介观结构碳纳米笼作为高性能锂离子电池和钠离子电池负极材料
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- 英文论文题名：Hierarchical carbon nanocages as high-rate anodes for high performance Li- and Na-ion batteries
- 论文作者：刘萌 ; 吕之阳 ; 杨立军 ; 吴强 ; 王喜章 ; 胡征
- 英文论文作者：Meng Liu ; Zhiyang Lyu ; Lijun Yang ; Qiang Wu ; Xizhang Wang ; Zheng Hu ; Key Laboratory of Mesoscopic Chemistry of MOE ; School of Chemistry and Chemical Engineering ; Nanjing University
- 年：2016
- 作者机构：介观化学教育部重点实验室南京大学化学化工学院;
- 论文关键词：分级结构碳纳米笼 ; 锂离子电池 ; 钠离子电池 ; 负极材料 ; 高倍率性能
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十二分会：能源纳米材料物理化学
- 语种：中文
- 分类号：TM912
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十二分会 ; 能源纳米材料物理化学
- 会议地点：中国辽宁大连
- 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：286k
- 原文格式：D
- 会议级别：全国
摘要
介观结构的碳纳米笼作为锂离子电池和钠离子电池负极材料具有极大的优势,其独特的介观结构有利于电解液渗透、离子传输和电子传导,且结构稳定性好,展现出优异的高倍率性能和稳定性1,2。作为锂离子电池负极材料,在0.1 A g~(-1)的电流密度下经过10圈循环后可获得970 mAh g~(-1)的稳定比容量;在25 A g~(-1)下循环10000圈后,可逆容量仍可稳定在229 mAh g~(-1),其功率密度和能量密度可分别达到37 kW kg~(-1)和339 Wh kg~(-1)。作为钠离子电池负极材料,可在10 A g~(-1)的高电流密度下仍可输出~50 mAh·g–1的比容量3。这些结果表明介观结构的碳纳米笼在锂离子电池和钠离子电池中具有重要的应用前景。
Novel hierarchical carbon nanocages(hCNCs) are used as high-rate anodes for Li-and Na-ion batteries. The unique structure of the porous network for hCNCs greatly favors electrolyte penetration, ion diffusion, electron conduction, and structural stability, resulting in high rate capability and excellent cyclability. For lithium storage, the corresponding electrode stores a steady reversible capacity of 970 mAh·g~(–1) at a rate of 0.1 A·g~(–1) after 10 cycles, and stabilizes at 229 mAh·g~(–1) after 10,000 cycles at a high rate of 25 A·g~(–1) while delivering a large specific power of 37 kW·kg_(electrode)~(–1) and specific energy of 339 Wh·kg_(electrode)~(–1). For sodium storage, the hCNC reaches a high discharge capacity of ~50 mAh·g~(–1) even at a high rate of 10 A·g~(–1).
Novel hierarchical carbon nanocages(hCNCs) are used as high-rate anodes for Li-and Na-ion batteries. The unique structure of the porous network for hCNCs greatly favors electrolyte penetration, ion diffusion, electron conduction, and structural stability, resulting in high rate capability and excellent cyclability. For lithium storage, the corresponding electrode stores a steady reversible capacity of 970 mAh·g~(–1) at a rate of 0.1 A·g~(–1) after 10 cycles, and stabilizes at 229 mAh·g~(–1) after 10,000 cycles at a high rate of 25 A·g~(–1) while delivering a large specific power of 37 kW·kg_(electrode)~(–1) and specific energy of 339 Wh·kg_(electrode)~(–1). For sodium storage, the hCNC reaches a high discharge capacity of ~50 mAh·g~(–1) even at a high rate of 10 A·g~(–1).
引文
[1]Hassoun,J.;Lee,K.S.;Sun,Y.K.;Scrosati,B.J.Am.Chem.Soc.2011,133:3139.
[2]You,Y.;Yu,X.Q.;Yin,Y.X.;Nam,K.W.;Guo,Y.G.Nano Res.2015,8:117.
[3]Lyu,Z.Y.;Yang,L.J.;Xu,D.;Zhao,J.;Lai,H.W.;Jiang,Y.F.;Wu,Q.;Li,Y.;Wang,X.Z.;Hu,Z.Nano Res.2015,8:3535.
[2]You,Y.;Yu,X.Q.;Yin,Y.X.;Nam,K.W.;Guo,Y.G.Nano Res.2015,8:117.
[3]Lyu,Z.Y.;Yang,L.J.;Xu,D.;Zhao,J.;Lai,H.W.;Jiang,Y.F.;Wu,Q.;Li,Y.;Wang,X.Z.;Hu,Z.Nano Res.2015,8:3535.