Ultrathin 2D Mesoporous TiO2/rGO Heterostructure for High-Performance Lithium Storage
文献类型：期刊论文
| 作者 | Liang, Yaru; Xiong, Xiang; Xu, Zhuijun; Xia, Qingbing; Wan, Liyang; Liu, Rutie; Chen, Guoxin; Chou, Shu-Lei |
| 刊名 | SMALL
 |
| 出版日期 | 2020 |
| 卷号 | 16期号:26 |
| 关键词 | REDUCED GRAPHENE OXIDE ANODE MATERIAL ANATASE TIO2 PHOTOCATALYTIC ACTIVITY ION BATTERIES LI STORAGE CARBON NANOCOMPOSITE NANOFIBERS COMPOSITE |
| DOI | 10.1002/smll.202000030 |
| 英文摘要 | Lithium-ion batteries (LIBs) have been widely applied and studied as an effective energy supplement for a variety of electronic devices. Titanium dioxide (TiO2), with a high theoretical capacity (335 mAh g(-1)) and low volume expansion ratio upon lithiation, has been considered as one of the most promising anode materials for LIBs. However, the application of TiO2 is hindered by its low electrical conductivity and slow ionic diffusion rate. Herein, a 2D ultrathin mesoporous TiO2/reduced graphene (rGO) heterostructure is fabricated via a layer-by-layer assembly process. The synergistic effect of ultrathin mesoporous TiO2 and the rGO nanosheets significantly enhances the ionic diffusion and electron conductivity of the composite. The introduced 2D mesoporous heterostructure delivers a significantly improved capacity of 350 mAh g(-1) at a current density of 200 mA g(-1) and excellent cycling stability, with a capacity of 245 mAh g(-1) maintained over 1000 cycles at a high current density of 1 A g(-1). The in situ transmission electron microscopy analysis indicates that the volume of the as-prepared 2D heterostructures changes slightly upon the insertion and extraction of Li+, thus contributing to the enhanced long-cycle performance. |
| 学科主题 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20746]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Xiong, X (corresponding author), Cent South Univ, State Key Lab Powder Met, Lushan South Rd, Changsha 410083, Peoples R China. 2.Chen, GX (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Chou, SL (corresponding author), Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, Innovat Campus, North Wollongong, NSW 2522, Australia. |
| 推荐引用方式 GB/T 7714 | Liang, Yaru,Xiong, Xiang,Xu, Zhuijun,et al. Ultrathin 2D Mesoporous TiO2/rGO Heterostructure for High-Performance Lithium Storage[J]. SMALL,2020,16(26). |
| APA | Liang, Yaru.,Xiong, Xiang.,Xu, Zhuijun.,Xia, Qingbing.,Wan, Liyang.,...&Chou, Shu-Lei.(2020).Ultrathin 2D Mesoporous TiO2/rGO Heterostructure for High-Performance Lithium Storage.SMALL,16(26). |
| MLA | Liang, Yaru,et al."Ultrathin 2D Mesoporous TiO2/rGO Heterostructure for High-Performance Lithium Storage".SMALL 16.26(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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