exhibit high oxidation stability and proton conductivity.
Article
Energy & Fuels
Abdul Kodir, Sung-Hee Shin, Satbyul Park, Mutya Rahmah Arbi, Tae-Hyun Yang, Hyejin Lee, Dongwon Shin, Byungchan Bae
Summary: Research has shown that macromolecular antioxidants can improve the chemical durability of fuel cell membranes, exhibiting positive effects in Fenton oxidative tests and various analyses.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Electrochemistry
Ahmad Zulfikri Taning, Seonho Lee, Seunghee Woo, Seok-Hee Park, Byungchan Bae, Sung-Dae Yim
Summary: This study investigated the effects of particle size distribution and ink sedimentation dynamics on ink structure using AS and AC analyses. It found that the inclusion of ionomer in the ink can affect particle size distribution, while different solvent compositions lead to varied ink sedimentation dynamics. The research also demonstrates the usefulness of AS and AC techniques for studying ink properties.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Jong Gyeong Kim, Jinwon Cho, Sunghoon Han, Hyejin Lee, Eunsung Yuk, Byungchan Bae, Seung Soon Jang, Chanho Pak
Summary: FeCuxNC catalysts with ordered mesoporous grain-shaped particles were prepared and characterized, showing controlled electronic state of active sites and enhanced oxygen reduction reaction performance compared to Pt/C in alkaline conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Engineering, Chemical
Farid Wijaya, Seunghee Woo, Hyejin Lee, Adam F. Nugraha, Dongwon Shin, Byungchan Bae
Summary: In this study, sulfonated multiblock poly(phenylene-co-arylene ether sulfone) (SmPPES) membranes were prepared via Colon's Nickel catalyzed cross-coupling reaction. The membranes showed well-defined phase separation and proton conductivities comparable to or exceeding that of a reference Nafion membrane. The control over sulfonated phenylene and ether sulfone hydrophobic blocks provides new insight into designing high-performance polymer electrolyte membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Energy & Fuels
Farid Wijaya, Seunghee Woo, Suyeon Kim, Minji Chon, Jonghak Kim, Hyerin Lee, Hansung Kim, Hyejin Lee, Dongwon Shin, Byungchan Bae
Summary: Sulfonated poly(phenylene-co-arylene ether sulfone) multiblock copolymers are synthesized and investigated as proton-exchange membrane fuel cell. The incorporation of fluorinated moieties in the polymer membranes enhances proton conductivity and oxidative stability compared to nonfluorinated membranes. The 6F polymer membranes show superior performance with higher proton conductivity, lower water uptake, and better oxidative stability than the BP polymer membranes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
Sang-Hoon You, Hyejin Lee, Eunji Ahn, Kyu-Su Kim, Byung-Jo Lee, Dongwon Shin, Vinod K. Paidi, Donghwa Lee, Byungchan Bae, Kug-Seung Lee, Yong-Tae Kim
Summary: In order to avoid the cost increase caused by the use of Pt group metal (PGM) catalysts, anion-exchange membrane fuel cells (AEMFCs) operating in an alkaline electrolyte environment where non-precious metals can be used are promising. This study developed Ta-on-NiMo/C as an anodic catalyst for AEMFCs with advanced performance by adding Ta on the surface of commercial NiMo/C via physical vapor deposition. The Ta-on-NiMo/C exhibited 1.5 times more hydrogen oxidation reaction (HOR) activity than bare NiMo/C, and the enhanced performance was also demonstrated in a membrane electrode assembly.
Article
Biochemistry & Molecular Biology
Seunghyun Lee, Hyejin Lee, Tae-Hyun Yang, Byungchan Bae, Nguyen Anh Thu Tran, Younghyun Cho, Namgee Jung, Dongwon Shin
Article
Chemistry, Multidisciplinary
Dongwon Shin, Adam F. Nugraha, Farid Wijaya, Sojeong Lee, Eunyoung Kim, Jieun Choi, Hyoung-Juhn Kim, Byungchan Bae
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
