私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:天津市西青區(qū)賓水西道399號(hào)
  • 郵編:300387
  • 電話:010-64437861
  • 傳真:
  • Email:jianxingeng@tiangong.edu.cn
當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
62. Tuning the morphologies of fluorine-doped tin oxides in the three-dimensional architecture of graphene for high-performance lithium-ion batteries
作者:S. Phulpoto, J. Sun,* S. Qi, L. Xiao, S. Yan,* J. Geng,*
關(guān)鍵字:Fluorine doping, Tin oxide, Graphene, Morphology, Lithium-ion batteries
論文來源:期刊
具體來源:Nanotechnology 2017, 28, 395404
發(fā)表時(shí)間:2017年
The morphology of electrode materials plays an important role in determining the performance of lithium-ion batteries (LIBs). However, studies on determining the most favorable morphology for high-performance LIBs have rarely been reported. In this study, a series of F-doped SnOx (F-SnO2 and F-SnO) materials with various morphologies was synthesized using ethylenediamine as a structure-directing agent in a facile hydrothermal process. During the hydrothermal process, the F-SnOx was embedded in situ into the three-dimensional (3D) architecture of reduced graphene oxide (RGO) to form F-SnOx@RGO composites. The morphologies and nanostructures of F-SnOx, i.e., F-SnO2 nanocrystals, F-SnO nanosheets, and F-SnO2 aggregated particles, were fully characterized using electron microscopy, x-ray diffraction, and x-ray photoelectron spectroscopy. Electrochemical characterization indicated that the F-SnO2 nanocrystals uniformly distributed in the 3D RGO architecture exhibited higher specific capacity, better rate performance, and longer cycling stability than the F-SnOx with other morphologies. These excellent electrochemical performances were attributed to the uniform distribution of the F-SnO2 nanocrystals, which significantly alleviated the volume changes of the electrode material and shortened the Li ion diffusion path during lithiation/delithiation processes. The F-SnO2@RGO composite composed of uniformly distributed F-SnO2 nanocrystals also exhibited excellent rate performance, as the specific capacities were measured to be 1158 and 648mA h g(-1) at current densities of 0.1 and 5 A g(-1), respectively.
主站蜘蛛池模板: 电白县| 淄博市| 宿迁市| 赤峰市| 罗田县| 泾源县| 梅河口市| 忻州市| 石棉县| 庆安县| 信阳市| 张家界市| 崇阳县| 临沭县| 应城市| 哈巴河县| 高唐县| 绍兴县| 吉安县| 新密市| 平阴县| 尉氏县| 大城县| 秦皇岛市| 和田县| 惠东县| 鄂托克旗| 保定市| 晴隆县| 双流县| 万载县| 元氏县| 临高县| 井冈山市| 华池县| 兴宁市| 曲沃县| 罗甸县| 肥东县| 巩留县| 桐庐县|