Article
Chemistry, Physical
N. Abharana, K. K. Halankar, Velaga Srihari, Brindaban Modak, S. N. Jha, D. Bhattacharyya
Summary: This study investigates the structural and electronic changes of LiNixMnyCozO2 (LNMC) cathode materials in Li-ion batteries during charge/discharge cycles. The oxidation of Ni2+ ions is the primary charge compensation mechanism, while the oxidation states of Co and Mn ions remain relatively unchanged. The local structure around Ni undergoes reversible changes, while the local structures around Co and Mn show little variation. Higher Ni concentrations in LNMC electrodes result in smaller local structural changes during charging/discharging cycles, which was confirmed by theoretical simulations.
SOLID STATE IONICS
(2023)
Article
Electrochemistry
Calvin D. Quilty, Patrick J. West, Garrett P. Wheeler, Lisa M. Housel, Christopher J. Kern, Killian R. Tallman, Lu Ma, Steven Ehrlich, Cherno Jaye, Daniel A. Fischer, Kenneth J. Takeuchi, David C. Bock, Amy C. Marschilok, Esther S. Takeuchi
Summary: This study investigates the degradation of the cathode in NMC811/graphite batteries under extreme fast charging conditions. The results show that the oxidation state of Ni and Co changed more significantly under a 1C charge rate, but no surface reconstruction of NMC was observed in the recovered electrodes. Furthermore, a greater contraction of the unit cell volume under the 1C rate may reduce structural distortion caused by delithiation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Energy & Fuels
Sanjay Upadhyay, O. P. Pandey
Summary: Two-dimensional nanomaterials, especially molybdenum diselenide (MoSe2), have emerged as promising candidates for energy storage devices due to their unique physical, chemical, and electrical properties. Recent advances in MoSe2-based anode materials have shown significant outcomes in electrochemical storage applications. Challenges and future prospects for the development of MoSe2-based anode materials are also discussed.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Polymer Science
Xinyu Zhang, Mingzhen Gao, Wei Wang, Bing Liu, Xianbo Li
Summary: The study demonstrates the fabrication of flexible carbon nanofiber membranes containing uniformly distributed molybdenum dioxide nanocrystals using a needle-free electrospinning method. The resulting lithium-ion batteries show excellent cycling performance and structural stability, providing an effective pathway for the development of smart wearable devices and other applications.
Article
Nanoscience & Nanotechnology
Yuji Mahara, Naoyuki Nagasako, Hideaki Oka, Yasuhito Kondo, Satoru Kosaka, Hiroyuki Nakano, Takamasa Nonaka, Yoshinari Makimura
Summary: In this study, we found that Li1.12Mn0.74O1.60F0.40 positive electrodes with a loose-crystalline rock salt structure show stable and high capacity, with little change in the charge-discharge curve. The introduction of F-Mn bonds in the positive electrode suppresses the local spinel transition in Mn-based positive electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Alice J. Merryweather, Quentin Jacquet, Steffen P. Emge, Christoph Schnedermann, Akshay Rao, Clare P. Grey
Summary: Understanding the ion intercalation and degradation mechanisms is crucial for developing high-rate battery electrodes. Operando optical scattering microscopy is used to study single-particle kinetic state-of-charge heterogeneities and cracking in high-rate Li-ion anode materials. This study demonstrates the power of optical scattering microscopy in tracking rapid non-equilibrium processes that would be inaccessible with established characterization techniques.
Article
Chemistry, Physical
Yuji Mahara, Yoshinari Makimura, Hideaki Oka, Hiroyuki Nakano, Shin Tajima, Takamasa Nonaka, Tsuyoshi Sasaki
Summary: Research on loose-crystalline rock-salt LiMnO2 synthesized via a mechanochemical method shows high capacity and characteristic signal similar to spinel Li-Mn oxide. In-situ measurements indicate that the lithium storage process of LCRS-LMO is related to spinel-related structure changes during charge/discharge cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Jing Liu, Shan Gao, Zheng Si, Baozhao Shi, Huimin Li, Jinli Zhang, Wei Li
Summary: The addition of a lanthanum oxyfluoride (LaOF) coating layer on the cathode material improves the electrochemical performance and cycling stability of lithium-ion batteries.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
S. Bhattacharjee, Bhagyashree Mohanty, R. K. Parida, B. N. Parida
Summary: This report investigates the structure, vibration, optical, dielectric, transport, and magnetic features of double perovskite Sr2FeVO6. Multiple techniques such as XRD, SEM, XPS, Raman, FTIR, and UV-Visible spectroscopy are employed to study the material, revealing its monoclinic structure, dual oxidation state of Fe, suitable bandgap for photocatalytic activities, dielectric behavior consistent with Maxwell-Wagner model, and the contribution of hopping conduction mechanism to its transport properties. Furthermore, the ferromagnetic property of the material is confirmed through hysteresis curve analysis.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
F. Brahma, Bhagyashree Mohanty, S. Bhattacharjee, R. L. Hota, R. K. Parida, B. N. Parida
Summary: The polycrystalline ceramic SF-BT synthesized through high temperature solid state reaction exhibits multifunctional properties in terms of its structural, dielectric, electrical, and multiferroic characteristics. The material's dielectric properties are suitable for multilayer capacitors, with non-Debye type behavior and resistance mostly contributed by grains. The presence of room temperature ferroelectric and ferromagnetic properties suggest potential applications in microelectric and memory devices with reduced leakage behavior.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Jihyun Jang, Jun H. Ku, Seung M. Oh, Taeho Yoon
Summary: This study presents a novel strategy to increase the reversible capacity of electrode materials by altering the lithiation mechanism of transition metal oxides, exemplified by the conversion of MoO2 to CoMoO3. X-ray absorption spectroscopy and X-ray diffraction revealed the amorphization of the host structure due to the conversion of CoO to Co and Li2O. The high initial Coulombic efficiency of CoMoO3 is attributed to the highly conductive Co and MoO2, enhancing electronic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Zeru Syum, Tadesse Billo, Amr Sabbah, Aswin Kumar Anbalagan, Shaham Quadir, Adane Gebresilassie Hailemariam, Palani Sabhapathy, Chih-Hao Lee, Heng-Liang Wu, Li-Chyong Chen, Kuei-Hsien Chen
Summary: "This study reports high-performance and stable Cu2ZnSnS4 (CZTS) anode materials encapsulated by nitrogen-doped carbon (CZTS@N-C) for advanced lithium-ion battery applications. The nitrogen-doped carbon network improves the solid-electrolyte interphase, resulting in lower charge-transfer resistance and faster Li+ diffusion kinetics. The CZTS@N-C electrode demonstrates a significantly enhanced capacity of 710 mAh g+1 with 73% capacity retention after 220 cycles and superior rate performance."
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ahmad Jaradat, Chengji Zhang, Sachin Kumar Singh, Junaid Ahmed, Alireza Ahmadiparidari, Leily Majidi, Sina Rastegar, Zahra Hemmat, Shuxi Wang, Anh T. Ngo, Larry A. Curtiss, Matthew Daly, Arunkumar Subramanian, Amin Salehi-khojin
Summary: A cost-effective, flexible, and wearable Li-O-2 battery has been designed in this study, which can operate in pure oxygen, dry air, and ambient air. The battery demonstrates excellent cycling and electrochemical performance, showing potential for applications in flexible and wearable electronics.
Article
Physics, Multidisciplinary
R. Manikandan, Gargi Raina
Summary: In this study, pure semiconducting 2H-MoS2 nanomaterial was successfully synthesized using a facile and scalable hydrothermal route. The optimal reaction conditions were determined, and the structural and phase characteristics of the obtained MoS2 powders were analyzed. The results provide valuable insights for the low-cost fabrication of flexible nanoelectronic devices based on 2H-MoS2.
Review
Materials Science, Multidisciplinary
Na-Yeong Kim, Ilgyu Kim, Behnoosh Bornamehr, Volker Presser, Hiroyuki Ueda, Ho-Jin Lee, Jun Young Cheong, Ji-Won Jung
Summary: A suitable interface between the electrode and electrolyte is crucial for stable electrochemical performance in Li-ion batteries. Recent research has focused on nanoengineering approaches to build a stable electrode-electrolyte interface, and this review presents and summarizes some of these advances. It also assesses the impact of each approach and explores future perspectives on their feasibility and practicality. Overall, this review provides valuable insights for the development of a nanoengineered interphase design, which is essential for high-performance, thermally stable Li-ion batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yun Seok Choi, Woosung Choi, Won-Sub Yoon, Ji Man Kim
Summary: This article comprehensively investigates the negative fading phenomenon of iron oxide anodes with a highly ordered mesoporous structure. The study reveals that the negative fading originates from an optimization of the electrolyte-derived surface layer, which significantly contributes to the structural and cycle stability of nanostructured electrode materials.
Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Wontae Lee, Woosung Choi, Soyeong Yun, Eunkang Lee, Won-Sub Yoon
Summary: Research has shown that maximizing the reaction of -OH components by using crystal water can increase the extra capacity obtained from abnormal reactions, further optimizing the development of battery technology.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Taewhan Kim, Kyoung Ho Kim, Wontae Lee, Woosung Choi, Hyunyoung Park, Hyunwoo Kim, Jaesang Yoon, Yun Seok Choi, Jungho Lee, Ji Man Kim, Won-Sub Yoon
Summary: Mesoporous structures in transition metal oxides show higher reversible capacity and anomalous cycle behavior than bulk materials, attributed to their weaker Co-O and Co-Co bond strength which lead to more reversible conversion reactions, along with the further formation/decomposition of electrolytederived surface layer causing the negative fading phenomenon.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mihee Jeong, Wontae Lee, Soyeong Yun, Woosung Choi, Hyunyoung Park, Eunkang Lee, Jaeyoung Kim, Sung Jun Cho, Nam-Hee Lee, Hyun-Joon Shin, Won-Sub Yoon
Summary: Comparative study of NCM523 and NCA reveals that NCM523 exhibits better performance in the high-voltage region, with less anisotropic lattice distortion and wider Li-ion channels, as well as superior cyclability and thermal stability; therefore, the utilization of low-Ni layered cathode materials operated at high voltage is a strategic approach to expand the design factors of advanced LIBs.
ADVANCED ENERGY MATERIALS
(2022)
Review
Electrochemistry
Jaeyoung Kim, Sangbin Park, Sunhyun Hwang, Won-Sub Yoon
Summary: Lithium-ion battery development is a highly active research area, and the galvanostatic intermittent titration technique (GITT) is widely used in battery research. This mini review provides a detailed discussion on the theoretical and practical aspects of GITT analysis, including the derivation of diffusion coefficients equation and insight into methods for improving lithium-ion battery performance.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY
(2022)
Review
Electrochemistry
Hyunwoo Kim, Dong In Kim, Won-Sub Yoon
Summary: Lithium-ion batteries are reliable power supply systems, but higher energy density is needed. Sodium-ion batteries are actively studied as a low-cost alternative. Conversion-based materials are extensively researched for their higher theoretical capacity in both lithium-ion and sodium-ion batteries.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Kyoung Ho Kim, Taewhan Kim, Yun Seok Choi, Wontae Lee, Woosung Choi, Jaesang Yoon, Jin Seo Park, Yelim Kwon, Won-Sub Yoon, Ji Man Kim
Summary: In this study, a highly ordered mesoporous NiO electrode material with high reversible capacity is fabricated. The reversible capacity is attributed to both the conversion reaction of NiO framework and the reversible electrolyte derived surface layer.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Applied
Jaeyoung Kim, Wontae Lee, Jangwhan Seok, Eunkang Lee, Woosung Choi, Hyunyoung Park, Soyeong Yun, Minji Kim, Jun Lim, Won-Sub Yoon
Summary: All-solid-state batteries show promise for safe lithium-ion battery development, but face challenges due to interfacial reactions between solid electrolytes and high capacity cathodes. Research using electrochemical and X-ray analyses identified the cause of inhomogeneous reactions and emphasized the importance of electrochemo-mechanical integrity for system success.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Eunkang Lee, Wontae Lee, Jaeyoung Kima, Hyunwoo Kima, Minji Kima, Soyeong Yun, Sangsul Leeb, Junsik Kimc, Dohyung Park, Donghan Kim, Won-Sub Yoona
Summary: In this study, the effect of high-temperature conditions on the crystal and electronic structure of Ni-rich cathode materials was investigated using synchrotron-based X-ray techniques. The study found that high-temperature environments cause changes in the surface structure of Ni-rich cathode materials, leading to capacity loss and reduced electrochemical activity.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Soyeong Yun, Shoaib Muhammad, Jinhyuk Choi, Wontae Lee, Junwoo Yu, Hayeon Lee, Yongjae Lee, Won-Sub Yoon
Summary: In this study, Li2Ir0.75Sn0.25O3 material was synthesized and the highly reversible structural changes and cation migration were achieved through biphasic reaction, resulting in improved cycle performance and structural stability.
ACS ENERGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Soyeong Yun, Junwoo Yu, Wontae Lee, Hayeon Lee, Won-Sub Yoon
Summary: Li- and Mn-rich layered oxides have not been commercialized due to several issues, such as voltage decay, low rate capability, poor capacity retention, and high irreversible capacity. To address these problems, Nb doping in Li1.2Ni0.13Co0.13Mn0.53Nb0.01O2 cathode material is proposed. Nb doping strengthens the TM-O bond, stabilizes the layered structure, improves rate capability, suppresses phase transition, and enhances the structural and electrochemical integrity.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Eunkang Lee, Wontae Lee, Hyunwoo Kim, Minji Kim, Soyeong Yun, Jaeyoung Kim, Won-Sub Yoon
Summary: Understanding the thermal behaviors of energy storage materials in different charged states is crucial for improving thermal stability. This study investigates the crystallographic changes of Ni-based layered materials at increasing temperatures for three different states-of-charges. The onset temperature of disordered spinel structure formation is mainly affected by the intermediate tetrahedron size, while the completion temperature is determined by the Li contents in the Li layer. A highly charged state leads to rapid reduction of Ni ions and lattice expansion during thermally induced decomposition, increasing the risk of thermal runaway. These findings provide insights into the crystallographic behaviors of Ni-based layered materials and contribute to the design of rechargeable batteries with better thermal stability.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jaeyoung Kim, Wontae Lee, Jangwhan Seok, Minji Kim, Sangbin Park, Hyunbeom Lee, Young-Jun Kim, Won-Sub Yoon
Summary: All-solid-state lithium batteries with non-flammable solid electrolytes have safety advantages over batteries with flammable liquid electrolytes. However, interfacial issues between cathode materials and solid electrolytes pose challenges for commercialization. This study identifies critical factors for battery performance related to solid interfaces and lattice strains, and suggests that a compact electrode microstructure can alleviate the negative effects of increased lattice strain, leading to improved electrochemical performance.
Article
Chemistry, Physical
Gwan Hyun Choi, N. Clament Sagaya Selvam, Hyunwoo Kim, Young Sang Park, Jiyoon Jung, Myeong Gyun, Hyo Sang Jeon, Albert S. Lee, Won-Sub Yoon, Pil J. Yoo
Summary: The study demonstrates the design of heterointerface-structured catalysts with tunable active sites using an interfacial engineering strategy based on the anionic diffusion-limited Kirkendall effect. A FeCo/FeCoP catalyst with highvalent Fe sites was successfully synthesized through the phosphidation of carbon-encapsulated FeCo nanoparticles. The FeCo/FeCoP catalyst exhibited highly efficient and stable oxygen evolution reaction performance, highlighting the importance of understanding the water oxidation chemistry of heterointerface-structured catalysts for potential energy conversion applications.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Hyunwoo Kim, Chang-Dae Lee, Dong In Kim, Woosung Choi, Dong-Hwa Seo, Won-Sub Yoon
Summary: Molybdenum oxides, such as MoO2 and MoO3, have been extensively studied as anode materials for lithium-ion batteries. This study compares the charge storage behavior of these two oxides and reveals that MoO3 undergoes a conversion reaction, while MoO2 accommodates lithium as metallic lithium. The different metal-oxygen bonding properties of MoO2 and MoO3 are found to be the origin of their different electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
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)
