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Continuing from the previous article Recent progress on anode for sulfide-based all-solid-state lithium batteries —— Part 2 other anodes Author: JIA Linan, DU Yibo, GUO Bangjun, ZHANG Xi 1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200241, China 2. Shanghai Yili New Energy Technology Co. , LTD. , Shanghai 201306, China Lithium alloy anode Due to ...
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Electrochemical Activity of Positive Electrode Material of P2-Nax[Mg0.33Mn0.67]O2 Sodium Ion Battery Author: ZHANG Xiaojun1, LI Jiale1,2, QIU Wujie2,3, YANG Miaosen1, LIU Jianjun2,3,4 1. Jilin Province Sci-Tech Center for Clean Conversion and High-valued Utilization of Biomass, Northeast Electric Power University, Jilin 132012, China 2. State Key Laboratory of High Perform...
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Recent Progress of Boron-based Materials in Lithium-sulfur Battery Author: LI Gaoran, LI Hongyang, ZENG Haibo MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Nano Optoelectronic Materials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 Abstract Lithium-sulfur (Li-S) batteries play a crucial role in the...
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LaNi0.6Fe0.4O3 Cathode Contact Material: Electrical Conducting Properties Manipulation and Its Effect on SOFC Electrochemical Performance ZHANG Kun, WANG Yu, ZHU Tenglong, SUN Kaihua, HAN Minfang, ZHONG Qin. LaNi0.6Fe0.4O3 Cathode Contact Material: Electrical Conducting Properties Manipulation and Its Effect on SOFC Electrochemical Performance[J]. Journal of Inorganic Materials, DOI: 10....
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1. What is lithium iron manganese phosphate? Lithium iron manganese phosphate is a new cathode material formed by doping lithium iron phosphate with a certain amount of manganese element. Since the ionic radii and some chemical properties of manganese and iron elements are similar, lithium iron manganese phosphate and lithium iron phosphate are similar in structure, and both have an olivine struct...
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This article analyzes the causes of zero voltage. Focused on the phenomenon of zero voltage in the battery caused by electrode burrs. By identifying the cause of the short circuit, we aim to precisely resolve the problem and better understand the importance of controlling electrode burrs during production. Experiment 1. Battery preparation This experiment uses lithium nickel cobalt manganate mater...
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The principle of laser cleaning is to utilize the characteristics of laser beam with large energy density, controllable direction and strong convergence ability. The laser interacts with contaminants such as oil stains, rust spots, dust residue, coatings, oxide layers or film layers attached to the workpiece base, and is separated from the workpiece base in the form of instantaneous thermal expans...
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The winding process of lithium-ion batteries is to roll the positive electrode sheet, negative electrode sheet and separator together through the winding needle mechanism of the winding machine. The adjacent positive and negative electrode sheets are isolated by the separator to prevent short circuit. After winding, the jelly roll is fixed with a termination tape to prevent it from spreading, and ...
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Areal density（mg/cm2）：Areal density refers to the mass per unit area, which in this case is (the mass per unit area ofthe region ignoring the volume). Compacted density（g/cm3）：The compacted density indicates the mass contained in a unit volume, which has a lot to do with the properties of the material itself. Thickness：The total thickness of the material and the foil is generally expressed in micr...
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The dew point is the temperature at which moisture condenses. When the water vapor content in the air remains unchanged and the air pressure is kept constant, the temperature at which the air is cooled to saturation is called the dew point temperature (Td), or dew point for short. It can also be understood as the temperature at which water vapor and water reach equilibrium. The difference between ...
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During the charge and discharge process of the battery, as the charge and discharge depth changes, the voltage is also constantly changing. If we use capacity as the horizontal coordinate and voltage as the vertical coordinate, we can get a simple charge and discharge curve, which contains many clues about the battery's electrical performance. These curves drawn with the battery cell parameters su...
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Improving the initial coulombic efficiency of lithium-ion batteries is a complex and important topic, which is directly related to the energy utilization and overall performance of the battery. The following is an in-depth analysis of the factors affecting the first coulombic efficiency of lithium-ion batteries from multiple perspectives, and proposes corresponding solutions. 1.Factors affecting t...
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As a key equipment in battery production, the calibration accuracy of the coating head of the lithium battery coating machine directly affects the coating quality, and thus affects the performance and life of the battery. This article will analyze the calibration method of the lithium battery coating machine die head in detail from three levels: basic calibration, positioning calibration, and fine...
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Recently, Professor Zhang Qiang's team from the Department of Chemical Engineering at Tsinghua University published the research results on the bulk/surface interface structure design of lithium-rich manganese-based cathode materials for all-solid-state metal lithium batteries. They proposed an in-situ bulk/surface interface structure regulation strategy, constructed a fast and stable Li+/e−pathwa...
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WANG Kunpeng ,1, LIU Zhaolin2, LIN Cunsheng2, WANG Zhiyu ,1,2 1. State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China 2. Branch of New Material Development, Valiant Co., Ltd., Yantai 265503, China Abstract In comparison to Li-ion batteries, Na-ion batteries offer the benefits of low cost, good low-temperature performance, and safety...
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The current production efficiency and yield of large cylindrical batteries are still relatively low, and there are still the following process difficulties in achieving high-efficiency mass production: 1) Full-tab forming: The difficulty lies in controlling the flattening accuracy and strength to avoid damage to the current collector or the generation of debris, dust, etc. 2) Collector plate and p...
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Lithium iron phosphate (LiFePO4) cathode electrode material oil-based slurry usually uses N-methylpyrrolidone (NMP), dimethyl sulfoxide and dimethylformamide as solvents, which have problems such as difficult solvent recovery, large amount of use and environmental pollution. LiFePO4 positive electrode material water-based slurry uses deionized water as solvent, which is environmentally friendly an...
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