• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>TMS annual meeting exhibition >High-Performance Supercapacitors Based on Hierarchical VOx Microspheres Forming from Hyperbranched Nanoribbons
【24h】

High-Performance Supercapacitors Based on Hierarchical VOx Microspheres Forming from Hyperbranched Nanoribbons

机译：基于超支化纳米带形成的分层VOx微球的高性能超级电容器

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Novel VOx nanomaterials as high performance electrode materials of supercapacitors were successfully synthesized by solvothermal method using V_2O_5, H_2O_2, (NH_4)_2SO_4 and EG (Ethylene Glycol). These as-prepared nanomaterials are hierarchical microspheres with diameter of ～5 μm, which formed from hyperbranched growth of nanoribbons. According to XRD and TEM, these hierarchical Vox microspheres consist of V_6O_(13) with metallic conductivity and VO_2. These materials exhibited a tremendous specific capacitance of 581 F/g, with corresponding volumetric specific capacitance of 3.94 F/cm~3, at 0.6 A/g in the potential range of 0 to 1.2 V when used as supercapacitor electrodes in a solution of 1 M LiNO_3. The energy density is as high as 29 Wh/kg, which is much higher than those of many other symmetrical supercapacitors. In addition, the capacity retention of 65% was achieved even after 2000 cycles, demonstrating high performance of vanadium oxide nanomaterials used in supercapacitors.
机译：采用V_2O_5，H_2O_2，（NH_4）_2SO_4和EG（乙二醇）通过溶剂热法成功合成了新型VOx纳米材料作为高性能超级电容器的电极材料。这些制备的纳米材料是直径约5μm的分层微球，由纳米带的超支化生长形成。根据XRD和TEM，这些分层的Vox微球由具有金属导电性和VO_2的V_6O_（13）组成。这些材料在1的溶液中用作超级电容器电极时，在0至1.2 V的电位范围内，在0.6 A / g的电势范围内显示出581 F / g的巨大比电容，相应的体积比电容为3.94 F / cm〜3 M LiNO_3。能量密度高达29 Wh / kg，远高于许多其他对称超级电容器的能量密度。此外，即使经过2000次循环，容量保持率也达到了65％，这证明了用于超级电容器的氧化钒纳米材料的高性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号