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Optimization of Nonaqueous Electrolytes for Primary Lithium/Air Batteries Operated in Ambient Environment
May 31 , 2021
Wu Xu,*,z Jie Xiao,** Jian Zhang, Deyu Wang,** and Ji-Guang Zhang* Pacific Northwest National Laboratory, Energy and Environment Directorate, Richland, Washington 99354,USA Li/air coin cell assembly (xiamen Tmaxcn Inc.)— The air electrode sheet was die cut into circular disks with a small piece of Ni tab. The air electrode disks had a diameter of 1.59 cm and an area of 1.98 cm2. 2325 coin cell kit...
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Improving the high-temperature performance of LiMn2O4 spinel electrodes by coating the active mass with MgO via asonochemical method
Jun 02 , 2021
J.S. Gnanaraj, V.G. Pol, A. Gedanken, D. Aurbach * Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel Received 6 August 2003; accepted 19 August 2003 Published online: 30 September 2003 2. Experimental For surface analysis studies, we used a Magna 860(Nicolet) FTIR spectrometer placed in a vacuum glove box (xiamen Tmaxcn Inc) under H2O and CO2-free atmosphere (fed by compr...
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Solvent-Free Dry Powder Coating Process for Low-Cost Manufacturing of LiNi1/3Mn1/3Co1/3O2 Cathodes in Lithium-Ion Batteries
Jun 04 , 2021
Mohanad Al-Shroofy,aQinglin Zhang,aJiagang Xu,aTao Chen,aAman Preet Kaur,band Yang-Tse Chenga 2. Experimental 2.1 Electrode Fabrication 2.1.1 Dry-Powder-Coated Electrodes.To prepare the dry cathode mixture, NMC (Umicore) was mixed with carbon black (CB, Super P C65, TIMCAL) in a planetary mixer-deaerator (Mazerustar KK-50S, Kurabo) for 20 min. The NMC particle size is between 5.6 µm and 12 µm (D50...
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Synthesis, characterization, and evaluation of unsupported porous NiS submicrometer spheres as a cathode material for lithium batteries
Jun 18 , 2021
Debajyoti Mondal•Gilles Villemure•Chaojie Song 2.2 Synthesis of porous NiS submicrospheres The USP procedure for the synthesis of nanomaterials wasreported elsewhere [54]. A solution containingNiCl26H2O, Na2S2O35H2O, and colloidal silica was prepared according to a procedure reported in our previouspaper [55]. The solution was loaded to a USP ultrasonic cell, after which the system was purged with...
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The Influence of Polyvinylidene Fluoride (PVDF) Binder Properties on LiNi0.33Co0.33Mn0.33O2(NMC) Electrodes Made by a Dry-PowderCoating Process
Jun 21 , 2021
To cite this article: Ming Wang et al 2019 J. Electrochem. Soc. 166 A2151 Preparation of electrodes.—A manually operated powder coatingspray gun (Encore LT Manual Powder Coating System, Nordson) was used for the ESD process. One piece of 16μm thick aluminum foil was used as the electrode substrate, one piece of electrically grounded Cuplate (250μm thick) was used as the platform. The operation vol...
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Effects of the Mixing of an Active Material and a Conductive Additive on the Electric Double Layer Capacitor Performance in Organic Electrolyte
Jun 25 , 2021
2. Experimental Procedure Activated carbon(MSP-20) for an active electrode material was provided from Kansai Coke & Chemicals Co.. Super-P(M.M.M. Carbon Co., Belgium) and polyvinylidene fluoride(Sigma-Aldrich) were employed as a conductive additive and a binder, respectively. The preparation procedure for a coin-type EDLC cell was briefly presented in Fig. 1. Active materia...
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Effect of entropy change of lithium intercalation in cathodes and anodes on Li-ion battery thermal management
Jun 30 , 2021
Vilayanur V. Viswanathan∗, Daiwon Choi, Donghai Wang11, Wu Xu, Silas Towne, Ralph E. Williford, Ji-Guang Zhang, Jun Liu, Zhenguo Yang 3. Experiment 3.1. Electrode synthesis Nanosized LiFePO4 was synthesized using LiCoOCH3•2H2O(reagent grade, Sigma), FeCO2•2H2O (99%, Aldrich), (NH4)H2PO4(99.999%, Sigma–Aldrich), oleic acid (FCC, FG) and paraffin wax(ASTM D 87, mp. 53–57◦C, Aldrich). (NH4)H2PO4 was ...
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EXPERIMENTS AND ANALYSIS OF EVAPORATION IN ELECTRODE PROCESSING FOR ENERGY STORAGE
Jul 05 , 2021
Experimental Equipment Electrode processing can be broken up into five main sections: dry powder mixing, wet mixing, substrate preparation, film application, and drying. The equipment and preparation stations utilized in this study are presented herein. A visual overview of the ETSL experimental facility can be seen in Figure 2. The electrode substrate and slurry preparation station is shown in Fi...
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LiPF3(CF2CF3)(3): A salt for rechargeable lithium ion batteries
Jul 07 , 2021
J. S. Gnanaraj,a M. D. Levi,a,* Y. Gofer,a D. Aurbach,a,*,z and M. Schmidtb aDepartment of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel bMerck KGaA, D-64293 Darmstadt, Germany Experimental All the work was performed under a highly pure argon atmosphere in standard vacuum glove box from Xiamen TMAX Battery Equipments Limited. The anodes were composed of synthetic graphite (KS-6) from Tim...
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