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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >SnO2 nanowire anchored graphene nanosheet matrix for the superior performance of Li-ion thin film battery anode
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SnO2 nanowire anchored graphene nanosheet matrix for the superior performance of Li-ion thin film battery anode

机译：SnO2纳米线锚固的石墨烯纳米片基质，具有锂离子薄膜电池阳极的优异性能

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摘要

All solid state batteries are essential candidate for miniaturizing the portable electronics devices. Thin film batteries are constructed by layer by layer deposition of electrode materials by physical vapour deposition method. We propose a promising novel method and unique architecture, in which highly porous graphene sheet embedded with SnO2 nanowire could be employed as the anode electrode in lithium ion thin film battery. The vertically standing graphene flakes were synthesized by microwave plasma CVD and SnO2 nanowires based on a vapour-liquid-solid (VLS) mechanism via thermal evaporation at low synthesis temperature (620 degrees C). The graphene sheet/SnO2 nanowire composite electrode demonstrated stable cycling behaviours and delivered a initial high specific discharge capacity of 1335 mAh g(-1) and 900 mAh g(-1) after the 50th cycle. Furthermore, the SnO2 nanowire electrode displayed superior rate capabilities with various current densities.
机译：所有固态电池对于使便携式电子设备小型化都是必不可少的。通过物理气相沉积法逐层沉积电极材料来构造薄膜电池。我们提出了一种有前途的新方法和独特的体系结构，其中嵌入SnO2纳米线的高度多孔的石墨烯片可用作锂离子薄膜电池的阳极。通过微波等离子体CVD和SnO2纳米线，基于汽-液-固（VLS）机理，通过低合成温度（620摄氏度）的热蒸发，合成了垂直排列的石墨烯薄片。石墨烯片/ SnO2纳米线复合电极显示出稳定的循环行为，并在第50个循环后提供了1335 mAh g（-1）和900 mAh g（-1）的初始高比放电容量。此外，SnO2纳米线电极在各种电流密度下均显示出卓越的速率能力。

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