Article
Chemistry, Physical
Yanxing Zhang, Yudong Wang, Nengneng Xu, Xiao-Dong Zhou
Summary: By first principle calculations, it was found that Mo-doped-Ni/YSZ anode increases the barriers of hydrogen sulfide dissociation and sulfur atoms diffusion, especially in oxygen enriched conditions. This study provides a new theoretical insight into the sulfur poisoning tolerance of Mo-doped-Ni/YSZ at the interface.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Chong Lei, Michael F. Simpson, Anil V. Virkar
Summary: This study conducted asymmetric experiments using two probes to test the cathode and anode electrode processes in SOFCs, with results indicating good agreement between EIS and DC measurements and showing that the two electrodes need not be identical.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Nicharee Wongsawatgul, Soamwadee Chaianansutcharit, Kazunori Sato
Summary: The conventional solid oxide fuel cell (SOFC) anode is prone to deactivation when directly supplied with carbon-containing fuel. Modifying the anode through Co-alloying improves cell performance and stability, reducing the apparent activation energy for the electrochemical oxidation of CH4.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Jiashen Tian, Ryan J. Milcarek
Summary: This study investigates the failure process of the SOFC Ni-YSZ anode with D4 siloxane contamination, revealing that the anode failure is attributed to gas diffusion blockage by dense silicon dioxide layer formation. The results confirm the siloxane chemical adsorption deposition mechanism and show that the anode failure process with siloxane contamination is faster under polarization.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Heesu Hwang, Junsung Ahn, Hyunbae Lee, Jiwon Oh, Jaehwan Kim, Jae-Pyeong Ahn, Hong-Kyu Kim, Jong-Ho Lee, Young Yoon, Jin-Ha Hwang
Summary: Quantitative microstructural interpretations of Ni/YSZ cermets were conducted using deep learning and FIB-SEM analytics, eliminating subjective analysis and artifact issues.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Yijing Shang, Anne Lyck Smitshuysen, Miao Yu, Yuliang Liu, Xiaofeng Tong, Peter Stanley Jorgensen, Lea Rorato, Jerome Laurencin, Ming Chen
Summary: Solid oxide electrolysis cells (SOECs) are highly efficient and flexible energy conversion devices, but their long-term operation is limited by the degradation of Ni/yttria-stabilized zirconia (YSZ) fuel electrodes, which is recognized as one of the main causes for cell performance loss. This study investigates the microstructure evolution of Ni/YSZ electrodes after long-term operation in a CO/CO2 atmosphere. Results show significant loss of Ni in the active electrode and increased Ni fraction in the support layer after 1000 hours of operation at -1 A cm(-2). Ni coarsening was also observed. Similarly, Ni migration away from the electrode/electrolyte interface occurs during long-term CO2 electrolysis.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Satoru Sakama, Merika Chanthanumataporn, Katsunori Hanamura
Summary: This study experimentally investigated the influence of electrochemical reactions on carbon deposition in solid oxide fuel cells using methane as fuel. The results showed that electrochemical reactions play an important role in suppressing carbon deposition by providing oxygen ions and increasing water concentration inside the anode. The amount of H2O supplied in fuel and the amount of oxygen ion produced by electrochemical reaction are the determining factors for carbon deposition.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Ceramics
Moises R. Cesario, Glageane S. Souza, Francisco J. A. Loureiro, Allan J. M. Araujo, Joao P. F. Grilo, Samer Aouad, Haingomalala L. Tidahy, Daniel A. Macedo, Duncan P. Fagg, Cedric Gennequin, Edmond Abi-Aad
Summary: This study compares Ni-based alloy anodes with different Cu and Co compositions in the dry reforming of methane reaction, demonstrating that Co-containing samples exhibit higher reducibility, activity, and resistance to carbon deposition. These findings suggest that Co-based compositions are advantageous for use as anodes in the CO2 reforming of methane in SOFCs.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Patryk Blaszczak, Agata Ducka, Barbara Wolanin, Krzysztof Matlak, Grzegorz Machowski, Marta Przesniak-Welenc, Sea-Fue Wang, Beata Bochentyn, Piotr Jasinski
Summary: A novel one-pot synthesis route was developed to fabricate wormhole-like structures in porous YSZ and Ni-YSZ systems. This method achieved mechanically stable skeletons with nearly 50% open porosity without using additional pore-formers. The obtained Ni-YSZ anode demonstrated better long-term electrical stability and higher electrochemical activity due to the suppression of Ni structural changes and improved interfacial interaction with YSZ.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Materials Science, Multidisciplinary
Nicharee Wongsawatgul, Soamwadee Chaianansutcharit, Kazuhiro Yamamoto, Makoto Nanko, Kazunori Sato
Summary: This study presents a method to improve the stability of the Ni/YSZ cermet anode by incorporating Co into Ni, resulting in prolonged and stable performance with lower anodic polarization resistance when supplied with dry methane.
MATERIALS TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Katherine Develos-Bagarinao, Toshiaki Yamaguchi, Haruo Kishimoto
Summary: In order to improve the performance and stability of solid oxide cells (SOCs), this study compares anode-supported cells with thin films to those with conventional screen-printed yttria-stabilized zirconia (YSZ). It is found that thin film structures can suppress nickel diffusion and reduce resistance, resulting in excellent performance and durability in fuel cell operation.
Article
Materials Science, Multidisciplinary
Nicharee Wongsawatgul, Shinichi Momiyama, Soamwadee Chaianansutcharit, Kenichi Yoshida, Makoto Nanko, Kazunori Sato
Summary: The performance of Ni/SrO-doped CeO2 (SrDC) anode-supported cells, combined with Sm2O3-doped CeO2 (SDC) electrolyte layer, for direct supply of methane has been investigated. The 5 mol% SrO-doped CeO2 cell shows the highest performance without time-dependent degradation even at 750 degrees C, providing better performance with decreasing operating temperature than conventional Ni/YSZ anode-supported cells. The enhancement effect is attributed to the mixed ionic-electronic conduction of CeO2-based solid electrolytes.
MATERIALS TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Qaisar Khushi Muhammad, Michael Scherer, Alexander Karl Opitz, Stefanie Taibl, Christin Boehme, Marcus Rohnke, Juergen Janek, Shuang Gao, Juergen Fleig, Till Froemling
Summary: This study investigates the influence of mechanically induced dislocations on the electrical conductivity and oxygen transport in YSZ. Distinctly aligned regions with abundant and deficient dislocations are generated using advanced mechanical deformation methods. Electrical characterization reveals highly conducting effects of dislocation-induced strain within the material. Targeted oxygen tracer diffusion experiments confirm the enrichment of oxygen incorporation within the dislocation bundles. Therefore, mechanically induced dislocations have the potential to serve as a design element for tuning bulk ionic transport in YSZ.
Article
Crystallography
Miguel Morales, Sandra Garcia-Gonzalez, Michaela Plch, Dario Montinaro, Emilio Jimenez-Pique
Summary: Laser machining of NiO-YSZ composite in SOFCs can enlarge the electrode-electrolyte interface and improve cell performance, but it can also cause thermal damage. This study evaluated the microstructure changes and collateral damage caused by laser machining on sintered NiO-YSZ. By varying laser parameters, laser patterns were processed on sintered NiO-YSZ, revealing a limited heat-affected zone with microcracking, porosity reduction, and recrystallization. Chemical composition, phase transformation, and mechanical properties changes were minimal at the machined surface.
Article
Materials Science, Ceramics
Katsuhiro Nomura, Hiroyuki Shimada, Yuki Yamaguchi, Hirofumi Sumi, Yasunobu Mizutani, Yuji Okuyama, Woosuck Shin
Summary: Using various machine learning models, the space groups of Ba(Ce0.8-xZrx)Y0.2O3 (0 <= x <= 0.8) perovskite-type protonic conductors were predicted in a wide temperature range. The models were trained using data of chemical formulas, space groups obtained from high-temperature X-ray and neutron diffraction, and different datasets. The best accuracy and F1 score were achieved by the Random Forest model with a coordination number of 9 for oxygen of the A-site cation.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Younghwan Im, Hiroki Muroyama, Toshiaki Matsui, Koichi Eguchi
Summary: The basic property of the catalyst can influence the catalytic performance for NH3 decomposition by alleviating the associative desorption of N atom. The strength of the basic property can modify the electronic state of the impregnated Ru particles and enhance the desorption step of N atoms, thus improving the catalytic activity for NH3 decomposition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Hirokazu Kojima, Kensaku Nagasawa, Naoto Todoroki, Yoshikazu Ito, Toshiaki Matsui, Ryo Nakajima
Summary: The development of renewable energy technologies is crucial for achieving carbon neutrality. Stable storage and transportation of hydrogen in large quantities can maximize power utilization. A detailed understanding of the characteristics and operating methods of fluctuating power-driven water electrolysis technologies is essential for green hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Hirofumi Sumi, Hiroyuki Shimada, Konosuke Watanabe, Yuki Yamaguchi, Katsuhiro Nomura, Yasunobu Mizutani, Yuji Okuyama
Summary: This study investigates the effect of polarization resistances on current leakage and the distribution of relaxation times (DRT) analysis of electrochemical impedance spectra (EIS) for solid oxide cells (SOCs) with GDC electrolyte and protonic ceramic cells (PCCs) with BZYb electrolyte. The results show that the polarization resistances increase with increasing current density in SOC with GDC electrolyte, but exhibit the opposite tendency in PCC with BZYb electrolyte. This suggests that the effect of current leakage on polarization resistance is related to the conductivity of the electrolyte.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Ceramics
Konosuke Watanabe, Katsuhiro Nomura, Yuki Yamaguchi, Hirofumi Sumi, Masashi Mori, Yasunobu Mizutani, Hiroyuki Shimada
Summary: This study compares the electrochemical performance of composite cathodes in anode-supported protonic ceramic fuel cells using La(0.6)Sr(0.4)CoxFe(1-x)O(3-delta) and BaZr0.8Yb0.2O3-delta (BZYb) sintered at different temperatures. The cathodes sintered at 1100 degrees C showed better performance due to increased proton conductive network paths. PCFCs with LSCF-BZYb, LSC-BZYb, and LSF-BZYb composite cathodes exhibited power densities of 0.25, 0.19, and 0.07 W cm(-2), respectively, at an operating temperature of 600 degrees C. The presence of Co was found to be important for high catalytic activity in cathode reactions.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Wenwen Zhang, Hiroki Muroyama, Yuichi Mikami, Qingshi Liu, Xiaojuan Liu, Toshiaki Matsui, Koichi Eguchi
Summary: A novel triple-conducting composite cathode for protonic ceramic fuel cells, BaCo0.7(Zr0.8Y0.2)0.3O3-delta (BCZY), is developed by replacing cerium with zirconium in BaCo0.7(Ce0.8Y0.2)0.3O3-delta (BCCY) to construct strongly interacting interfaces. BCZY exhibits superior oxygen reduction reaction (ORR) activity and stability, with a polarization resistance of 0.25 omega cm2 at 600 degrees C and excellent performance maintained for 206 hours. The enhanced ORR activity and stability are attributed to the high concentration of active sites and the strong hydration capability at strongly interacting interfaces of Co-rich and Zr-rich phases introduced by interdiffusion of Co and Zr.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Chemistry, Physical
Hiroyuki Shimada, Hirofumi Sumi, Yuki Yamaguchi, Katsuhiro Nomura, Yasunobu Mizutani, Yoshinobu Fujishiro, Woosuck Shin
Summary: This study presents high-performance nanocomposite cathode and anode layers that greatly improve the power density of solid oxide fuel cells (SOFCs).
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Ceramics
Woosuck Shin, Yuki Yamaguchi, Mirano Horie, Hiroyuki Shimada, Katsuhiro Nomura, Hirofumi Sumi
Summary: This study investigates the application of porous metals in solid oxide fuel cells using machine learning methods. The process conditions for oxide layers and metal particles are examined, and it is found that random forest, a multi-output method, predicts the target variables with higher accuracy compared to neural network. Additionally, the relationship between the microstructure of metal supported cells and their power generation performance is discussed.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Hirofumi Sumi, Hiroyuki Shimada, Konosuke Watanabe, Yuki Yamaguchi, Katsuhiro Nomura, Yasunobu Mizutani, Ryuma Malik Matsuda, Masashi Mori, Keiji Yashiro, Takuto Araki, Yuji Okuyama
Summary: In this study, the overpotential of protonic ceramic fuel cells (PCFCs) was accurately estimated using distribution of relaxation times analysis and an equivalent circuit model. It was found that the activation overpotential in an open circuit state is not zero due to leakage current and interdiffusion of nickel and cobalt. In addition, intergranular cracks formed through nickel deposition increased the ohmic overpotential over time.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Shinji Naruse, Hiroki Muroyama, Toshiaki Matsui, Koichi Eguchi
Summary: This study investigates the application of the heteropolyanion of [PW12O40]3- as an anode redox mediator in redox flow polymer electrolyte fuel cells (PEFCs). A novel reduction method using the corrosion reaction of metals in strong acid aqueous solutions is explored. The results show that aluminum is the most effective metal for reducing oxidized heteropolyanions, while cobalt has lower fuel efficiency.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Toshiaki Matsui, Takashi Ozeki, Kazunari Miyazaki, Sadahiro Nagasaka, Hiroki Muroyama, Kenichi Imagawa, Yoshimi Okada, Koichi Eguchi
Summary: This study demonstrates the development of novel proton conductors that can operate at intermediate temperatures, especially 300-400°C, through a simple ion-exchange method. The electrical conductivity of the developed conductor was evaluated at different temperatures and its main charge carrier was identified as a proton. These findings open up the possibility of realizing new electrochemical devices that can operate at 200-400°C.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Shinji Naruse, Hiroki Muroyama, Toshiaki Matsui, Koichi Eguchi
Summary: This study semi-quantitatively determined the constituent amounts of PMA redox species using 31P NMR measurements, and found that the redox component of heteropolyanions has an impact on the performance of redox flow PEFCs.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yuji Okuyama, Keita Kasuga, Masaki Shimomura, Yuichi Mikami, Kosuke Yamauchi, Tomohiro Kuroha, Hirofumi Sumi
Summary: This study investigates the elementary reactions occurring within the electrode impedance of proton-conducting ceramic fuel cells. By observing the change in components when the gas on the anode was switched from light hydrogen to heavy hydrogen during the power generation and shutdown phases of the fuel cell, impedance components attributable to the steam production reaction were identified.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Applied
Wenwen Zhang, Hiroki Muroyama, Yuichi Mikami, Toshiaki Matsui, Koichi Eguchi
Summary: This study reports the surface manipulation of a triple-conducting cathode to enhance the oxygen reduction reaction (ORR) activity and CO2 tolerance in protonic ceramic fuel cells (PCFCs). The addition of an efficient catalyst coating significantly improves the ORR activity and reduces the polarization resistance of the cathode, while maintaining CO2 tolerance.
JOURNAL OF ENERGY CHEMISTRY
(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)
