Article
Thermodynamics
Haolong Li, Tuo Zhang, Wei Wei, Fengxia Liu, Xiaofei Xu, Zhiyi Li, Zhijun Liu
Summary: This study presents a novel interconnector design for solid oxide fuel cells, which allows multiple gases to enter without interference and increases the peak power density. The interconnector reduces the overpotentials of electrochemical reactions and enhances mass transfer efficiency.
Article
Electrochemistry
Katsuyoshi Kakinuma, Hitoshi Taniguchi, Takayuki Asakawa, Toshihiro Miyao, Makoto Uchida, Yasuhito Aoki, Tsuyoshi Akiyama, Akihiro Masuda, Nobuyuki Sato, Akihiro Iiyama
Summary: The technical feasibility and potential issues of an intermediate-temperature-operated polymer electrolyte fuel cell are investigated in this study. The results show that selecting appropriate membrane and catalyst can address issues such as cell resistivity, mass activity, and gas crossover rate in fuel cells.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Thermodynamics
Quanrong Fu, Zhiyi Li, Wei Wei, Fengxia Liu, Xiaofei Xu, Zhijun Liu
Summary: The study introduces a novel beam and slot interconnector (BSI) for SOFC, which improves power density and reduces various overpotentials compared to conventional interconnectors.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Oladapo Christopher Esan, Xingyi Shi, Xiangyu Su, Yichen Dai, Liang An, T. S. Zhao
Summary: A new energy storage system utilizing electrically rechargeable liquid fuels has been proposed. A model for a liquid e-fuel cell was developed to study the effects of operation variables and design parameters on cell performance. Increasing e-fuel concentration, sulfuric acid concentration, and flow rate improves cell performance, while membrane thickness degrades performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Environmental
Ruggero Rossi, Bruce E. Logan
Summary: High current densities achieved by bioanodes in electrochemical cells have not translated into higher power densities in microbial fuel cells (MFCs) until now. This study demonstrates that the critical factor for boosting power generation in MFCs is the transfer of OH- ions from the cathode to the bioanode. The results show that using an anion exchange membrane (AEM) in MFCs significantly increases power density compared to using a cation exchange membrane (CEM) or non-ion selective ultrafiltration membrane (UFM).
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agriculture, Dairy & Animal Science
J. A. Arce-Cordero, A. Ravelo, J. R. Vinyard, H. F. Monteiro, B. C. Agustinho, E. Sarmikasoglou, S. L. Bennet, A. P. Faciola
Summary: In this study, we evaluated the effect of different sources of magnesium on ruminal fermentation, finding that the source did not significantly impact fermentation variables, but soluble magnesium concentration was higher for MgO compared to BLN. Buffer supplementation increased ruminal pH, acetate and branched-chain VFA proportions, and NDF digestibility, with interactions observed for propionate, butyrate, and NH3-N based on magnesium source. These results suggest that both MgO and BLN can promote similar ruminal fermentation at a concentration of 0.25% Mg, but buffer supplementation can have varying effects based on the magnesium source used.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Chemistry, Physical
Quanrong Fu, Zhiyi Li, Wei Wei, Fengxia Liu, Xiaofei Xu, Zhijun Liu
Summary: This study presents a novel interconnector design, named groove and rib-finned interconnector, to improve the performance of planar solid oxide fuel cell (SOFC) by enhancing fuel utilization and output power density. The novel interconnector increases reactant gas velocity and vorticity, eliminates oxygen-free zone, reduces overpotentials, and improves the electrical performance of the SOFC stack.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Enling Tian, Yuan Liu, Fengjun Yin, Shun Lu, Lei Zheng, Xingzu Wang, Zongping Wang, Hong Liu
Summary: A major challenge of the osmotic microbial fuel cell (OsMFC) application is the slow transport of protons from anode to cathode. To solve this problem, proton conductive sites were introduced into the forward osmosis (FO) membrane, improving proton transport flux. The optimized OsMFC system showed significant improvements in reducing salinity, increasing water extraction volume, enhancing chemical oxygen demand removal efficiency, and improving current density.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Samuel Koomson, Choong-Gon Lee
Summary: The gas-phase mass transfer effects of 100 cm2 class molten carbonate cells (MCCs) were investigated in both fuel cell (FC) and electrolysis cell (EC) modes. The results showed that there were no activation polarization in both modes and the hydrogen electrode (HE) had significant gas-phase mass transfer resistance. The overpotential shift pattern of HE by flow rate change was symmetric in both modes. On the other hand, a small gas-phase mass transfer inducing overpotential was observed at the oxygen electrode (OE) in the FC mode compared to the HE, while there was no gas-phase mass transfer-induced overpotential in the EC mode. Therefore, the EC mode of MCCs comprises mainly gas-phase mass transfer controlling processes at HE and negligible at OE. It can be inferred that reversible operation in both modes is possible, and the reaction mechanisms are symmetrical between FC and EC modes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Samuel Koomson, Choong-Gon Lee
Summary: This work investigates the reaction characteristics of the anode and cathode by overpotential analyses in 100 cm2 class planar anode-supported SOFCs. The anodic overpotential is mainly caused by mass transfer-induced overpotentials of H2 and H2O species, while the cathodic overpotential is mainly caused by a deficiency of O2 species in the gas phase. Furthermore, gas flow rate and utilization are found to have significant effects on both anodic and cathodic overpotentials, indicating the importance of gas-phase mass transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Xiaoqiang Zhang, Mayken Espinoza, Tingshuai Li, Martin Andersson
Summary: This study developed a 3D single-channel multiphysics computational fluid dynamics model based on the finite element method to analyze the impact of decreased tortuosity on SOFC performance, with parametric sweep study revealing increased ionic current density and temperature with decreased tortuosity. The findings provide insights for better porous electrode design.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Xuan Wang, Yingying Zhi, Yun Chen, Nan Shen, Guoxiang Wang, Yan Yan
Summary: Evidence suggests that phosphorus deposited in sediment for many years can be released by microbial activity, causing harmful algal blooms in lakes. Sediment microbial fuel cells (SMFC) have been identified as an in-situ method for limiting phosphorus release. However, the impact of SMFC on the micro-environment near the electrodes, which can affect phosphorus distribution, has been overlooked. This study successfully established SMFC systems to investigate their influence on phosphorus species and spatial distribution in lake sediments.
Article
Chemistry, Physical
Wenwen Chen, Zhongliang Liu, Yanxia Li, Xiaoye Xing, Qiang Liao, Xun Zhu
Summary: This study demonstrates that adding sodium citrate as an anolyte additive in microbial fuel cells can significantly enhance bioelectricity generation efficiency and bioanode activity, while also slowing down the performance decline trend and controlling the pH drop, helping to maintain long-term stable operation of the cells.
JOURNAL OF POWER SOURCES
(2021)
Article
Thermodynamics
Seongsu Kim, Junghwan Kim
Summary: The transition from CNG to hydrogen has started in mass transportation in Seoul. This study explores the feasibility of using a hydrogen combustion engine for city buses and proposes a hydrogen-fueled, spark-ignition engine. Experiment and simulation are conducted to investigate the combustion characteristics, performance, and emissions. Real-time driving data and statistics of 373 bus routes in Seoul are analyzed. It is found that hydrogen-engine buses can be more efficient and a 20-Mpa fuel tank is sufficient for Seoul city buses.
Article
Chemistry, Analytical
Chi-Chang Wu, Min-Rong Wang
Summary: A single-crystalline silicon nanobelt field-effect transistor (SiNB FET) device was developed for pH and biomolecule sensing, with buffer concentration shown to affect sensitivity and stability. The sensor demonstrated sensitivity to solution pH and AFP, with results indicating a negative relationship between buffer concentration and sensor sensitivity. Surface functionalization was found to impact AFP sensing effectiveness, with buffer concentration influencing current shifts in the sensor. Overall, buffer concentration plays a crucial role in the sensitivity and stability of the SiNB FET device in chemical and biomolecular sensing.
Article
Biotechnology & Applied Microbiology
Hengjing Yan, Matthew D. Yates, John M. Regan
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2015)
Article
Agricultural Engineering
Liang Zhang, Xun Zhu, Hiroyuki Kashima, Jun Li, Ding-ding Ye, Qiang Liao, John M. Regan
BIORESOURCE TECHNOLOGY
(2015)
Article
Engineering, Environmental
Hiroyuki Kashima, John M. Regan
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2015)
Article
Chemistry, Physical
Shiqi Ou, Hiroyuki Kashima, Douglas S. Aaron, John M. Regan, Matthew M. Mench
JOURNAL OF POWER SOURCES
(2016)
Article
Chemistry, Physical
Shiqi Ou, Yi Zhao, Douglas S. Aaron, John M. Regan, Matthew M. Mench
JOURNAL OF POWER SOURCES
(2016)
Article
Biotechnology & Applied Microbiology
Hou Yu, Hiroyuki Kashima, John M. Regan, Abid Hussain, Elsayed Elbeshbishy, Hyung-Sool Lee
ENZYME AND MICROBIAL TECHNOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Liang Zhang, Xun Zhu, Jun Li, Hiroyuki Kashima, Qiang Liao, John M. Regan
Article
Ecology
Sheila M. Saia, Patrick J. Sullivan, John M. Regan, Hunter J. Carrick, Anthony R. Buda, Nicholas A. Locke, M. Todd Walter
FRESHWATER SCIENCE
(2017)
Article
Ecology
Sheila M. Saia, Patrick J. Sullivan, John M. Regan, Hunter J. Carrick, Anthony R. Buda, Nicholas A. Locke, M. Todd Walter
FRESHWATER SCIENCE
(2017)
Article
Environmental Sciences
Enzo Leiva-Aravena, Eduardo Leiva, Vasty Zamorano, Claudia Rojas, John M. Regan, Ignacio T. Vargas
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Electrochemistry
Ruggero Rossi, Derek M. Hall, Xu Wang, John M. Regan, Bruce E. Logan
ELECTROCHIMICA ACTA
(2020)
Article
Biotechnology & Applied Microbiology
Kyoung-Yeol Kim, Ruggero Rossi, John M. Regan, Bruce E. Logan
Summary: Effluents from acetate- and wastewater-fed MFCs contain high numbers of Geobacter spp., but a high percentage of cells are inactive or dead, leading to lower counts of exoelectrogens using enumeration methods.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Claudia Rojas, Ignacio T. Vargas, Mary Ann Bruns, John M. Regan
BIOELECTROCHEMISTRY
(2017)
Article
Engineering, Environmental
Gulsad Uslu, Ali Demirci, John M. Regan
JOURNAL OF WATER PROCESS ENGINEERING
(2016)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)