Article
Chemistry, Physical
Ming-Ying Zhou, Jian-Bang Zhang, Chi-Jyun Ko, Kuo-Ching Chen
Summary: In this study, a time-saving approach for measuring the open-circuit voltage (OCV) of a battery is proposed. By using a simplified first-order RC circuit model, the OCV at each state of charge (SOC) can be computed without the need for complete voltage relaxation information. Experimental results demonstrate that this approach significantly reduces the measurement time (usually less than 6 minutes) while maintaining high accuracy (usually less than 3 mV) compared to traditional methods.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Jinpeng Tian, Rui Xiong, Weixiang Shen, Fengchun Sun
Summary: The proposed method in this paper utilizes offline OCV test results to estimate aging diagnosis of lithium ion batteries at an electrode level, achieving fast diagnosis. The estimated aging parameters are close to the results obtained by offline tests, enabling reconstruction of OCV-Q curves for battery capacity estimation with high accuracy. The influence of voltage ranges on estimation results is also discussed in the study.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Hao Cui, Dongsheng Ren, Mengchao Yi, Sixuan Hou, Kai Yang, Hongmei Liang, Xuning Feng, Xuebing Han, Youzhi Song, Li Wang, Xiangming He
Summary: The wetting process is crucial in battery production efficiency and quality, especially for large-format or high-energy density lithium-ion batteries. This study proposes a method for in-situ monitoring of the open circuit voltage during electrolyte filling, providing valuable information about the process.
Article
Chemistry, Analytical
Junfu Li, Ming Zhao, Changsong Dai, Zhenbo Wang, Michael Pecht
Summary: A mathematical method for acquiring open-circuit potential curves of lithium-ion batteries was developed, using known open-circuit potentials of positive and whole-cell voltages at low discharge rates. The method utilizes hyperbolic tangent and exponential functions to describe the negative electrode's open-circuit potential against different lithiation states, with unknown coefficients identified using least squares fitting. Testing on five types of batteries demonstrated the accuracy and robustness of the method.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Energy & Fuels
Yizhao Gao, Ziqiang Sun, Dong Zhang, Dapai Shi, Xi Zhang
Summary: This paper proposes a method to establish the relationship between electrode open-circuit potential (OCP) and stoichiometry, and optimizes OCP and hysteresis factor for estimating full-cell OCP. Experimental results show that the proposed method achieves accurate voltage prediction for the battery.
Article
Energy & Fuels
Zhong Ren, Changqing Du, Zhongyi Wu, Jianbo Shao, Wenjun Deng
Summary: This paper investigates the effects of different current rates on OCV tests and their impact on SoC estimation algorithms. The results show that the OCV-SoC curve obtained from the 0.5C incremental OCV test performs best at 25 degrees C and 45 degrees C, while the 0.2C incremental OCV test performs best at 0 degrees C. Additionally, a 3-hour relaxation time is optimal at higher temperatures, while a 4-hour relaxation time is recommended at 0 degrees C.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Computer Science, Information Systems
Yimin Qian, Jian Zheng, Kai Ding, Hui Zhang, Qiao Chen, Bei Wang, Yi Wang, Zengrui Huang
Summary: This paper proposes an effective method for fast measurement of battery open circuit voltage using a relaxation model and genetic algorithm for parameter optimization. The method can accurately estimate the battery's open circuit voltage in a short time and is effective under different conditions.
Article
Energy & Fuels
Haitao Yuan, Naxin Cui, Changlong Li, Zhongrui Cui, Long Chang
Summary: This paper proposes a fast diagnostic method for internal short circuit (ISC) based on local-gravitation outlier detection, aiming to address one of the main causes of battery thermal runaway in lithium-ion batteries. The method normalizes the cell terminal voltages and evaluates them using a local gravity outlier detection algorithm, achieving the ability to diagnose early ISC faults even when the fault characteristics are not obvious. Experimental results show that the proposed method can accurately and rapidly detect ISC faults of varying severity.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Moritz H. Futscher, Luc Brinkman, Andre Mueller, Joel Casella, Abdessalem Aribia, Yaroslav E. Romanyuk
Summary: The authors predict that stacked thin-film batteries with thin cathodes of 0.15-2 μm thickness can achieve a tenfold increase in specific power. They demonstrate this design concept in two monolithically stacked thin-film cells. This technology is important for increasing the power capabilities of lithium-ion batteries for high-end applications.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Energy & Fuels
Da Yu, Dongsheng Ren, Keren Dai, He Zhang, Jinming Zhang, Benqiang Yang, Shaojie Ma, Xiaofeng Wang, Zheng You
Summary: This study investigates the electric parameter drift and failure mechanism of lithium-ion batteries under high impact conditions through experiments and theoretical analysis. An equivalent circuit model and mechanical impact dynamic (MID) model are established to analyze the impact resistance of lithium-ion batteries, providing insights for the optimization design of batteries in high-impact environments.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Gunther Luft Cardoso, Paulo Cesar Piquini, Douglas Duarte Vargas, Rogerio Jose Baierle, Rajeev Ahuja
Summary: The thermal stability, structural and electronic properties of the alpha(1) allotrope of BNP2 layered material were analyzed using first-principles density functional theory calculations. The potential of utilizing this material as an anode in Li batteries was thoroughly investigated. The results indicate that BNP2 layered systems exhibit suitable features for anode applications, with improved stability of Li adsorption and enhanced ionic conductivity.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Energy & Fuels
Quanqing Yu, Changjiang Wan, Junfu Li, E. Lixin, Xin Zhang, Yonghe Huang, Tao Liu
Summary: The proposed method enhances SOC estimation accuracy by segmenting and fitting the OCV curve, fusing the OCV sub-models with a weight function, and effectively tracking the performance of the OCV-SOC curve model under different temperatures.
Article
Chemistry, Physical
Qingqing Zhang, Kai Liu, Cheng Li, Susheng Tan, Lu Li, Xiao-Guang Sun, Wei Li, Xingjiang Liu, Jinli Zhang, Sheng Dai
Summary: The utilization of concentration-gradient Na+, F- co-doping and surface NaF coating on SC LiNi0.5Co0.2Mn0.3O2 cathode has successfully regulated the external structure of materials, leading to outstanding electrochemical performances. Multiple characterizations revealed the detailed interface transformation mechanism and suggested that the superior results are mainly attributed to the overall structure integrity of SC material and the thin cathode electrolyte interface. This work provides a new approach to construct a benign interface for high-performance lithium ion batteries.
Article
Thermodynamics
Limei Wang, Jingjing Sun, Yingfeng Cai, Yubo Lian, Mengjie Jin, Xiuliang Zhao, Ruochen Wang, Long Chen, Jun Chen
Summary: This paper proposes a method to construct a complete OCV-SOC curve at different temperatures based on cloud data. It also establishes an OCV-SOC model suitable for different temperatures using an improved electrode potential model. Additionally, a method to construct a complete OCV-SOC curve from the charge segment based on the thermodynamic ideal material characteristics is proposed.
Article
Chemistry, Multidisciplinary
Shasha Qu, Wenbin Wu, Yunfan Wu, Yanping Zhuang, Jie Lin, Laisen Wang, Qiulong Wei, Qingshui Xie, Dong-Liang Peng
Summary: In this study, LiF thin film was sputtered on LCO electrodes to enhance electrochemical performance and reduce voltage polarization. The various polarization components were quantified, and the improved properties of LiF-coated LCO were confirmed through electrochemical tests and in-situ XRD experiments. This work provides a reference for quantifying polarization components and suggests the potential use of LiF film coating in developing similar cathode materials.
Article
Chemistry, Physical
Shengli Liang, Yunzhang Li, Yi Zhang, Meng Zhou, Shuang Liu, Xu Li, Yongfeng Geng, Baohong Tian, Yanlin Jia, Yong Liu, Alex A. Volinsky
Summary: The interface structure of Cu30Cr0.2Zr electrical contacts was modified using CeO2/GO to improve mechanical properties and arc erosion resistance. The addition of CeO2/GO enhanced the tensile strength, ductility, and electrical conductivity of the composites. It also reduced the concentrated erosion of the arc, improved welding resistance, and prolonged the electrode's service life.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Shifang Li, Mei Fang, Zhu Xiao, Xiangpeng Meng, Qian Lei, Yanlin Jia
Summary: Cu-10Ni-1.6Fe-0.5Mn-0.3Cr alloy has better corrosion resistance performance compared to Cu-10Ni-1.6Fe-0.5Mn alloy in 3.5 wt% NaCl solution, which is mainly attributed to the incorporation of Cr ions during corrosion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Xianhua Zheng, Meng Zhou, Yi Zhang, Jinliang Huang, Yunzhang Li, Hanjing Zhu, Shunlong Tang, De Li, Shengli Liang, Baohong Tian, Yong Liu, Xu Li, Yanlin Jia, Alex A. Volinsky
Summary: The aim of this study is to observe the organization and properties of Al2O3-Cu/WSiC-Y2O3 composites and investigate the effect of Y2O3 incorporation on the electrical contact properties. Al2O3-Cu/30W3SiC(0.5Y2O3) composites were prepared by rapid hot-pressing sintering technique. The composites exhibited good overall performance with high conductivity, hardness, and thermal conductivity. The addition of Y2O3 improved the resistance to arc erosion and reduced material transfer and loss.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhiyang Zhang, Meng Zhou, Yi Zhang, Shunlong Tang, Deye Xu, Baohong Tian, Xu Li, Yanlin Jia, Yong Liu, Alex A. Volinsky
Summary: Cu-Ti-Ni-Mg and Cu-Ti-Ni-Mg-Ce alloys were prepared by vacuum induction melting and subjected to hot deformation tests. The true stress-strain curves were obtained and constitutive equations were established. The addition of Ce reduced dislocation density and texture strength, promoted precipitation, and improved the deformation resistance of the alloys. The optimal processing parameters were determined based on the processing maps. The microstructure of the alloys was analyzed using EBSD and TEM, and CuNi2Ti precipitates were found in both alloys, with more in the Cu-Ti-Ni-Mg-Ce alloys.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Yanlin Jia, Yong Pang, Jiang Yi, Qian Lei, Zhou Li, Zhu Xiao
Summary: Thermal-mechanical treatment is crucial for high-strength and high-conductivity Cu-Ni-Si alloy synthesis. This study introduced a high-temperature/short-time pre-aging treatment to the thermomechanical processes of Cu-Ni-Si alloys and investigated its effects on the microstructure and properties. The results showed that pre-aging promoted the formation of a nanoscale microstructure, increased initial conductivity, and improved subsequent final aging. This research provides guidance for designing high-performance copper alloys and systematically investigates the strengthening mechanism and microstructure evolution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yufang Zhang, Xueping Gan, Zhu Xiao, Yanlin Jia, Wenting Qiu, Xiangpeng Meng, Yi Zhang, Lairong Xiao, Gai Sun, Tianyi Zhang
Summary: An ultrahigh strength Cu-9Ni-1.5Sn-0.8Si-0.1Al alloy was designed and the effect of multi-stage thermomechanical treatment on its microstructure and properties was explored. The alloy exhibited a tensile strength of 1150 MPa and remained electrical conductivity of 18.1 %IACS after the treatment. Nanoscale β-Ni3Sn, β-Ni3Si, and γ-Ni3Al precipitates were formed during the process. The precipitation strengthening contributed more than half of the alloy's ultra-high strength, and the multi-stage treatment improved its mechanical and electrical conductivity properties compared to single-stage aging treatment.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Automation & Control Systems
Yan Yang, Yi Luo, Lingbo Chen, Yanlin Jia
Summary: The study proposes a new score function and aggregation operator, as well as a new intuitionistic fuzzy multiple attribute decision making (MADM) method. A parametric piecewise score function is constructed and its influence of hesitancy degree and parameter lambda is discussed. Additionally, a intuitionistic fuzzy modified Einstein aggregation (IFMEWA) operator is introduced, and its monotonicity, idempotency, and boundedness are proven. Finally, a new intuitionistic fuzzy MADM method is proposed, combining the constructed score function and IFMEWA operator.
JOURNAL OF CONTROL AND DECISION
(2023)
Article
Chemistry, Physical
Yong Pan, Jiaxin Zhu
Summary: This study investigates the phase stability, mechanical and thermodynamic properties of Ti-V solid solutions using the DFT method. The results show that V(Ti) (ss) solid solution exhibits higher mechanical stability and better ductility, which is attributed to the localized hybridization between Ti(3d) and V(3d) in the Ti-V metallic bond.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Linhan Li, Yufang Zhang, Muzhi Ma, Yanlin Jia, Zhu Xiao, Jinhui Hu, Zhao Xin, Xinfeng Jiang, Xianfeng Liao, Xiangyu Yu
Summary: Cu-0.45Cr-0.15 Mg and Cu-0.45Cr-0.15Mg-0.02Si (wt.%) alloys show excellent comprehensive properties after multi-stage thermo-mechanical treatment, achieving high strength, high conductivity, and good elongation. Different forms of precipitation were observed in various aging stages, with Cu-0.45Cr-0.15Mg-0.02Si alloy showing more precipitation. The addition of Si promotes the precipitation of Cr and refines precipitation, preserving high density of dislocation and resulting in superior strength and conductivity.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Shuaikang Tang, Zhu Xiao, Yanjun Ding, Ying Li, Richu Wang, Yanlin Jia, Shen Gong, Zhou Li
Summary: The effect of multi-stage thermo-mechanical treatment on the microstructure and properties of a Cu-2Fe-0.5Ti alloy was investigated. The alloy exhibited improved mechanical properties and electrical conductivity after repeated thermal-mechanical treatment and aging. The precipitation of nano-scale Fe2Ti and gamma-Fe phases contributed to these improvements, along with the grain boundary and dislocation strengthening mechanisms.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Xianfeng Liao, Linhan Li, Kalubi Ren, Yanlin Jia, Yong Pang, Zhu Xiao, Yanbin Jiang, Zhou Li
Summary: The effects of grain size, grain boundary type, and misorientation on the initiation of discontinuous precipitates in a Cue5Ni e1.25Si alloy are investigated in this study. It is found that smaller grain sizes result in a higher percentage of discontinuous precipitates. Only random grain boundaries are capable of initiating discontinuous precipitates, while coincident site lattice boundaries are not. There is also a difference in the initiation of discontinuous precipitates depending on the misorientation axis.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yong Pan
Summary: This study investigates the influence of refractory metals on the mechanical and thermodynamic properties of ZrAl2 high-temperature alloy through first-principles calculations. The results show that refractory metal doping enhances the stability and bulk modulus of ZrAl2, with the highest improvement observed in W-doped ZrAl2. Additionally, the refractory metals improve the isotropy and increase the melting point and Debye temperature of ZrAl2. The study concludes that W is an effective metal for improving the overall properties of ZrAl2 high-temperature alloy.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yong Pan
Summary: This study investigates the oxidation behavior of Fe2CrAl ternary alloy using first-principles method, with a focus on the influence of vacancies. The results show that the Cr vacancy has the strongest effect on oxidation resistance, enhancing the localized hybridization between O and Al atoms and forming Al2O3 oxide.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yong Pan
Summary: Mo3Al2C MAX phase is a promising high temperature ceramics with high temperature strength and excellent oxidation resistance. This study investigates the structural stability, mechanical and thermodynamic properties of TM3Al2C MAX phase using first-principles method.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yong Pan
Summary: The structural configuration, hardness and bonding state of TiB4 tetraborides were studied using the first-principles method. A stable orthorhombic (Cmcm) TiB4 with a potential to be a superhard material was predicted based on the calculated lattice parameters and bond strength.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
