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(jí)檢索
正交Li1-xMnO2(0≤x≤0.95)首次充電過程中物相及結(jié)構(gòu)的演變
DOI:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

河南省教育廳自然科學(xué)研究項(xiàng)目(2009A430010); 河南理工大學(xué)博士基金(B648238)


Evolutions of Phase and Microstructure of Orthorhombic Li1-xMnO2 (0≤x≤0.95) during the First Charge Process
Author:
Affiliation:

Fund Project:

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

    用高精度非原位XRD結(jié)合Rietveld精修對(duì)正交Li1-xMnO2(簡(jiǎn)寫為o-Li1-xMnO2，0≤x≤0.95)在首次充電(電化學(xué)脫鋰)過程中物相及結(jié)構(gòu)的演變進(jìn)行了研究。結(jié)果表明，o-LiMnO2電極的電壓升高速率與其結(jié)構(gòu)的變化有關(guān)；隨著電化學(xué)脫鋰o-LiMnO2發(fā)生一系列相變。證實(shí)了文獻(xiàn)的理論計(jì)算和由晶體學(xué)推測(cè)出的相變過程，即相變產(chǎn)物中先后出現(xiàn)巖鹽型錳酸鋰和類尖晶石型錳酸鋰。相變結(jié)束后，產(chǎn)物中只有巖鹽型和類尖晶石錳酸鋰2種物相。隨著充電的進(jìn)行, 都有 Li+從巖鹽型和類尖晶石錳酸鋰晶格中脫出，二者晶胞參數(shù)逐漸變小，微結(jié)構(gòu)也不斷變化

    Abstract:

    Phase transformation of layered orthorhombic Li1-xMnO2 (o-Li1-xMnO2, 0≤x≤0.95) during the first charging process (lithium ion deintercalation in electrochemical system) was investigated using ex-situ high-resolution X-ray diffraction and Rietveld refinement. The results reveal that the increasing speed of the o-LiMnO2 cathode’s voltages is related to the change of its microstructure. And a succession of phase transformation of the o-LiMnO2 occurs in the first lithium deintercalation process. Rock-salt typed lithium manganese oxides emerge followed by the appearance of the spinel-like typed, which confirms the phase transition process from theoretical computation and crystallography conjecture in literatures. Only the above-stated type lithium manganese oxides (originated from o-LiMnO2) exist in the final product. Lithium ions extract from lattices of the rock-salt typed and the spinel-like typed lithium manganese oxides; both the lattice parameters become smaller and their microstructures change with the charge proceeding

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

范廣新,曾躍武,陳榮升,呂光烈.正交Li1-xMnO2(0≤x≤0.95)首次充電過程中物相及結(jié)構(gòu)的演變[J].稀有金屬材料與工程,2011,40(3):424~428.[Fan Guangxin, Zeng Yuewu, Chen Rongsheng, Lü Guanglie. Evolutions of Phase and Microstructure of Orthorhombic Li1-xMnO2 (0≤x≤0.95) during the First Charge Process[J]. Rare Metal Materials and Engineering,2011,40(3):424~428.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)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:2010-03-25
  • 最后修改日期:2010-12-20
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: