最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
納米陣列和納米晶薄膜錫電極性質的電化學研究
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

云南自然科學基金項目(2007B185M)


Electrochemical Study of Nano-Array and Nano-Crystalline Tin Anode
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計
  • |
  • 參考文獻
  • |
  • 相似文獻
  • |
  • 引證文獻
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    采用氧化鋁為模板的電化學沉積方法制備錫納米陣列電極,用掃描電鏡和X射線衍射儀表征電極微觀形貌結構,并采用循環(huán)伏安和交流阻抗研究電極嵌鋰過程,同時研究納米晶錫薄膜電極和軋制錫箔電極。結果表明:納米陣列電極與錫薄膜、錫箔電極具有不同交流阻抗譜特征,錫納米陣列電極在中頻區(qū)出現(xiàn)雙電層阻抗,與其電解液/電極接觸面積較大有關;不同微觀結構形態(tài)下錫電極的電化學反應表面阻抗相差大于一個數(shù)量級,錫納米陣列的表面膜電阻為19.8~14.6 Ω·cm2;錫納米陣列電極上的鋰離子擴散速率最大,0.2 V嵌鋰電位下擴散系數(shù)為10-10 cm2·s-1;采用納米陣列結構使電極具有很高電的化學活性。

    Abstract:

    Tin nano-array electrodes were assembled by electrochemical deposition using alumina anodic oxide (AAO) as templates. Morphology and structure of the tin electrodes were characterized by SEM and XRD. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were applied to reveal the electrochemical performance of the electrodes used as anode of Li-ion battery. Compared to electrodes of tin film and tin foil from rolling, the electrodes of tin nano-arrays are very active. The EIS spectra of tin nano-array electrodes show different characters from electrodes of tin film and tin foil. A medium-frequency area has been found which is ascribed to the large charge transfer area across the electrode/electrolyte interface. The lithium ion transporting in solid-electrolyte ion surface layer are controlled by structure of electrodes. The surface resistances for nano-arrays observed from high frequency ace are between 19.8 and 14.6 Ω·cm2. The highest diffusion coefficient is 10-10 cm2·s-1 for nano-array electrode, at potential of 0.2 V. The nano-array structure can lead to high electrochemical activity of the electrodes.

    參考文獻
    相似文獻
    引證文獻
引用本文

王 宇,劉 浪,吳大平,郭玉忠,王劍華.納米陣列和納米晶薄膜錫電極性質的電化學研究[J].稀有金屬材料與工程,2012,41(9):1628~1632.[Wang Yu, Liu Lang, Wu Daping, Guo Yuzhong, Wang Jianhua. Electrochemical Study of Nano-Array and Nano-Crystalline Tin Anode[J]. Rare Metal Materials and Engineering,2012,41(9):1628~1632.]
DOI:[doi]

復制
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: