Synthesis of octahedral Fe_3O_4@C Nanostructures via a Reducing-Composite-Hydroxide-Mediated approach and their properties
详细信息 查看官网全文
- 英文论文题名：Synthesis of octahedral Fe_3O_4@C Nanostructures via a Reducing-Composite-Hydroxide-Mediated approach and their properties
- 论文作者：Min Liu ; Hongyun Jin ; Shuen Hou
- 英文论文作者：Min Liu ; Hongyun Jin ; Shuen Hou ; Faculty of Materials Science and Chemistry ; China University of Geosciences
- 年：2016
- 作者机构：Faculty of Materials Science and Chemistry,China University of Geosciences;
- 会议召开时间：2016-09-23
- 会议录名称：中部四省化学化工学会2016年学术年会摘要集
- 语种：英文
- 分类号：TM912;TB332
- 学会代码：JXHX
- 会议名称：中部四省化学化工学会2016年学术年会
- 会议地点：中国江西南昌
- 主办单位：中国化学会湖北代表处
- 学会名称：江西省化学化工学会
- 页数：1
- 文件大小：250k
- 原文格式：D
- 会议级别：地方
摘要
Magnetite(Fe_3O_4) has been regarded as a promising anode material for lithium-ion batteries(LIBs) due to its high theoretical capacity,low-field magnetic separation,low cost,and environmental friendliness.However,its commercial application in lithium-ion batteries is still hindered by its poor cycling stability and low rate capability,resulted from its large volume expansion/extraction upon long-term cycling and intrinsic low conductivity.To address the aforementioned challenges,we present a novel one-pot synthesis of carbon coated monocrystalline Fe_3O_4 with octahedral structure as high-performance anode materials for LIBs,using a reducing-composite-hydroxide-mediated(R-CHM) method.The resulted octahedral Fe_3O_4@C electrode exhibits outstanding rate capability(600,450,340,278,187,455,150 and 124 mA h g-1 at 0.2,0.5,1,2,3,5 and 10C) and excellent cycling stability with a retained capacity of 300 mA h g~(-1) after 20 cycles at an extremely high specific current of 3C.Such encouraging results indicate that octahedral Fe_3O_4@C nanostructure can provide a new insight into the development of long-life electrodes for future rechargeable lithium ion batteries(LIBs).More importantly,the R-CHM method developed in our work can be extended to synthesis of other functional nanocomposites for various applications thanks to its versatility.
Magnetite(Fe_3O_4) has been regarded as a promising anode material for lithium-ion batteries(LIBs) due to its high theoretical capacity,low-field magnetic separation,low cost,and environmental friendliness.However,its commercial application in lithium-ion batteries is still hindered by its poor cycling stability and low rate capability,resulted from its large volume expansion/extraction upon long-term cycling and intrinsic low conductivity.To address the aforementioned challenges,we present a novel one-pot synthesis of carbon coated monocrystalline Fe_3O_4 with octahedral structure as high-performance anode materials for LIBs,using a reducing-composite-hydroxide-mediated(R-CHM) method.The resulted octahedral Fe_3O_4@C electrode exhibits outstanding rate capability(600,450,340,278,187,455,150 and 124 mA h g-1 at 0.2,0.5,1,2,3,5 and 10C) and excellent cycling stability with a retained capacity of 300 mA h g~(-1) after 20 cycles at an extremely high specific current of 3C.Such encouraging results indicate that octahedral Fe_3O_4@C nanostructure can provide a new insight into the development of long-life electrodes for future rechargeable lithium ion batteries(LIBs).More importantly,the R-CHM method developed in our work can be extended to synthesis of other functional nanocomposites for various applications thanks to its versatility.
Magnetite(Fe_3O_4) has been regarded as a promising anode material for lithium-ion batteries(LIBs) due to its high theoretical capacity,low-field magnetic separation,low cost,and environmental friendliness.However,its commercial application in lithium-ion batteries is still hindered by its poor cycling stability and low rate capability,resulted from its large volume expansion/extraction upon long-term cycling and intrinsic low conductivity.To address the aforementioned challenges,we present a novel one-pot synthesis of carbon coated monocrystalline Fe_3O_4 with octahedral structure as high-performance anode materials for LIBs,using a reducing-composite-hydroxide-mediated(R-CHM) method.The resulted octahedral Fe_3O_4@C electrode exhibits outstanding rate capability(600,450,340,278,187,455,150 and 124 mA h g-1 at 0.2,0.5,1,2,3,5 and 10C) and excellent cycling stability with a retained capacity of 300 mA h g~(-1) after 20 cycles at an extremely high specific current of 3C.Such encouraging results indicate that octahedral Fe_3O_4@C nanostructure can provide a new insight into the development of long-life electrodes for future rechargeable lithium ion batteries(LIBs).More importantly,the R-CHM method developed in our work can be extended to synthesis of other functional nanocomposites for various applications thanks to its versatility.
引文