Article
Thermodynamics
Tiancheng Ouyang, Xiaoyi Hu, Xiaomin Shi, Wenjun Liu, Jie Lu, Wenhao Li
Summary: This paper proposes an innovative numerical model of microfluidic microbial fuel cell and investigates the effects of pH, dissolved oxygen, and electrode porosity on its performance and microbial distribution. The results show that pH gradient inhibits bacterial growth, higher electrode porosity enhances substrate transport, and higher dissolved oxygen concentration improves performance.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Physical
Oladapo Christopher Esan, Xingyi Shi, Zhefei Pan, Yun Liu, Xiaoyu Huo, Liang An, T. S. Zhao
Summary: This study investigates the performance and operation of a novel H2O2-based fuel cell. The e-fuel/H2O2 fuel cell shows higher power density and current density than using oxygen, making it a promising power source in airtight environments.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Yun Liu, Zhefei Pan, Oladapo Christopher Esan, Xiaoyu Huo, Xingyi Shi, Liang An
Summary: In this work, a new passive ammonia fuel cell prototype is designed and tested. The developed ammonia fuel cell features a passive supply of ammonia to the anode and an open cathode design. The performance and behavior of the fuel cell are investigated under different operating conditions, as well as the influence of structural parameters on mass transport and performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Xingyi Shi, Xiaoyu Huo, Oladapo Christopher Esan, Liang An, T. S. Zhao
Summary: The liquid e-fuel cell shows significant improvement in performance parameters such as energy density, current density, and energy efficiency compared to conventional liquid fuel cells. This opens up opportunities for breakthroughs in fuel cell technology.
Article
Chemistry, Physical
Ke Sun, Inaki Esnaola, Okechukwu Okorie, Fiona Charnley, Mariale Moreno, Ashutosh Tiwari
Summary: A mathematical framework is proposed for user adoption in fuel cell performance evaluation, providing practical guidelines through measures describing average and worst-case performance. A sensing algorithm is introduced to help users estimate voltages at unobserved points, validated on an industrial fuel cell dataset with results coinciding with the judgement from the fuel cell manufacturer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Hyun Woo Lim, Jae Hyun Park, Bingyi Yan, Jin Young Kim, Chan Woo Lee
Summary: In this study, a new type of titanium foam electrode with core/shell-structured mixed metal oxide nanoparticles was demonstrated to achieve almost zero polarization for the chlorine evolution reaction in chlor-alkali electrolysis. The electrode showed significantly lower noble metal usage compared to commercial electrodes and exhibited fast charge-transfer kinetics and high mass transport rates, leading to excellent performance in chlorine and hydrogen gas evolution reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Yannick Garsany, Robert W. Atkinson, Benjamin D. Gould, Rachel Martin, Laetitia Dubau, Marian Chatenet, Karen E. Swider-Lyons
Summary: The use of a dual-layer cathode catalyst layer improves the performance of proton exchange membrane fuel cells by boosting maximum power regardless of carbon porosity directionality. At 25% relative humidity, a 20% performance boost is realized with dual-layer cathode CLs. Electrochemical impedance spectroscopy results show that dual-layer catalyst layers aid in water management and reduce kinetic activity losses of the Pt.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Marc Schumann, Carsten Cosse, Daniel Becker, Daniela Vorwerk, Detlef Schulz
Summary: This study explores the integration of fuel cells into grids or on-board power supplies to replace conventional energy producers. By implementing electric field modifier electrodes, the output voltage can be controlled to minimize subsequent power conditioning systems, improving efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Javed Rehman, Kamel Eid, Roshan Ali, Xiaofeng Fan, Ghulam Murtaza, Muhammad Faizan, Amel Laref, Weitao Zheng, Rajender S. Varma
Summary: Supercapacitors are highly promising energy conversion and storage devices, with outstanding performance, stability, and ease of operation. Transition metal sulfides as electrode materials have various advantages, such as high storage capacity, conductivity, and long cycle life. This article discusses the design, preparation methods, performance, and mechanism of binary transition metal sulfide electrodes for supercapacitors, and addresses current challenges and potential solutions.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Analytical
Yaosheng Liu, Yongxing Diao, Guangxing Hu, Yuyan Zhao, Yan Shi, Hongda Wang, Zhuang Li
Summary: In this study, the renewal methods of antimony-based sensors were proposed by physical polishing and electro-chemical cathode reduction. The pH response sensitivity of the sensor increased after polishing, and further improvement was achieved through electro-chemical cathode reduction. The reasons for the sensor's deterioration and renewable mechanisms were analyzed, and the renewable effect of electro-chemical cathode reduction was evaluated for long-term monitoring.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
A. F. B. Abu Kasim, M. S. C. Chan, E. J. Marek
Summary: Proton-Exchange Membrane-Fuel Cells (PEM-FC) are considered as one of the most promising options to provide emissions-free electricity for aircraft propulsion systems. This study presents the design and modeling of a turbocharged Fuel Cell Power System (FCPS) powered by liquid hydrogen (LH2) for retrofitting a Cessna 208 Caravan aircraft. The overall efficiency and hydrogen consumption of the proposed FCPS are determined through steady-state simulations, and different power-sharing methods for the multi-stack FCPS are analyzed. The results show that the designed LH2-FCPS can achieve failure rates comparable to commercial jet engines.
JOURNAL OF POWER SOURCES
(2022)
Article
Green & Sustainable Science & Technology
Tuani C. Gentil, Victor S. Pinheiro, Felipe M. Souza, Marcos L. de Araujo, Dalmo Mandelli, Bruno L. Batista, Mauro C. dos Santos
Summary: This study demonstrates that acetol can be used as a fuel in direct alkaline liquid fuel cells, with nanostructured palladium electrocatalysts supported on carbon (Pd/C) effectively catalyzing the acetol oxidation reactions. The experimental results show that acetol oxidation in ADLFC exhibits high performance and promising power density.
Article
Nanoscience & Nanotechnology
Sarah A. Berlinger, Anamika Chowdhury, Tim Van Cleve, Aaron He, Nicholas Dagan, Kenneth C. Neyerlin, Bryan D. McCloskey, Clayton J. Radke, Adam Z. Weber
Summary: The article explores the impact of changing the primary particle loading (PPL) on the performance of catalyst layers (CLs) in electrochemical energy conversion technologies. It identifies a direct correlation between high current density performance and zeta-potential of the solution-processed inks used to form the CLs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Zhufeng Ouyang, Yosuke Komatsu, Anna Sciazko, Junya Onishi, Katsuhiko Nishimura, Naoki Shikazono
Summary: The microstructure instability of nickel-stabilized zirconia fuel electrode in solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs) is a challenge for commercialization. In this study, operando observations were conducted to study the mobility of nickel on the YSZ surface under different operation modes. The results showed that nickel phase dynamically spreads and splits up only under the SOFC mode, while this phenomenon is not observed under the SOEC mode. Nickel coarsening occurs regardless of the operation mode.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Sungjun Kim, Min Her, Yongmin Kim, Chi-Yeong Ahn, Sungbin Park, Yong-Hun Cho, Yung-Eun Sung
Summary: Intrinsic water imbalance in AEMFC complicates mass transport phenomena in the electrodes and causes performance loss. This study clarifies the influence of electrode parameters on AEMFC performance, showing that adjusting these parameters can achieve high specific power with low precious metal loading in commercial material-based AEMFC.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Chemical
Yu Luo, Yixiang Shi, Yanbo Chen, Wenying Li, Lilong Jiang, Ningsheng Cai
Article
Thermodynamics
Li Lin, Shuai Chen, Jiankang Quan, Shuting Liao, Yu Luo, Chongqi Chen, Chak-Tong Au, Yixiang Shi, Lilong Jiang
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Chemistry, Physical
Peixuan Hao, Yixiang Shi, Ningsheng Cai
Summary: LaNi5 based alloys have been proposed for hydrogen separation and purification, but limited by poor CO tolerance at atmospheric temperature. A new method, ET-VPSA, using LaNi4.3Al0.7 as adsorbent, has been proposed to be energy efficient by elevating working temperature. The study shows that ET-VPSA can achieve a higher H-2 recovery rate compared to regular PSA, leading to a higher net efficiency in the hydrogen purification process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Multidisciplinary
Tianyu Cao, Ohhun Kwon, Raymond J. Gorte, John M. Vohs
Article
Energy & Fuels
Jianghui Liu, Haishan Cao, Yixiang Shi, Peixue Jiang
Summary: This study investigated the adsorption isotherms and kinetics of methane in MIL-101(Cr) under different temperatures and pressures, finding that the delivery amount of methane can be enhanced by changing the charging and discharging temperatures. Additionally, it revealed that the adsorption rate of methane in MIL-101(Cr) is controlled by the diffusion process.
Article
Chemistry, Applied
Ohhun Kwon, Renjing Huang, Tianyu Cao, John M. Vohs, Raymond J. Gorte
Summary: The study found that LaMnO3 films deposited on MgAl2O4 showed uniform coverage and maintained their structure intact after multiple redox cycles, with Ni also retaining good dispersion. The LaMnO3-supported catalyst exhibited higher activity and superior resistance against coke formation compared to Ni on unmodified MgAl2O4. The performance of Ni on LaMnO3 films was compared to previous results on other oxide films such as LaFeO3, CaTiO3, SrTiO3, and BaTiO3.
Article
Thermodynamics
Tianyu Cao, Ohhun Kwon, John M. Vohs, Raymond J. Gorte
Summary: LaFeO3 films were deposited onto amorphous SiO2 by Atomic Layer Deposition to serve as supports for Pt. The films showed uniform coverage and high Pt dispersion following high-temperature reduction, indicating the formation of perovskite phase on a short length scale. The implications of using these materials were discussed in terms of their activity and stability.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2022)
Article
Electrochemistry
Julian M. Paige, Duytam Vu, Tianyu Cao, Steven McIntosh, Raymond J. Gorte, John M. Vohs
Summary: Solid Oxide Fuel Cells (SOFC) with La0.3Sr0.7TiO3 (LST)-yttria-stabilized ZrO2 (YSZ) anodes were prepared and modified with Ni, Pt, Pd, Fe, Co, and CeO2, with even small loadings of Pt, Ni, and Pd significantly decreasing anode impedances for operation in humidified H-2 at 973 K. The effects of CeO2, Co, and Fe were also observed, with sintering at higher temperatures being important for performance improvement. Ways of stabilizing metal particles and implications for developing ceramic anodes were also discussed.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Tianyu Cao, Ohhun Kwon, Chao Lin, John M. Vohs, Raymond J. Gorte
Summary: Experimental results showed that CaTiO3 films deposited onto gamma-Al2O3 by ALD formed two-dimensional crystallites ranging in size from 5 to 20 nm, while films of the same thickness on SiO2 remained amorphous, demonstrating the influence of the support in forming the crystallites.
Article
Energy & Fuels
Tianyu Cao, WooJae Lee, Renjing Huang, Raymond J. Gorte, John M. Vohs
Summary: The cyclic molecule 1,2,3,4-tetrahydroquinoline (THQ) has been examined as a liquid-organic hydrogen carrier (LOHC) for endothermic fuel in hypersonic aircraft engines. It showed high conversion rates and stability, making it a potential alternative for endothermic cooling.
Article
Nanoscience & Nanotechnology
Honglu Wu, Shuang Li, Yang Liu, Menghua Liu, Yixiang Shi
Summary: The faradaic process of transition-metal-based oxides or/and hydroxides is used to significantly increase the capacity of electrochemical energy storage. However, the poor electrical conductivity and low stability of these materials hinder their potential application. To overcome this, carbon-transition-metal oxide composites are synthesized to combine the high electrical conductivity of carbon materials and the capacity of transition metals. The assembled electrode of hollow carbon nanosphere (HCNS)@Ni precursor/rGO exhibits outstanding electrochemical properties, with a high specific capacity of 1589 F g(-1) at a current density of 0.3 A g(-1) and a capacity retention of 77.9% after 1600 charge-discharge cycles at 10 A g(-1).
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Weizhe Zhang, Menghua Liu, Xin Gu, Yixiang Shi, Zhanfeng Deng, Ningsheng Cai
Summary: Severe global warming caused by fossil fuel utilization necessitates the development of renewable resources and the conversion of unstable chemical energy to overcome their fluctuation-related challenges. As an environmentally friendly and efficient energy carrier, hydrogen can be produced directly by renewable energy. However, the high cost of large-scale green hydrogen production through water electrolysis impedes its competitiveness, which can be resolved by enhancing thermodynamics and kinetics at elevated working temperatures. This review primarily focuses on the effects of temperature on electrolysis cells, providing multidimensional evaluations on materials and structures, performance, degradation mechanisms and mitigation strategies, and electrolysis in stacks and systems.
Article
Energy & Fuels
Yidong Jiang, Wenfei Mo, Tianyu Cao, Yixiang Shi, Ningsheng Cai
Summary: This study investigated the preparation of SOFCs with different cathode materials and pore former ratios using the atmospheric plasma spraying (APS) technology and operated at high temperature. The effect of cathode structure on electrochemical performance was analyzed, leading to the development of an optimized spraying method. Experimental results showed that the optimized spraying method improved peak power output of SOFCs and enhanced their tolerance to sulfur-containing fuels.
INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY
(2021)
Article
Electrochemistry
Yidong Jiang, Tianyu Cao, Yixiang Shi, Ningsheng Cai
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
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)
