Article
Electrochemistry
Nicholas J. Williams, Conor Osborne, Ieuan D. Seymour, Martin Z. Bazant, Stephen J. Skinner
Summary: Electrochemical impedance spectroscopy (EIS) is a powerful tool for understanding electro-chemical systems, and the distribution of relaxation times (DRT) calculation allows us to identify and analyze relaxation processes occurring in the system. By using Gaussian process (GP) regression, we propose a method to find a unique solution to the ill-posed DRT problem. Our analysis on EIS data from a solid-oxide fuel cell reveals the current-voltage relationship and sheds light on the charge transfer mechanism at the solid-gas interface.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Polymer Science
Jiping Wang, Yihuan Yu, Yaqian Guo, Wen Luo, Wenbing Hu
Summary: By utilizing four sets of interaction parameters to characterize the thermodynamic and kinetic aspects of local intrachain and interchain interactions between monomers, our study showed that the kinetic aspects of intrachain and interchain interactions have a greater impact on diffusion energy in polymers compared to their thermodynamic aspects, as demonstrated through kinetic Monte Carlo simulations.
Article
Chemistry, Physical
Suhas Nuggehalli Sampathkumar, Philippe Aubin, Karine Couturier, Xiufu Sun, Bhaskar Reddy Sudireddy, Stefan Diethelm, Mar Perez-Fortes, Jan Van Herle
Summary: This study tested a five-cell reversible solid oxide cell short stack and conducted cyclic durability testing. The results showed that the voltage degradation rate and fuel/steam utilization of the rSOC varied in different modes, and the post-cycle steady-state degradation rate indicated an improved lifetime.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Andrei Kulikovsky
Summary: The study introduces a new method for calculating distribution of relaxation times (DRT) in PEM fuel cells, which performs better in capturing the negative real part of impedance. By utilizing this method, successful analysis of DRT spectra in PEMFCs has been achieved, accurately capturing peaks related to oxygen transport and proton transport.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Polymer Science
Jiping Wang, Wenbing Hu
Summary: This study reveals that thermodynamic interchain interactions have no effect on stress relaxation, while the other three local interactions delay the later stage of stress relaxation in nonlinear viscoelasticity. Both the kinetic aspects of intrachain and interchain interactions dominate the initiation temperatures of nonlinear viscoelasticity, and their barriers determine the deviation extent of nonlinear viscoelasticity towards different types of liquids.
Article
Electrochemistry
Emanuele Quattrocchi, Ting Hei Wan, Alessio Belotti, Dohyung Kim, Simona Pepe, Sergei Kalinin, Mahshid Ahmadi, Francesco Ciucci
Summary: Electrochemical impedance spectroscopy (EIS) is widely used to study electrochemical systems, but interpreting the data is challenging. The distribution of relaxation times (DRT) has emerged as a complementary approach to resolve these issues. A novel deconvolution method based on deep neural networks (DNNs) has been proposed to analyze multidimensional EIS spectra effectively.
ELECTROCHIMICA ACTA
(2021)
Article
Energy & Fuels
Benjamin Koenigshofer, Pavle Boskoski, Gjorgji Nusev, Markus Koroschetz, Martin Hochfellner, Marcel Schwaiger, Dani Juricic, Christoph Hochenauer, Vanja Subotic
Summary: Combining renewable energy sources with reversible operated high temperature solid oxide cells (rSOC) shows promise for storing and supplying clean energy. Experimental investigations on the performance of a rSOC stack under system relevant gas mixtures and operational conditions revealed different advantages and disadvantages between steam electrolysis (EC) and fuel cell (FC) operation.
Article
Energy & Fuels
Zetao Li, Huihua Feng, Boru Jia, Zhengxing Zuo, Bing-Ang Mei
Summary: For the thermal impedance spectroscopy measurement of EDLC systems, this study uses distribution of relaxation times (DRT) analysis to interpret the thermal processes. The DRT plots show three distinct peaks, with the area representing the thermal resistance contribution and the time constant representing the speed of each process. The peaks correspond to heat conductions in solid, interfacial, and fluid-involved paths, respectively. The area of peaks is strongly affected by electrode compression, and replacing the fluid or changing solid-fluid ratio can cause a shift in the time constant of fluid-involved heat transfer peak.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Michael Braig, Roswitha Zeis
Summary: Polybenzimidazole-based electrochemical hydrogen pumps (EHPs) can separate hydrogen from gas mixtures at low cell overpotential. They have robustness towards catalyst poisoning by common impurities in steam reformate and can operate at temperatures up to 180 degrees C. The physico-chemical processes in EHPs supplied with H2 contaminated with N2, CO2, and CO were investigated using electrochemical impedance spectroscopy (EIS) and distribution of relaxation times (DRT) analysis. Five different processes were identified in the DRT spectrum, including proton transport, hydrogen evolution and oxidation reactions, mass transport in the anode gas diffusion electrode, and movement of phosphoric acid anions.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Analytical
Jia Wang, Qiu-An Huang, Weiheng Li, Juan Wang, Yuxuan Bai, Yufeng Zhao, Xifei Li, Jiujun Zhang
Summary: EIS is an important diagnostic tool, but identifying pseudo peaks decoded by the DRT/DDC method remains a challenge. This study presents new insights from the perspective of symmetry, categorizing pseudo peaks into three types and quantitatively evaluating the decoded peaks. The solution to pseudo peaks decoded by the DRT/DDC method was validated through simulated impedance spectra.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Denis Osinkin, Nina Bogdanovich
Summary: Strontium and cobalt-free LaNi0.6Fe0.4O3-d is a promising electrode for solid-state electrochemical devices, with high electrical conductivity, suitable thermal expansion coefficient, tolerance to chromium poisoning, and chemical compatibility with zirconia-based electrolytes. However, its disadvantage is the low oxygen-ion conductivity. To increase the conductivity, a complex oxide based on doped ceria is added, which decreases the electrode's conductivity. Therefore, a two-layer electrode with sintering additives is recommended.
Article
Electrochemistry
D. V. Kolosnitsyn, D. A. Osipova, E. V. Kuzmina, E. V. Karaseva, V. S. Kolosnitsyn
Summary: The possibility of using the Distribution of Relaxation Times (DRT) function to analyze the electrochemical impedance spectra of lithium-lithium cells was studied. A comparative analysis of the impedance spectra obtained during long-term storage at different temperatures was performed using either equivalent electrical circuits or the DRT function. The analysis by the DRT function allows estimating the number of layers and evaluating the physical parameters of the surface film on the lithium electrodes. It was found that the number of layers and resistance of the surface film decreased with long exposure at 30°C, and the physical properties of the film varied with temperature, leading to a decrease in total resistance. The DRT function analysis of the impedance spectra of lithium-lithium cells is more informative than using equivalent electrical circuits.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Jiangong Zhu, Michael Knapp, Xinyang Liu, Peng Yan, Haifeng Dai, Xuezhe Wei, Helmut Ehrenberg
Summary: This study introduces a method based on battery impedance and distribution of relaxation times (DRT) analysis to separate and interpret battery interfacial processes successfully, assigning them accurately to distinct boundaries. By investigating the temperature changes of cycled commercial batteries, the reliability of this method in identifying different interfacial processes was confirmed.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2021)
Article
Electrochemistry
Erik Goldammer, Julia Kowal
Summary: The study presents a novel approach to derive the distribution of relaxation times (DRT) in lithium-ion batteries (LIBs) by evaluating relaxation voltage after a current pulse. This method improves the resolution of low-frequency impedance changes and identified degradation mechanisms, contributing to enhancing reliability and safety of LIBs. It was experimentally validated and found applicable in battery management systems.
Article
Electrochemistry
Hirofumi Sumi, Hiroyuki Shimada, Yuki Yamaguchi, Katsuhiro Nomura, Kazuhisa Sato
Summary: Small-scale planar solid oxide fuel cells (SOFCs) called button cells or coin cells are widely used for fundamental research. The performance of large-scale cells is inferior to that of button cells, but the precise reason is unclear. In this study, electrochemical impedance spectroscopy (EIS) was performed on button cells with different cathode areas and varying fuel utilization, and distribution of relaxation times analysis was conducted to deconvolute the EIS. The power density decreased with increasing cathode diameter for the button cells, and the polarization resistances associated with the gas diffusion process increased for cells with large cathode areas and increasing fuel utilization. According to a simple simulation, the power density at 0.75 V was estimated to be 0.169 W/cm2 for a large-scale cell with dimensions of 10 x 10 cm2, smaller than that for a button cell with a cathode diameter of 6 mm (0.730 W/ cm2 at Uf = 0.04).
ELECTROCHIMICA ACTA
(2023)
Article
Instruments & Instrumentation
Andre Weber
Summary: Solid oxide cells have gained interest as efficient electrochemical energy converters. This paper discusses the impact of different testing environments and operating conditions on the CV characteristics of high performance cells.
TM-TECHNISCHES MESSEN
(2022)
Article
Electrochemistry
Morio Tomizawa, Keisuke Nagato, Kohei Nagai, Akihisa Tanaka, Marcel Heinzmann, Andre Weber, Gen Inoue, Masayuki Nakao
Summary: Micropatterns applied to proton exchange membranes can improve the performance of polymer electrolyte fuel cells by increasing the reaction area for oxygen reduction. However, they also negatively affect gas diffusion and increase vulnerability to flooding. Comprehensive optimization of composition, geometry, and operating conditions is necessary for optimal performance.
JOURNAL OF ELECTROCHEMICAL ENERGY CONVERSION AND STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Marius Mueller, Johannes Schmieg, Sebastian Dierickx, Jochen Joos, Andre Weber, Dagmar Gerthsen, Ellen Ivers-Tiffee
Summary: This study investigated the suitability of magnetron-sputtered indium in Li(In)/LLZO/Li(In) symmetrical model cells as an interfacial modification. The results showed that annealed 300 nm indium layers provided a surface coverage of over 80% at the Li(In)/LLZO interfaces, with the best reproducibility and a supreme interface resistance of 12.4 Ω.cm(2). The critical current density was determined to be 200-500 μA/cm(2) at a charge of 100-250 μAh, and stability of the cell was affected at current densities above 500 μA/cm(2).
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Marius Mueller, Henry Auer, Alexander Bauer, Sven Uhlenbruck, Martin Finsterbusch, Katja Waetzig, Kristian Nikolowski, Sebastian Dierickx, Dina Fattakhova-Rohlfing, Olivier Guillon, Andre Weber
Summary: This study provides a detailed assessment of impedance measurement deviations for two types of Li-ion conducting ceramic electrolyte samples. By introducing a harmonized testing procedure, the deviations among laboratories were reduced, indicating high measurement precision with a small total error.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Ceramics
Jun Zhang, Christian Lenser, Niklas Russner, Andre Weber, Norbert H. Menzler, Olivier Guillon
Summary: This article reports on the fabrication of a cost-effective anode-supported solid oxide fuel cell (SOFC) using gadolinia-doped ceria (GDC) as the electrolyte. The results show that the cell exhibits low ohmic resistance and high power density at intermediate temperature, indicating its great potential for commercial applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Marcel Heinzmann, Andre Weber
Summary: In the development of fuel cells, electrochemical models are necessary for simulations and predictions. These models consider the physicochemical processes in the cell and provide information about internal states. However, parameterizing these models is challenging due to the large number of parameters needed for a specific cell.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Serena Carelli, Yan Ying Lee, Andre Weber, Wolfgang G. G. Bessler
Summary: This article presents the development, parameterization, and experimental validation of a pseudo-three-dimensional (P3D) multiphysics aging model for a 500 mAh lithium-ion pouch cell. The model includes electrochemical reactions for solid electrolyte interphase formation and lithium plating. It accurately predicts capacity loss and visualizes aging colormaps under various operating conditions. Additionally, a simplified model is used to derive aging indicators for fast charging limits.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Yaoyu Ren, Timo Danner, Alexandra Moy, Martin Finsterbusch, Tanner Hamann, Jan Dippell, Till Fuchs, Marius Mueller, Ricky Hoft, Andre Weber, Larry A. Curtiss, Peter Zapol, Matthew Klenk, Anh T. Ngo, Pallab Barai, Brandon C. Wood, Rongpei Shi, Liwen F. Wan, Tae Wook Heo, Martin Engels, Jagjit Nanda, Felix H. Richter, Arnulf Latz, Venkat Srinivasan, Juergen Janek, Jeff Sakamoto, Eric D. Wachsman, Dina Fattakhova-Rohlfing
Summary: The garnet-type phase Li7La3Zr2O12 (LLZO) is a promising oxide solid electrolyte for solid-state batteries (SSBs). This perspective article focuses on the challenges of integrating LLZO into composite cathodes and discusses the critical issues needed to achieve all-solid-state LLZO-based batteries with enhanced safety and performance. The insights gained from a comprehensive literature survey of LLZO-cathode interfaces are used to guide the development of LLZO-based SSBs.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Paul W. Hoffrogge, Daniel Schneider, Florian Wankmueller, Matthias Meffert, Dagmar Gerthsen, Andre Weber, Britta Nestler, Matthias Wieler
Summary: FIB-SEM measurements are used to study the as-processed Ni-YSZ solid oxide fuel cell (SOFC) anodes. Multiphase-field simulations are then conducted to investigate the microstructure and performance of the anodes under different operating conditions. The results are used to estimate anode performance and long-term stability using a transmission-line model (TLM).
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Yanting Liu, Florian Wankmueller, Tibor Peter Lehnert, Martin Juckel, Norbert H. Menzler, Andre Weber
Summary: This study investigates the correlation between microstructural changes and electrochemical performance in low temperature solid oxide cells under high temperature conditions, revealing the unexpected continuous improvement in electrode performance despite microstructural degradation such as nickel agglomeration.
Article
Electrochemistry
Felix Kullmann, Cedric Grosselindemann, Luis Salamon, Franz-Martin Fuchs, Andre Weber
Summary: This study utilizes electrochemical impedance spectroscopy to investigate the polarization processes in an electrolyte supported solid oxide cell at various temperatures. Additional processes that affect the electrolyte processes are discovered and analyzed.
Article
Electrochemistry
Sadhana Golani, Florian Wankmueller, Werner Herzhof, Christian Dellen, Norbert H. Menzler, Andre Weber
Summary: This study compares the performance of FESCs with GDC interlayers fabricated from different commercially available powders. The results show significant differences in cell performance, which can be attributed to the amount and continuity of the residual SZO interphase.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Hoon Seng Chan, Lars Blaeubaum, Dandapani Vijayshankar, Fridolin Roeder, Christine Nowak, Andre Weber, Arno Kwade, Ulrike Krewer
Summary: In this study, in-depth analyses were conducted to investigate the ageing of negative electrodes with different particle size distributions. The analyses included discharge behaviour, electrochemical impedance analysis, and for the first time, nonlinear frequency response analysis. The results showed that the ageing impacts were more significant on the positive electrode for fine to medium-sized particles, leading to increased impedance and nonlinear responses. However, for coarse and broad negative particles, the impedance and nonlinear responses at negative electrodes decreased due to improved kinetics from micro-cracking. Additionally, the nature of the charge transfer process during ageing was found to change: it became asymmetric for fine and medium-sized negative particles at the positive electrode, while it became symmetric for coarse and broad negative particles at the negative electrode.
BATTERIES & SUPERCAPS
(2023)
Review
Engineering, Chemical
Marius Mueller, Markus Klinsmann, Ulrich Sauter, Jean-Claude Njodzefon, Andre Weber
Summary: In the global quest to renounce from fossil fuels and produce renewable hydrogen, solid oxide electrolyzers (SOE) have gained attention due to their high efficiency resulting from high operating temperatures. Physical modeling is essential in the development of SOEs, as it lowers experimental costs and provides insight into complex physical processes occurring within the cell at different scales.
CHEMIE INGENIEUR TECHNIK
(2023)
Article
Chemistry, Physical
F. Kullmann, M. Mueller, A. Lindner, S. Dierickx, E. Mueller, A. Weber
Summary: Impedance spectroscopy is a powerful tool for analyzing performance limiting processes in various electrochemical systems. However, for multiphase electrodes, the simple approach of correlating each peak in the distribution of relaxation times (DRT) with a single polarization process fails. In this study, a physicochemically meaningful two-channel transmission line model is developed to analyze the coupling of transport and reaction in ceria based fuel electrodes applied in solid oxide cells.
JOURNAL OF POWER SOURCES
(2023)
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)
