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Synthesis and characterization of NaCo_((1-x))MnxO2 solid electrolyte using sol-gel method: the effect of milling speed variations

机译:使用溶胶 - 凝胶法的NaCO _((1-X))MnxO2固体电解质的合成与表征:铣削速度变化的效果

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Battery is a device that converts chemical energy into electrical energy through electrochemical process. Further research on the synthesis of cathode of Na-ion battery that has good conductivity to maximize the battery performance needs to be conducted. One of the production steps oftheNaCo_((1-x)))NaCo cathode synthesis intheNa-Ion battery was a ball-milling process, in which by the ball-milling process, the crystal size of NaCo_((1-x))MnxO2 cathode can be minimized. The purpose of this study was to determine the effect of variation of ball-milling speed to the characteristics of resulting product including the oxide types composing NaCo(i-x)MnxO2cathode, surface morphology, and conductivity. The main ingredients used were sodium acetate, manganese acetate, cobalt acetate with molar ratio of 0.7: 0.66: 0.22, respectively and citric acid as chelating agent with the M/CA ratio of 1: 1. The variations of milling speed were 0, 300, 400, 500, 600 and 700 rpm. Characterization of the product was conducted using XRD, SEM-EDS, and conductivity meter (LCR-meter). The result showed that a solid electrolyte of NaC0(i.x)Mnx02 consisting of NaMnC>2, NaCb, CoO, Co2O3, MnO2 components was successfully synthesized. The observation on the milling speed at 400 rpm showed that the solid electrolyte produced had the highest conductivity i.e. 4.08 x 10-6 Scm~(-1) with a homogeneous surface morphology and had a spinel formula NaCo_(0.65)Mn_(0.35)O2.
机译:电池是一种通过电化学方法将化学能转化成电能的装置。要进行在具有良好的导电性,以最大限度地延长电池的性能需求的Na离子电池的阴极的合成进一步的研究。一个生产步骤oftheNaCo _((1-X)))的NaCo阴极合成intheNa离子电池是球磨工艺,其中通过球磨过程中,的NaCo的晶体大小_((1-X))MnxO2阴极可以被最小化。本研究的目的是确定球磨速度的变化,从而导致产物包括氧化物类型构成的NaCo(I-x)的MnxO2cathode,表面形态,和导电性的特性的影响。所用的主要成分为乙酸钠,乙酸锰,乙酸钴0.7摩尔比,分别为0.22和柠檬酸作为螯合剂为1的M / CA比:0.66 1.研磨速度的变化分别为0,300 ,400,500,600和700的转速。产物的表征使用XRD,SEM-EDS和电导率计(LCR计)下进行。结果表明,NaC0(i.x)Mnx02由NaMnC> 2,NACB,COO,Co 2 O 3的构成的固体电解质,二氧化锰组分成功地合成。上以400rpm研磨速度的观察表明,该固体电解质中制成具有均匀的表面形态具有最高的导电率,即4.08×10 -6〜SCM(-1),有尖晶石式NaCo_(0.65)MN_(0.35)O2 。

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