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The stability of organic solvents and carbon electrode in nonaqueous Li-O2 batteries
May 21 , 2021
2. Experimental 2.1. Preparation and cell testing Ethylene carbonate (EC), propylene carbonate (PC), DME,tri(ethylene glycol) dimethyl ether (i.e., Triglyme), di(ethyleneglycol) di-n-butyl ether (i.e. butyl diglyme, BDG), and lithiumbis(trifluoromethylsulfonyl)imide (LiTFSI) (all in batterygrade) were purchased from Novolyte Technologies. DMSO,triethyl phosphate (TEPa), 1-butyl-1-methylpyrrolidium...
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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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Monolithic Nanoporous Zn Anode for Rechargeable Alkaline Batteries
Jun 28 , 2021
Congcheng Wang,# Guoyin Zhu,# Pan Liu, and Qing Chen* METHODS Battery Assembly and Testing. Ni−Zn batteries were assembled into coin-type cells (CR2032) with a Zn anode, either the compressed nanoporous Zn (∼0.36 cm2 in size) or a pasted electrode comprising Zn powder (90 wt %, Aldrich), polyvinylidene fluoride (Arkema Kynar), and a NiOOH cathode (650 mAh, GP Batteries). Tin foil was used as the a...
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Lithium Ion Conducting Polymerized Ionic Liquid Pentablock Terpolymers as Solid-State Electrolytes
Jul 12 , 2021
Abstract In this study, a lithium ion conducting polymerized ionic liquid pentablock terpolymer (PILPTP) was investigated as a battery electrolyte (Xiamen Tmaxcn Inc.) for lithium ion batteries. The ABCBA pentablock terpolymer, poly(tbS-b-EP-b-MS-b-EP-b-tbS) (tbS = tert-butyl-styrene; EP = ethylene-r-propylene; MS = 4-methylstyrene), was brominated and quaternized to covalently attach two dif...
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Exploiting Anti-T-shaped Graphenes Architecture to Form Low Tortuosity, Sieve-like Interfaces for High-performance Anodes for Li-Based Cells
Jul 23 , 2021
Experimental Section Synthesis of multilayer-graphene nanowalls anchored on carbon paper：The carbon paper used was commercialized Toray carbon paper (CP). Every CP was tailored to be a wafer of 16mm in diameter. Subsequently, the mutilayer-graphene nanowalls would be grown on this CP substrate using RF-PECVD. The parameters were 200W (power), 890℃ (temperature), 30min (time) and 1000Pa (...
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High-energy-density activated carbon electrode for organic electric-double-layer-capacitor using carbonized petroleum pitch
Jul 28 , 2021
Poo Reum Choi1, Sang-Gil Kim2, Ji Chul Jung1,♠ and Myung-Soo Kim1,♠ 1Department of Chemical Engineering, Myongji University, Yongin 17058, Korea 2R&D Center, Vitzrocell Co. Ltd., Yesan 32417, Korea 2.2. Preparation of AC In order to change the degree of crystallinity of the precursors before the KOH activation process, the PPs were ground and pre-carbonized for 1 h in a temperature...
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