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Nanostructured silicon/porous carbon spherical composite as a high capacity anode for Li-ion batteries
Shao, Dan1,2; Tang, Daoping1; Mai, Yongjin1; Zhang, Lingzhi1
2013
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
卷号1期号:47页码:15068-15075
摘要A nanostructured silicon/porous carbon spherical composite was prepared by a simple hydrothermal method using glucose as a carbon source and Pluronic F127 as a soft template/pore forming agent in the presence of silicon nanoparticles, and a subsequent carbonization process. In this composite, silicon nanoparticles were individually and separately coated with a porous carbon shell with a thickness of 15-20 nm and a pore size of 3-5 nm. The composite electrode exhibited excellent cycling stability and rate capability, delivering a stable capacity of 1607 mA h g(-1) at a current density of 0.4 A g(-1) after 100 cycles, and a reversible capacity of 1050 mA h g(-1) even at a high current density of 10 A g(-1). Detailed analysis of cyclic voltammetry and electrochemical impedance spectroscopy revealed that the composite showed favorable electrochemical kinetics due to the nano-sized porous carbon shell, which facilitated the formation of a solid electrolyte interface film and the transportation of Li ions and electrons, and decreased the charge transfer resistance, thus significantly improving the electrochemical performance compared with the bare nano-Si electrode.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1039/c3ta13616g
研究领域[WOS]Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]RECHARGEABLE LITHIUM BATTERIES ; POROUS SI/C COMPOSITES ; ELECTROCHEMICAL PERFORMANCE ; ELECTROANALYTICAL BEHAVIOR ; STORAGE PERFORMANCE ; GRAPHITE-ELECTRODES ; NEGATIVE ELECTRODES ; AMORPHOUS-SILICON ; NANOPARTICLES ; IMPEDANCE
收录类别SCI
语种英语
WOS类目Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号WOS:000326984500033
引用统计
被引频次:74[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10104
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Shao, Dan,Tang, Daoping,Mai, Yongjin,et al. Nanostructured silicon/porous carbon spherical composite as a high capacity anode for Li-ion batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2013,1(47):15068-15075.
APA Shao, Dan,Tang, Daoping,Mai, Yongjin,&Zhang, Lingzhi.(2013).Nanostructured silicon/porous carbon spherical composite as a high capacity anode for Li-ion batteries.JOURNAL OF MATERIALS CHEMISTRY A,1(47),15068-15075.
MLA Shao, Dan,et al."Nanostructured silicon/porous carbon spherical composite as a high capacity anode for Li-ion batteries".JOURNAL OF MATERIALS CHEMISTRY A 1.47(2013):15068-15075.
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