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首页> 外文期刊>Journal of industrial and engineering chemistry >Fabrication and electrochemical characteristics of NCM-based all-solid lithium batteries using nano-grade garnet Al-LLZO powder
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Fabrication and electrochemical characteristics of NCM-based all-solid lithium batteries using nano-grade garnet Al-LLZO powder

机译：基于NCM的全固体锂电池的制造和电化学特性使用纳米级石榴石Al-LLZO粉末

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摘要

Garnet-related Li6.25Al0.25La3Zr2O12 (Al-LLZO) powder was prepared by calcination the precursor synthesized a Couette-Taylor reactor. The powder comprised regular blocks (1-2 mu m) and consisted of fine particles (average particle size: D-50 = 600 nm, specific surface area: 2.42 m(2) g(-1)) that adopted a highly crystalline nanoscale cubic structure (lattice parameter: a = 13.07769 angstrom; crystallite size: 41.4 nm). A composite electrolyte (CE) sheet in which the Al-LLZO nanopowder was finely dispersed was prepared by casting a slurry comprising 70 wt% Al-LLZO, polyethylene oxide (PEO), and lithium salt (LiClO4). The total ionic conductivity of the CE sheet was 7.59 x 10(-6) S cm(-1) at 25 degrees C and 1.93 x 10(-3) S cm(-1) at 70 degrees C, compared with 3.03 x 10(-4) S cm(-1) at 25 degrees C for the Al-LLZO pellet. Cyclic voltammetry showed that the electrochemical potential of the CE sheet was superior to that of PEO sheet. For application of the CE in all-solid lithium batteries (ASLBs), a composite NCM-based cathode composed of Al-LLZO, PEO, Super-P, and VGCF was also prepared. The discharge capacity of the cell was similar to 122 mAh g(-1) at 0.1C & 70 degrees C in voltages of 3.0-4.1 V, and similar to 80% of the initial capacity was maintained over 100 cycles with high rate characteristics. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：通过煅烧制备石榴石相关的Li6.25A10.25LA3ZR2O12（Al-LLZO）粉末，前体合成Coute-Taylor反应器。粉末包含规则的块（1-2μm）并由细颗粒组成（平均粒度：D-50 = 600nm，比表面积：2.42m（2）g（-1））采用高度结晶的纳米载体立方结构（晶格参数：A = 13.07769埃;微晶尺寸：41.4nm）。通过将包含70wt％Al-LLZO，聚环氧乙烷（PEO）和锂盐（LICLO4）的浆料浇铸来制备所述Al-LLZO纳米粉末精细分散的复合电解质（CE）片。 CE片材的总离子电导率为7.59×10（-6）厘米（-1），在25℃，1.93×10（-3）厘米（-1），70℃，与3.03×10相比（-4）S cm（-1）在25℃下为Al-LLZO颗粒。循环伏安显示CE板的电化学电位优于PEO片材。为了在全固体锂电池（ASLBS）中的应用，还制备了由Al-LLZO，PEO，Super-P和VGCF组成的基于基于NCM的阴极。在3.0-4.1V的电压下，电池的放电容量在0.1C和70摄氏度下的122mAhg（-1）类似，并且类似于初始容量的80％的初始容量，具有高速率特性。 （c）2018年韩国工程和工程化学学会。 elsevier b.v出版。保留所有权利。

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