用于电致变色的氧化银钒和五氧化二钒纳米线的制备。

Fabrication of silver vanadium oxide and V2O5 nanowires for electrochromics.

作者信息

Xiong Chunrong, Aliev Ali E, Gnade Bruce, Balkus Kenneth J

机构信息

Department of Chemistry, University of Texas at Dallas, Richardson, Texas 75083-0688, USA.

出版信息

ACS Nano. 2008 Feb;2(2):293-301. doi: 10.1021/nn700261c.

DOI:10.1021/nn700261c

PMID:19206630

Abstract

Silver vanadium oxide (SVO) and V2O5 nanowires have been hydrothermally synthesized. The as-made nanowires are over 30 microm long and 10-20 nm in diameter. The nanowires have a layered structure with a d-spacing of 1.07 nm. The nanowires can be fabricated into free-standing and flexible sheets by suction filtration. The electrical conductivity of the SVO nanowires is 0.5 S/cm, compared to 0.08 S/cm for the V2O5 nanowires. The Li ion diffusion coefficient in the SVO nanowires was 7 times higher than that in the V2O5 nanowires. An electrochromic device was fabricated from the SVO nanowires that displayed a color-switching time of 0.2 s from the bleached state (green) to the colored state (red-brown) and 60% transmittance contrast.

摘要

已通过水热法合成了氧化银钒（SVO）和五氧化二钒（V2O5）纳米线。所制备的纳米线长度超过30微米，直径为10 - 20纳米。这些纳米线具有层状结构，其d间距为1.07纳米。通过抽滤可将纳米线制成独立的柔性薄片。SVO纳米线的电导率为0.5 S/cm，而V2O5纳米线的电导率为0.08 S/cm。SVO纳米线中的锂离子扩散系数比V2O5纳米线中的高7倍。由SVO纳米线制成的电致变色器件从漂白状态（绿色）到着色状态（红棕色）的颜色切换时间为0.2秒，透光率对比度为60%。