硅基复合材料的电化学特性

CORC > 厦门大学 > 2009年第15卷

	硅基复合材料的电化学特性; Electrochemical Characteristics of Silicon-based Composites
	徐欣欣 ; 杨军 ; XU Xin-xin ; YANG Jun
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract8550.shtml
	2009-02-28
关键词	多孔硅热处理负极材料锂离子电池 nano-porous Si heat treatment anode material lithium ion battery
英文摘要	将氧化亚硅,铝和石墨经过2步球磨盐酸刻蚀处理,再包覆碳,可制得纳米孔-S i/G/C复合材料,其比容量高达600 mAh/g,电化学循环性能稳定,但首次放电效率较低.氧化亚硅和铝球磨后再经高温热处理,可以促使氧化亚硅完全还原.高温下A l2O3产物的晶型结构由γ相转为稳定难溶的α相,硅/A l2O3复合材料难以刻蚀制孔,而硅/A l2O3/G/C复合材料则显示较高的首次放电效率但循环稳定性较差.; The nano-porous Si/G/C composite was obtained by two-step ball milling with SiO,A1 and graphite,along with HCl acid etching followed by carbon incorparation.This composite demonstrated the reversible capacity of 600 mAh/g with excellent cycling stability,but low initial cycle efficiency is low.A high-temperature treatment after ball-milling of SiO and A1 could promote the complete reduction of SiO.However,the crystalline structure of Al2O3 product changed from γ-phase to α-phase,which it can no longer be etched by HCl.The Si/Al2O3/G/C composite exhibited higher efficiency at the first cycle but relatively poorer cyclability.; 作者联系地址：上海交通大学化学化工学院;; Author's Address: School of Chemistry of Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58285]
专题	2009年第15卷
推荐引用方式 GB/T 7714	徐欣欣,杨军,XU Xin-xin,等. 硅基复合材料的电化学特性, Electrochemical Characteristics of Silicon-based Composites[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract8550.shtml,2009.
APA	徐欣欣,杨军,XU Xin-xin,&YANG Jun.(2009).硅基复合材料的电化学特性.http://electrochem.xmu.edu.cn/CN/abstract/abstract8550.shtml.
MLA	徐欣欣,et al."硅基复合材料的电化学特性".http://electrochem.xmu.edu.cn/CN/abstract/abstract8550.shtml (2009).