Article
Chemistry, Physical
Roby Soni, James B. Robinson, Paul R. Shearing, Dan J. L. Brett, Alexander J. E. Rettie, Thomas S. Miller
Summary: Electrochemical impedance spectroscopy (EIS) is widely used in battery analysis. However, the data interpretation in traditional analysis techniques is limited. This study demonstrates the use of distribution of relaxation times (DRT) analysis to provide quantitative deconvolution of EIS spectra from Li-S batteries, revealing the contributions of distinct electrode processes to the total cell polarisation.
ENERGY STORAGE MATERIALS
(2022)
Article
Energy & Fuels
Mingyuan Chen, Jiuguang Geng, Huaxin Chen, Yanhui Niu, Ronghua Wang, Wanzhen Wu, Shungen Zhao, Zhihua Zhong
Summary: This paper investigates the influence of humidity and temperature on the diffusivity of different bitumens through electrochemical impedance spectroscopy testing. The results indicate that an increase in duration, temperature, and humidity leads to a decrease in impedance and a significant increase in the capacitance parameters associated with time.
Article
Materials Science, Ceramics
Hyeongwon Jeong, Bharat Sharma, Seungyeon Jo, Yo Han Kim, Jae-ha Myung
Summary: The LSM-ScSZ composite electrode for SOFC cathode shows promising performance in oxygen reduction reaction. A properly controlled composition and sintering temperature improve the microstructure of the electrode, leading to reduced impedance and enhanced active surface area and connectivity. This study suggests an integrated approach in the development of SOFC cathode design using commercial materials.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Ayesha Akter, John Pietras, Srikanth Gopalan
Summary: This paper investigates the application of a 50 mol% neodymium doped ceria (NDC50) barrier layer between the oxygen electrode and electrolyte. Compared to the GDC10 barrier layer, the NDC50 barrier layer exhibits lower polarization resistance and improved ionic conductivity across a wide range of temperature and oxygen partial pressure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
William Ait-Idir, Peizhe Wu, Ricardo Sgarbi, Quentin Labarde, Salah Touhami, Meriem Daoudi, Assma El Kaddouri, Jean-Christophe Perrin, Jerome Dillet, Clemence Marty, Fabrice Micoud, Marian Chatenet, Olivier Lottin, Julia Mainka
Summary: In PEM fuel cells, oxygen diffusion is influenced by both the gas diffusion layer and the cathode catalyst layer. Experimental data shows that the low-frequency diffusion impedance is mainly related to the gas diffusion layer, while the high-frequency impedance is primarily affected by the ionomer film in the cathode catalyst layer. Therefore, the appropriate equivalent electrical circuit is the series connection of the Kulikovsky diffusion impedance and the ORR kinetics circuit.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
K. Cwieka, A. Lysik, T. Wejrzanowski, T. Norby, W. Xing
Summary: This paper demonstrates the influence of modifications in microstructure and chemical composition on the electrochemical behavior of cathodes for molten carbonate fuel cells (MCFCs). By designing new three-layer cathode structures, combining porous silver, nickel oxide, and nickel foam layers, it is possible to enhance cell performance, decrease internal resistance, and improve charge transfer and mass transport efficiency.
JOURNAL OF POWER SOURCES
(2021)
Article
Automation & Control Systems
Dulyawat Doonyapisut, Byeongkyu Kim, Jung Kyu Kim, Eunseok Lee, Chan-Hwa Chung
Summary: Advancements in energy storage, photocatalysis, and sensors have generated large amounts of electrochemical impedance (EIS) data. Interpreting this data is challenging, but recent progress in machine learning (ML) models for EIS classification has been made. However, most models lack physical descriptor representation. In this study, variational autoencoders (VAE) were applied to EIS data analysis, achieving accurate classification, parameter prediction, and physical descriptor visualization.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Electrochemistry
Olivera Luzanin, Joze Moskon, Tjasa Pavcnik, Robert Dominko, Jan Bitenc
Summary: This study presents a cyclable symmetric cell approach to investigate the potential of organic cathodes in multivalent batteries. It demonstrates that this approach removes the limitations of multivalent metal anodes and enables reliable electrochemical impedance spectroscopy (EIS) measurements on organic cathodes.
BATTERIES & SUPERCAPS
(2023)
Article
Green & Sustainable Science & Technology
Priyakant Pushkar, Arvind Kumar Mungray
Summary: The study showed that sediment height, anode size, and chamber volume can impact the diffusion impedance and power density in benthic microbial fuel cells (BMFCs), suggesting practical implications for improving energy generation efficiency. Microbial consortia were found to play a crucial role in mass transport phenomena and electrochemical diffusion in BMFCs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Electrochemistry
Bibhudatta Malik, Kalimuthu Vijaya Sankar, Rajashree Konar, Yoed Tsur, Gilbert Daniel Nessim
Summary: A heterostructure Fe3S4@Ni3S2 was designed as a potent OER electrocatalyst in alkaline medium, exhibiting low onset potential and overpotential. The OER kinetics of Fe3S4@Ni3S2 were examined using ISGP, revealing three events with decreased resistance at high overpotentials. Structural investigation using X-ray photoelectron spectroscopy suggested catalytic activation via constant exchange of anions between electrode and electrolyte during electrochemical oxidation.
Review
Chemistry, Physical
Meagan Papac, Vladan Stevanovi, Andriy Zakutayev, Ryan O'Hayre
Summary: Triple ionic-electronic conductors (TIECs) have potential applications in various electrochemical devices, but further research is needed to fully understand their transport properties and electrocatalytic activity. Current studies focus on defect formation and conduction mechanisms in single-phase materials. By exploring criteria for discovery, design principles, and operating conditions, it is possible to intentionally adjust the conductivity of each charge carrier.
Article
Chemistry, Physical
Daniel Sikstrom, Aroosa Javed, Shoaib Muhammad, Venkataraman Thangadurai
Summary: Perovskite-type Nd0.75Ba0.25Co0.8Fe0.2O3-delta (NBCF25) was synthesized via solid-state method and showed a single-phase orthorhombic structure. It exhibited minor reactivity with Sr and Mg-doped LSGM when sintered at 1050 degrees C. The sintered sample pellets showed a maximum conductivity of 674 S/cm at 700 degrees C. AC electrochemical impedance spectroscopy measurements on LSGM pellets revealed that NBCF25 has the lowest area-specific resistance of 0.07 omega cm(2) at 800 degrees C in air. Impedance spectroscopy genetic programming was used to understand the oxygen reduction reaction.
Article
Engineering, Chemical
Wen Che, Xiaowen Wan, Dongyun Zhang, Chengkang Chang
Summary: In this study, a LBSO glass phase surface modification was adopted to enhance the electrochemical performance of LNMO cathode, improving the specific capacity and coulombic efficiency. The capacity retention after 100 cycles was significantly improved compared to the pristine sample, and the coated cathode showed good rate performance with high specific capacity. These results suggest a high potential for the material as a candidate cathode for high energy density batteries.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jesus Manuel Jaquez-Munoz, Citlalli Gaona-Tiburcio, Ce Tochtli Mendez-Ramirez, Miguel Angel Baltazar-Zamora, Francisco Estupinan-Lopez, Raul German Bautista-Margulis, Josefina Cuevas-Rodriguez, Juan Pablo de los Rios, Facundo Almeraya-Calderon
Summary: The anodization of titanium is an effective method to protect titanium and its alloys from corrosive environments. In this study, the electrochemical corrosion behavior of Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-4V alloys anodized in 1M H2SO4 and H3PO4 solutions was evaluated. The anodized samples showed changes in E-corr values and a higher passivation zone. EIS analysis revealed a higher resistance for samples anodized in H3PO4 and Ti-6Al-2Sn-4Zr-2Mo.
Article
Materials Science, Multidisciplinary
Artem P. Tarutin, Yulia G. Lyagaeva, Aleksey I. Vylkov, Maxim Yu. Gorshkov, Gennady K. Vdovin, Dmitry A. Medvedev
Summary: The research focuses on rational engineering of Cu-doped Pr(2)NiO4(+delta) materials and analyzing their electrode behavior for reversible protonic ceramic cells. Results show that copper doping with x = 0.2 has a positive impact on the thermomechanical compatibility of the Ba(Ce,Zr)O-3-based electrolytes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Yumin Da, Lirong Zeng, Caiyun Wang, Teng Mao, Rui Chen, Cairong Gong, Guoliang Fan
Article
Energy & Fuels
Ashley Fly, Kyoungyoun Kim, John Gordon, Daniel Butcher, Rui Chen
Article
Materials Science, Multidisciplinary
Thanarajan Kumaresan, Thiagarajan Velumani, Mathan Chandran, Karthikeyan Palaniswamy, Alex Thirkell, Ashley Fly, Rui Chen, Senthilarasu Sundaram
Article
Thermodynamics
Jianfu Zhao, Lei Zhou, Kuangdi Li, Xiaojun Zhang, Jiaying Pan, Rui Chen, Haiqiao Wei
COMBUSTION AND FLAME
(2020)
Article
Chemistry, Physical
Ren Zhang, Lin Chen, Haiqiao Wei, Jiaying Pan, Jinguang Li, Penghui Yang, Rui Chen
Summary: The study shows that direct-injected hydrogen can significantly improve the combustion instability and power capability of natural gas engines by fast flame propagation. Additionally, late injection of direct-injected hydrogen can achieve higher thermal efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Mengshan Suo, Kai Sun, Rui Chen, Zhizhao Che, Zhen Zeng, Qifeng Li, Xingxiao Tao, Tianyou Wang
Summary: Metal foam flow fields have the potential to enhance oxygen mass transfer to the catalyst layer and improve oxygen distribution homogeneity in PEM fuel cells. Decreasing metal foam porosity may lead to nonmonotonic variation in oxygen mass transfer rate, while increasing pore density and compression ratio can enhance oxygen mass transfer, especially at high inlet velocities. The insights from this study could be valuable for the implementation of metal foam flow fields in PEM fuel cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Computer Science, Artificial Intelligence
Yiyao Zhou, Rui Chen, Yiqiang Zhao, Xiding Ai, Guoqing Zhou
Summary: This paper proposes a novel point cloud denoising algorithm based on non-local self-similarity characteristics, which utilizes adaptive curvature threshold and structure-aware descriptor to preserve structure and achieve high-quality reconstruction. The experiments show that the algorithm outperforms state-of-the-art methods in terms of reconstruction accuracy and structure preservation.
PATTERN RECOGNITION
(2021)
Article
Environmental Sciences
Li Shen, Yao Lu, Hao Chen, Hao Wei, Donghai Xie, Jiabao Yue, Rui Chen, Shouye Lv, Bitao Jiang
Summary: This study introduces a building-change-detection dataset named S2Looking, which consists of large-scale side-looking satellite images and tens of thousands of annotated change instances, for training deep-learning algorithms. The dataset offers larger viewing angles, illumination variances, and complexity of rural images compared to existing datasets, and preliminary tests suggest higher level of challenges for deep-learning algorithms.
Article
Chemistry, Physical
Zhen Zeng, Tianyou Wang, Rui Chen, Mengshan Suo, Kai Sun, Panagiotis E. Theodorakis, Zhizhao Che
Summary: This study investigates the formation mechanism of multidirectional partitioned square icing patterns using molecular dynamics simulations. The researchers propose square icing parameters to distinguish partitioned patterns from homogeneous patterns and liquid water. It is found that the number of graphene monolayers influences the formation of partitioned patterns, with greater energetically favorable conditions for confinement between multiple graphene sheets. The interaction between layers of water molecules is identified as another dominant factor. The study also explores the conversion from partitioned structures to homogeneous square patterns by manipulating pressure and temperature.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Mechanics
Lijia Zhong, Lei Zhou, Peilin Liu, Xiaojun Zhang, Kuangdi Li, Rui Chen, Haiqiao Wei
Summary: The present work investigates the influence of fuel and diluent gas reactivity on end-gas autoignition and detonation development. It is found that both chemical reactivity and shock wave have significant effects on these processes. Different fuels and diluent gases show varying transition thresholds for self-ignition and detonation development. The study also reveals that fuel with shorter ignition delay requires lower flame tip velocity and experiences delayed detonation occurrence. The transition thresholds are determined by both chemical reactivity and flame speed.
Article
Chemistry, Physical
Milon Miah, Poulami Hota, Tapas Kumar Mondal, Rui Chen, Shyamal K. Saha
Summary: This study explores the application of mixed metal sulfides as electrode materials for supercapacitors. FeNiS2 nanosheets are synthesized and decorated on rGO surface. The results show that FeNiS2 decorated on rGO exhibits high specific capacitance and capacity retention, indicating its potential in the field of supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Proceedings Paper
Computer Science, Theory & Methods
Fei Zhao, Rui Chen, Yuan Li
PROCEEDINGS OF 2020 5TH INTERNATIONAL CONFERENCE ON MULTIMEDIA AND IMAGE PROCESSING (ICMIP 2020)
(2020)
Article
Optics
Xian-zhao Xia, Rui Chen, Pin-quan Wang, Yi-qiang Zhao
OPTOELECTRONICS LETTERS
(2019)
Proceedings Paper
Energy & Fuels
Xiaoxiao Jiang, Haiqiao Wei, Lei Zhou, Rui Chen
INNOVATIVE SOLUTIONS FOR ENERGY TRANSITIONS
(2019)
Article
Thermodynamics
Bo Zhang, Quan Hong, Yuanyuan Dou, Honghu Ji, Rui Chen
