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
Improved Cycle Stability of La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x=0-0.4) Electrode Alloys by Melt Spinning
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:


Improved Cycle Stability of La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x=0-0.4) Electrode Alloys by Melt Spinning
Author:
Affiliation:

Fund Project:

National Natural Science Foundations of China (50871050, 50961001); Natural Science Foundation of Inner Mongolia, China (2010ZD05); High Education Science Research Project of Inner Mongolia, China (NJzy08071)

  • 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
    • |
  • 文章評論
    摘要:

    為了改善La-Mg-Ni系A(chǔ)2B7型電極合金的電化學(xué)循環(huán)穩(wěn)定性，用Pr部分替代合金中的La，并用熔體快淬工藝制備了La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x = 0, 0.1, 0.2, 0.3, 0.4)電極合金。用XRD、SEM、TEM分析了鑄態(tài)及快淬態(tài)合金的微觀結(jié)構(gòu)。結(jié)果表明，鑄態(tài)及快淬態(tài)合金均具有多相結(jié)構(gòu)，包括2個(gè)主相(La,Mg)Ni3及LaNi5和1個(gè)殘余相LaNi2。熔體快淬導(dǎo)致LaNi5相增加而(La,Mg)Ni3相減少。電化學(xué)測試結(jié)果表明，熔體快淬顯著地提高合金的電化學(xué)循環(huán)穩(wěn)定性。當(dāng)淬速從0 m/s (鑄態(tài)被定義為淬速0 m/s)增加到20 m/s時(shí)，x=0合金100次充放循環(huán)后的容量保持率從65.32%增加到73.97%，x=0.4合金的容量保持率從79.36%增加到93.08%。

    Abstract:

    In order to improve the electrochemical cycle stability of the La-Mg-Ni system A2B7-type electrode alloys, La in the alloy was partially substituted by Pr. The melt-spinning technology was used for preparing La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x = 0, 0.1, 0.2, 0.3, 0.4) electrode alloys. The microstructures of the as-cast and spun alloys were investigated by XRD, SEM and TEM. The results show that the as-cast and spun alloys have a multiphase structure, consisting of two main phases (La,Mg)Ni3 and LaNi5 as well as a residual phase LaNi2. The melt spinning leads to an obvious increase of the LaNi5 phase and a decrease of the (La,Mg)Ni3 phase in the alloys. The melt spinning significantly improves the cycle stability of the alloys. The capacity retaining rate at 100th charging and discharging cycle (S100) is enhanced from 65.32% to 73.97% for the x = 0 alloy and from 79.36% to 93.08% for the x = 0.4 alloy with increasing of spinning rate from 0 m/s (as-cast was defined as spinning rate of 0 m/s) to 20 m/s.

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

張羊換,趙棟梁,任慧平,郭世海,祁 焱,王新林. Improved Cycle Stability of La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x=0-0.4) Electrode Alloys by Melt Spinning[J].稀有金屬材料與工程,2011,40(8):1329~1333.[Zhang Yanghuan, Zhao Dongliang, Ren Huiping, Guo Shihai, Qi Yan, Wang Xinlin. Improved Cycle Stability of La0.75-xPrxMg0.25Ni3.2Co0.2Al0.1 (x=0-0.4) Electrode Alloys by Melt Spinning[J]. Rare Metal Materials and Engineering,2011,40(8):1329~1333.]
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:2010-08-25
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: