Article
Energy & Fuels
Dongcheul Lee, Byungmook Kim, Chee Burm Shin, Seung-Mi Oh, Jinju Song, Il-Chan Jang, Jung-Je Woo
Summary: In this study, a modeling approach is presented to estimate the combined effects of cyclable lithium loss and electrolyte depletion on the capacity and discharge power fades of lithium-ion batteries (LIBs). The validity of the modeling methods is demonstrated by comparing the results with experimental data. This methodology provides an effective way to estimate the discharge capacity and usable discharge power under different degradation modes.
Review
Chemistry, Physical
Alexis Geslin, Bruis van Vlijmen, Xiao Cui, Arjun Bhargava, Patrick A. Asinger, Richard D. Braatz, William C. Chueh
Summary: Considering use cases and selecting the right features are crucial in developing battery lifetime prediction models. Prediction of cell-to-cell variability between identically cycled cells requires features that are not reliant on cycling conditions. While features encoding cycling conditions can boost model accuracy, they may lead to reduced transferability on identically cycled cells.
Article
Energy & Fuels
Casey Jones, Bing Li, Vikas Tomar
Summary: This study focused on simulating the operational effects of damaged Li-ion batteries in abusive environments, finding that punctures caused temperature spikes, sharp drops in capacity, and end of life within 43 cycles after the damage.
Article
Chemistry, Multidisciplinary
Chao Huang, Zou-Qiang Fang, Zhi-Jie Wang, Jian-Wei Zhao, Shi-Xi Zhao, Li-Jie Ci
Summary: Li-rich high-Mn material Li1.7Mn0.8Co0.1Ni0.1O2.7 (HM-811) showed improved electrochemical performance with morphology regulation and LiAlF4 coating, providing a new approach for developing high performance cathode materials for next-generation Li-ion batteries.
Article
Chemistry, Physical
Junho Bae, Hyuntae Bae, Jihun Cho, Jaebeom Jung, Yunseok Choi, Youngsik Kim
Summary: The Water-in-Battery (WiB) system is a concept that utilizes water as functional elements to manage battery heat and eliminate fires. It acts as a coolant and extends battery life under normal conditions, while also delaying thermal runaway in abuse conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Energy & Fuels
Haihui Chen, Hanying Xu, Yingying Zeng, Jinhua Cai, Limin Liu, Tianyi Ma, Fang Wang, Xinping Qiu
Summary: This study investigates the effects of Mn2+ on NSi@PANi electrodes in both half and full cells, and elucidates the mechanism for the fast capacity fade of LiMn2O4/NSi@PANi full cell. The results show that Mn2+ significantly accelerates the capacity fade of NSi@PANi anode in full cells, mainly due to the excessive growth of solid electrolyte interphase caused by the extra consumption of active Li+ and electrolytes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Jochen Stadler, Carsten Krupp, Madeleine Ecker, Jochen Bandlow, Bernd Spier, Arnulf Latz
Summary: In this study, 60 large format automotive-grade lithium-ion pouch cells with graphite/NMC chemistry were tested to analyze the aging factors affecting cyclic capacity fade. The results showed that temperature and the ratio between charge depleting and charge sustaining cycling had the greatest impact on cyclic aging, while charging power had little effect. The study emphasized the importance of considering interdependencies between aging factors for modeling purposes.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Abraham Alem Kebede, Md Sazzad Hosen, Maarten Messagie, Henok Ayele Behabtu, Towfik Jemal, Joeri Van Mierlo, Thierry Coosemans, Maitane Berecibar
Summary: This paper presents the development of a combined lifetime model for estimating the capacity fade and internal resistance increase of a large capacity NMC cell in the automotive industry. The analysis reveals that cycling capacity fade is influenced by various factors, while calendar capacity fade is affected by storage state and temperature. The study introduces a semi-empirical fitted equivalent circuit model-based lifetime model to address limitations in aging models and validate its accuracy.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Lei Ding, Dandan Li, Fanghui Du, Daoxin Zhang, Sihang Zhang, Ruizhang Xu, Tong Wu
Summary: This research investigates the compression behavior of separators and the impact on ion transport. Dry-processed separators exhibit better compression resistance and retention of ionic conductivity, while wet-processed separators show poorer compression resistance and rate-dependence. Excessive compression causes the flow and creep of micropores, leading to deterioration of ion migration and decrease in discharge capacity. Therefore, balancing compression resistance and micropore homogeneity is crucial for the manufacturing of separators in order to achieve long cycle life of lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Jeffrey Belt, Alexander Sorensen
Summary: This study performed thermal runaway propagation analysis at the module and cell level using Samsung 30Q 18650 cylindrical cells. Measurements such as cell enthalpy, maximum thermal runaway temperature, and thermal runaway onset and initiation temperatures were collected and shown to be consistent by means of accelerated rate calorimetry (ARC). The study demonstrated the successful use of a module-level thermal runaway propagation mitigation strategy to absorb cell energy during a failure event and prevent thermal runaway propagation between cells. However, module level tests showed significantly higher average maximum temperatures compared to cell level tests, highlighting the importance of evaluating both levels of thermal response.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Obinna Egwu Eleri, Frederik Huld, Julie Pires, Wakshum Mekonnen Tucho, Philipp Schweigart, Ann Mari Svensson, Fengliu Lou, Zhixin Yu
Summary: This study investigated the capacity fade mechanism of activated carbon electrodes in Li-ion electrolyte through electro-chemical impedance spectroscopy (EIS) and post-mortem electrode characterizations. It was found that surface transformation and charge transfer impedance changes occurred during the ageing process, leading to reduced surface area and accessibility of electrolyte moieties. The degradation products from LiPF6 salt decomposition and carbonate solvent decomposition were identified, along with increased defects in the electrode as cycling progressed. The capacity fade was therefore attributed to the synergistic effect of electrolyte degradation and active material transformation.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Minseok Song, Munnyeong Choi, Song-Yul Choe
Summary: In this paper, a new strategy for cold start-up is proposed using an electrochemical, thermal, and mechanical life model. The developed model is experimentally validated and further analysis provides detailed mechanisms of degradation. A new charging algorithm is also developed targeting the start-up strategy at subzero temperature, which has shown improved charging efficiency and cycle life compared to traditional methods.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Electrochemistry
Paul Gasper, Nils Collath, Holger C. Hesse, Andreas Jossen, Kandler Smith
Summary: In this study, a machine-learning assisted model identification method is used to fit battery aging data, resulting in a model with approximately half the mean absolute error of a human expert model. The accuracy of the model is validated by comparing predictions to actual test results through conversion to a state-equation form. The results of this study demonstrate that the use of the new model identification method reduces uncertainty in life prediction and enables more confident estimates of energy storage system lifetime.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Energy & Fuels
Xin Sui, Maciej Swierczynski, Remus Teodorescu, Daniel-Ioan Stroe
Summary: This study conducted long-term aging experiments on lithium-ion batteries, established aging models, and analyzed the effects of time, temperature, and state-of-charge on battery performance. The results can help prolong battery life and enhance safety.
Article
Energy & Fuels
J. G. Qu, Z. Y. Jiang, J. F. Zhang
Summary: This study investigates the degradation of lithium-ion batteries (LIBs) during fast charging, focusing on the effects of operating temperature and current rate. The results reveal that the most significant factor influencing battery capacity fade changes from lithium plating to the growth of the solid-electrolyte interface (SEI) with increasing operating temperatures. High operating temperatures can alleviate capacity fade at higher current rates, while accelerating capacity fade at lower current rates. The study also analyzes the changes in electrode morphology and identifies the main degradation mechanisms as electrode material detachment, electrode particle cracking, SEI growth, lithium plating, and structural changes in layered material crystal. These findings provide insights for the development of fast-charging strategies and battery management system design.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Electrochemistry
Markus Binder, Magdalena Mandl, Steve Zaubitzer, Margret Wohlfahrt-Mehrens, Stefano Passerini, Olaf Boese, Michael A. Danzer, Mario Marinaro
Summary: By using sodium cyclopentadienide dissolved in tetrahydrofuran as the electrolyte, the sodium metal batteries can achieve improved performance and stability, avoiding unfavorable dendritic growth, and exhibiting good ionic conductivity.
Article
Chemistry, Physical
Felix Katzer, Michael A. Danzer
Summary: The article introduces an in-situ detection method for detecting lithium deposition, which analyzes battery behavior for LD detection and adjusts charging rate based on detection results. Multiple methods are employed to detect LD, including coulombic efficiency, dilation method, differential voltage analysis, and impedance relaxation method. Characteristic frequencies are identified using impedance spectroscopy for mechanistic interpretation of the phenomena.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Felix Katzer, Leonard Jahn, Markus Hahn, Michael A. Danzer
Summary: A novel model-based approach was developed to distinguish between normal and lithium deposition-affected relaxation processes during fast charging of lithium-ion batteries. This method enables the classification of charging processes based on accelerated aging, with remarkable sensitivity and automated detection of lithium deposition.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Leonard Jahn, Felix Katzer, Michael A. Danzer
Summary: The study uncovers the impact of lithium deposition on cell voltage and thickness, demonstrating that dilation behavior and voltage analysis can be used to detect LD, proposing a Bayes algorithm for combined data detection.
JOURNAL OF POWER SOURCES
(2022)
Article
Polymer Science
Pavel Milkin, Michael Danzer, Leonid Ionov
Summary: In this study, the electromechanical properties of self-healing polymer-carbon composites were thoroughly investigated, revealing a strong dependence on the viscoelastic properties of the polymers. Low molecular polymer composites showed high conductivity and rapid restoration of electrical and mechanical properties but exhibited brittleness, while high relaxation time polymer composites demonstrated self-healing capabilities but had inferior electrical properties.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Energy & Fuels
Markus Muehlbauer, Fabian Rang, Herbert Palm, Oliver Bohlen, Michael A. Danzer
Summary: This research proposes a methodological framework for identifying Pareto-optimal solutions of power flow control strategies in battery energy storage systems and aims to apply it in operational decision-making. The framework uses the Hyper Space Exploration methodology to quantify trade-offs in various use cases and system configurations. Simulation results show the correlation between design variables, use case variables, and target indicators, enhancing understanding of the trade-offs between the indicators.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Felix Schomburg, Robin Drees, Michael Kurrat, Michael A. Danzer, Fridolin Roeder
Summary: This study introduces a novel method to evaluate the growth of the solid-electrolyte interphase (SEI) during the formation of lithium-ion batteries with low experimental effort. By testing coin cells under pseudo-open-circuit conditions and evaluating the differential voltage, the capacity loss caused by SEI formation in the first cycle is estimated. Various methods are compared to identify the SEI growth curve, which is then used to compare different electrolytes. The results indicate that the SEI growth can be explained by a combination of interstitial diffusion and electron tunneling, with the latter dominating at the beginning of formation, and the transition between these mechanisms is influenced by the electrolyte.
Article
Energy & Fuels
Tom Ruether, Christian Plank, Maximilian Schamel, Michael A. Danzer
Summary: Serially connected batteries in a battery pack display cell-to-cell variation in electrochemical behavior that increases over time. Choosing the best circular economy option for aged or defective battery packs requires comprehensive testing, analysis, and data. Remanufacturing involves replacing defective or diverging cells in the battery pack. Virtual battery packs are created using measurements from 12 individual batteries of the same type to detect significant inhomogeneity in serial connections. Impedance-based features are extracted and analyzed to determine detectability and sensitivity to cell-to-cell variations, aging condition, and aging mechanism. The low-frequency minimum feature shows the highest sensitivity in detecting outliers in a large number of cells.
Article
Electrochemistry
Felix Katzer, Tom Ruther, Christian Plank, Felix Roth, Michael A. Danzer
Summary: This study provides a comprehensive analysis of polarization behavior during fast-charging of lithium-ion batteries, revealing insights into lithium deposition and cell behavior. Sensitivity analysis identifies the migration of lithium ions through the SEI as the most suitable process for detection. The results demonstrate high sensitivity and reliability of the proposed method.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Felix Katzer, Patrick Moessle, Maximilian Schamel, Michael A. Danzer
Summary: The impedance-based detection method for retrospective identification of lithium deposition was used in a long-term aging study. The method proved to be sensitive and reliable in detecting minor lithium deposition, making it suitable for adaptive fast charging control and identification of charging rate limits.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Jonathan Schubert, Lukas Grossmann, Stefan Seidlmayer, Karl-Heinz Pettinger, Ralph Gilles, Michael A. Danzer
Summary: This study aims to identify the dominant active species in Saltwater Batteries with dual-ion electrolyte by conducting cyclic voltammetry and full cell measurements. The results show that the cathode only (de)intercalates lithium ions, while the anode can react with both sodium and lithium ions. However, lithium is found to be the dominant active species in the dual-ion battery.
Article
Chemistry, Multidisciplinary
Max Stevenson, Sebastian Weiss, Gihoon Cha, Maximilian Schamel, Leonard Jahn, Daniel Friedrich, Michael A. Danzer, Jun Young Cheong, Josef Breu
Summary: A coating composed of osmotically delaminated sodium fluorohectorite (Hec) nanosheets onto lithium nickel cobalt manganese oxide (NCM) cathode material (Hec-NCM) is reported. The coating wraps around NCM, providing mechanical stability and forming a multi-functional cathode-electrolyte interphase (CEI) layer. The Hec-NCM demonstrates outstanding capacity retention and electrochemical performance even after exposure to the ambient atmosphere for 6 months, suggesting the potential for significantly improving long-term stability and activity of cathode materials by creating an artificial CEI layer.
Article
Electrochemistry
Tom Ruether, Ion Victor Gosea, Leonard Jahn, Athanasios C. Antoulas, Michael A. Danzer
Summary: The Loewner method (LM) is applied to lithium-ion batteries to identify and analyze processes. It is compared with the generalized DRT using synthetic data and real battery data. The LM shows advantages in process assignment and interpretation of minor gains, while the generalized DRT performs better in determining lumped elements and resistive-inductive processes.
Article
Chemistry, Physical
Fabian Menz, Bruno Bausch, Joaquin Klee Barillas, Olaf Boese, Michael A. Danzer, Markus Hoelzle
Summary: This research introduces a method for designing safe battery systems using a heat-absorbing barrier and validates its effectiveness through modeling and testing. The results demonstrate effective prevention of thermal runaway propagation with the barrier, highlighting the importance of optimizing barrier thickness in the design strategy.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Patrick Mossle, Tobias Tietze, Michael A. Danzer
Summary: This article applies a multiobjective optimization framework called hyperspace exploration to automate the tuning process of Kalman filters for lithium-ion batteries. Four key performance indicators are used to describe, validate, and compare the filter performance. This method not only saves time but also provides a new approach to evaluate filter parameters.
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)
