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
表面包覆對(duì)非晶態(tài)CeMg12合金電化學(xué)性能的影響
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:


Effects of Surface Coating on the Electrochemical Properties of Amorphous CeMg12 Composite
Author:
Affiliation:

Fund Project:

National “863” Program Foundation (2006AA05Z129, 2006AA05Z143) and National “973” Program Foundation (2007CB209706)

  • 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:

    采用在CeMg12中添加鎳粉球磨制備非晶態(tài)合金，并研究化學(xué)鍍表面包覆Ni對(duì)其電化學(xué)性能的影響。結(jié)果表明，非晶態(tài)CeMg12具有很高的電化學(xué)放電容量，CeMg12+200%Ni(質(zhì)量分?jǐn)?shù))球磨50 h后復(fù)合電極材料電化學(xué)容量達(dá)到1209.6 mAh/g，但是電化學(xué)循環(huán)穩(wěn)定性較差，10次循環(huán)保持率為37.26%。通過化學(xué)鍍鎳進(jìn)行表面包覆能明顯提高合金的綜合電化學(xué)性能?；瘜W(xué)鍍表面包覆Ni后，合金10個(gè)循環(huán)的保持率上升到69.67%；同時(shí)由于添加的Ni和包覆Ni的共同催化作用，合金高倍率性能也得到了相應(yīng)的提高，HRD900由原來的54.2%提升到72.4%；但是由于化學(xué)鍍過程中部分合金被氧化，使復(fù)合合金的最大放電容量略有下降

    Abstract:

    Amorphous CeMg12 was prepared by ball milled CeMg12 alloy with Ni powder. The effects of mechanical grinding and electroless deposition of nickel (EDN) on the electrochemical properties of CeMg12 composites have been studied systematically. Amorphous CeMg12 composites have a maximum discharge capacity of 1209.6 mAh/g, but their cycling stability is poor. The cycling retention rate of the electrode is 37.26% after 10 cycles. After EDN treatment, the cycling stability of CeMg12 composite is improved markedly, and the cycling retention rate increases to 63.67% after 10 cycles. The improvement of cycling retention rate can be attributed to compact nickel coating that prevents the inner Mg from further corrosion by alkali. The nickel coating also enhances the high rate discharge (HRD) property of the composite owning to the good electrochemical catalytic properties of Ni. As oxidation and corrosion is unavoidable during EDN treatment, the maximum discharge capacity decreases slightly for CeMg12 composite with EDN treatment

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

陳如柑,王新華,葛紅衛(wèi),李壽權(quán),陳立新,陳長聘.表面包覆對(duì)非晶態(tài)CeMg12合金電化學(xué)性能的影響[J].稀有金屬材料與工程,2009,38(2):198~202.[Chen Rugan, Wang Xinhua, Ge Hongwei, Li Shouquan, Chen Lixin, Chen Changpin. Effects of Surface Coating on the Electrochemical Properties of Amorphous CeMg12 Composite[J]. Rare Metal Materials and Engineering,2009,38(2):198~202.]
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:2008-02-25
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: