Direct Synthesis Few-layer F-doped Graphene Foam and Its Potassium Storage Properties
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- 英文论文题名：Direct Synthesis Few-layer F-doped Graphene Foam and Its Potassium Storage Properties
- 论文作者：Zhicheng Ju ; Shuai Zhang ; Zheng Xing ; Quanchao Zhuang ; Yinghuai Qiang
- 英文论文作者：Zhicheng Ju ; Shuai Zhang ; Zheng Xing ; Quanchao Zhuang ; Yinghuai Qiang ; School of Materials Science and Engineering ; China University of Mining and technology
- 年：2016
- 作者机构：School of Materials Science and Engineering, China University of Mining and technology;
- 会议召开时间：2016-10-28
- 会议录名称：2016淮海绿色功能材料论坛暨第三届徐州清洁能源材料论坛摘要集
- 语种：英文
- 分类号：TQ127.11;TM912
- 学会代码：ZGHY
- 会议名称：2016淮海绿色功能材料论坛暨第三届徐州清洁能源材料论坛
- 会议地点：中国江苏徐州
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：4969k
- 原文格式：D
- 会议级别：全国
摘要
In recent years, rechargeable lithium-ion batteries(LIBs) have been extensively applied to portable electronics and light vehicles due to their noticeable advantages.[1, 2] However, the large-scale use of LIBs may bring about a shortage of lithium resources. This shortcoming has motivated us to study other types of batteries.[3] The recently results of the Ji group have shown that K ions can be reversibly intercalation/deintercalation in the graphite material and showed better electrochemical storage performance.[4] Here, a solid state method using polyvinylidene fluoride as a single-source reactant is described for the synthesis of few-layer F-doped graphene foam(FFGF) with an average thickness of 4 nm and high surface area(874 m~2g~(-1)), which as anode material for potassium ion batteries exhibited a high potassium storage capacity(more than 320 m Ah·g~(-1) at 50 m A·g~(-1)), good rate capability and excellent cycle performance even at a very high current density(165.9 m Ah·g~(-1) at 500 m A·g~(-1) for 200 cycles).[5] These indicate that the multiple synergistic effects of the F-modified, high surface areas and mesoporous membrane structures endow the excellent electrochemical performance. Furthermore, the insights obtained will be of benefit in the design of future anode materials for alkali metal ion batteries.
In recent years, rechargeable lithium-ion batteries(LIBs) have been extensively applied to portable electronics and light vehicles due to their noticeable advantages.[1, 2] However, the large-scale use of LIBs may bring about a shortage of lithium resources. This shortcoming has motivated us to study other types of batteries.[3] The recently results of the Ji group have shown that K ions can be reversibly intercalation/deintercalation in the graphite material and showed better electrochemical storage performance.[4] Here, a solid state method using polyvinylidene fluoride as a single-source reactant is described for the synthesis of few-layer F-doped graphene foam(FFGF) with an average thickness of 4 nm and high surface area(874 m~2g~(-1)), which as anode material for potassium ion batteries exhibited a high potassium storage capacity(more than 320 m Ah·g~(-1) at 50 m A·g~(-1)), good rate capability and excellent cycle performance even at a very high current density(165.9 m Ah·g~(-1) at 500 m A·g~(-1) for 200 cycles).[5] These indicate that the multiple synergistic effects of the F-modified, high surface areas and mesoporous membrane structures endow the excellent electrochemical performance. Furthermore, the insights obtained will be of benefit in the design of future anode materials for alkali metal ion batteries.
In recent years, rechargeable lithium-ion batteries(LIBs) have been extensively applied to portable electronics and light vehicles due to their noticeable advantages.[1, 2] However, the large-scale use of LIBs may bring about a shortage of lithium resources. This shortcoming has motivated us to study other types of batteries.[3] The recently results of the Ji group have shown that K ions can be reversibly intercalation/deintercalation in the graphite material and showed better electrochemical storage performance.[4] Here, a solid state method using polyvinylidene fluoride as a single-source reactant is described for the synthesis of few-layer F-doped graphene foam(FFGF) with an average thickness of 4 nm and high surface area(874 m~2g~(-1)), which as anode material for potassium ion batteries exhibited a high potassium storage capacity(more than 320 m Ah·g~(-1) at 50 m A·g~(-1)), good rate capability and excellent cycle performance even at a very high current density(165.9 m Ah·g~(-1) at 500 m A·g~(-1) for 200 cycles).[5] These indicate that the multiple synergistic effects of the F-modified, high surface areas and mesoporous membrane structures endow the excellent electrochemical performance. Furthermore, the insights obtained will be of benefit in the design of future anode materials for alkali metal ion batteries.
引文
[1]Z.Xing,Z.Ju,J.Yang,H.Xu,Y.Qian,One-step hydrothermal synthesis of Zn Fe2O4 nano-octahedrons as a high capacity anode material for Li-ion batteries,Nano Research,5(2012)477-485.
[2]Z.Ju,E.Zhang,Y.Zhao,Z.Xing,Q.Zhuang,Y.Qiang,Y.Qian,One-Pot Hydrothermal Synthesis of Fe Mo O4Nanocubes as an Anode Material for Lithium-Ion Batteries with Excellent Electrochemical Performance,Small,11(2015)4753-4761.
[3]G.Ma,K.Huang,Q.Zhuang,Z.Ju,Superior cycle stability of nitrogen-doped graphene nanosheets for Na-ion batteries,Materials Letters,174(2016)221-225.
[4]Z.Jian,W.Luo,X.Ji,Carbon Electrodes for K-Ion Batteries,J.Am.Chem.Soc.,137(2015)11566-11569.
[5]Z.Ju,S.Zhang,Z.Xing,Q.Zhuang,Y.Qiang,Y.Qian,Direct Synthesis of Few-Layer F-Doped Graphene Foam and Its Lithium/Potassium Storage Properties,ACS Applied Materials&Interfaces,8(2016)20682-20690.
[2]Z.Ju,E.Zhang,Y.Zhao,Z.Xing,Q.Zhuang,Y.Qiang,Y.Qian,One-Pot Hydrothermal Synthesis of Fe Mo O4Nanocubes as an Anode Material for Lithium-Ion Batteries with Excellent Electrochemical Performance,Small,11(2015)4753-4761.
[3]G.Ma,K.Huang,Q.Zhuang,Z.Ju,Superior cycle stability of nitrogen-doped graphene nanosheets for Na-ion batteries,Materials Letters,174(2016)221-225.
[4]Z.Jian,W.Luo,X.Ji,Carbon Electrodes for K-Ion Batteries,J.Am.Chem.Soc.,137(2015)11566-11569.
[5]Z.Ju,S.Zhang,Z.Xing,Q.Zhuang,Y.Qiang,Y.Qian,Direct Synthesis of Few-Layer F-Doped Graphene Foam and Its Lithium/Potassium Storage Properties,ACS Applied Materials&Interfaces,8(2016)20682-20690.