All-solid-state lithium secondary batteries using NiS-carbon fiber composite electrodes coated with Li₂S-P₂S₅ solid electrolytes by pulsed laser deposition.
All-solid-state lithium secondary batteries using NiS-carbon fiber composite electrodes coated with Li₂S-P₂S₅ solid electrolytes by pulsed laser deposition.
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DOI：
10.1021/am302164e
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发表时间：
2013-01
影响因子：
9.5
通讯作者：
K. Aso;A. Sakuda;A. Hayashi;M. Tatsumisago
中科院分区：
文献类型：
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作者：
K. Aso;A. Sakuda;A. Hayashi;M. Tatsumisago
采用脉冲激光沉积（PLD）法在NiS-VGCF复合材料上涂覆高导电性Li（2）S-P（2）S（5）固体电解质，制备了由NiS活性物质、硫化物基固体电解质（SE）和导电添加剂（VGCF：气相生长碳纤维）组成的复合材料。从扫描电子显微镜，NiS纳米粒子的VGCF表面后，使用PLD涂覆固体电解质。采用SE涂层NiS-VGCF复合材料和未涂层NiS-VGCF复合材料制备了全固态电池，研究了SE涂层对NiS-VGCF复合材料电化学性能的影响。在3.8 mA cm（-2）的高电流密度下（对应于约1.5 mA），1C），使用SE涂覆的NiS-VGCF复合物作为工作电极制造的全固态电池显示出300 mA h g（-1）的初始放电容量，并且表现出比使用未涂覆的NiS-VGCF复合物的电池更好的循环性能。
Composite materials including NiS active materials, sulfide-based solid electrolytes (SE), and conductive additives (VGCF: vapor grown carbon fiber) were prepared by coating a highly conductive Li(2)S-P(2)S(5) solid electrolyte onto NiS-VGCF composite using pulsed laser deposition (PLD). From scanning electron microscopy, NiS nanoparticles were on VGCF surface after coating of solid electrolytes using PLD. All-solid-state cells using the SE-coated NiS-VGCF composite and the uncoated NiS-VGCF composite were fabricated, and then the coating effects on the electrochemical performance by forming the SE thin film onto the NiS-VGCF composite were investigated. At a high current density of 3.8 mA cm(-2) (corresponding to ca. 1 C), an all-solid-state cell fabricated using the SE-coated NiS-VGCF composite as a working electrode showed the initial discharge capacity of 300 mA h g(-1), and exhibited better cycle performance than the cell using the uncoated NiS-VGCF composite.