Scalable synthesis of hierarchical porous Ge/rGO microspheres with an ultra-long cycling life for lithium storage
文献类型：期刊论文
| 作者 | Wang, Bangrun1; Jin, Jun; Rui, Kun; Zhu, Chenxi; Wen, Zhaoyin |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2018 |
| 卷号 | 396页码:124 |
| 关键词 | Lithium-ion batteries Anode materials Germanium Spray drying Hierarchical porous structure |
| ISSN号 | 0378-7753 |
| DOI | 10.1016/j.jpowsour.2018.06.024 |
| 英文摘要 | The hierarchical porous germanium/reduced graphene oxide (Ge/rGO) microspheres are synthesized through an industrially scalable spray drying technique using commercial germanium dioxide (GeO2) as raw material. The Ge/rGO microspheres architecture with Ge nanoparticles homogeneously embedded in the three-dimensional (3D) interconnected conductive rGO network. When employed as anode for lithium ion batteries (LIBs), the as-obtained Ge/rGO microspheres exhibit excellent electrochemical performance with a high reversible capacity (811 mAh g(-1) after 1000 cycles), ultra-long cycling life (over 80% capacity retention from the 6th to 1000th cycles at 1 C), and high rate capability (380 mAh g(-1) at 20 C). In addition, the full cell consisting of Ge/rGO-2 anode and LiFePO4 cathode also delivers good cycling stability with high energy density. The 3D conductive rGO network provides the pathway for electron transportation and promotes to form stable solid electrolyte interphase (SEI) layer. Furthermore, the void space deduced from the porous structure can effectively accommodate volume changes and enhance the structural integrity of Ge/rGO microspheres. This facile and scalable synthetic strategy is beneficial for large-scale production of Ge-based electrode materials for further application in high energy and power density LIBs. |
| 学科主题 | Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS记录号 | WOS:000440876700016 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | This work was financially supported from the National Natural Science Foundation of China (NSFC) project no. 51432010, JCKY2016130B010, and the Shanghai Engineering Research Center of Inorganic Energy Materials and Electric Power Sources no. 18DZ2280800, and the National Key R&D Program of China no. 2018YFB0905400. ; This work was financially supported from the National Natural Science Foundation of China (NSFC) project no. 51432010, JCKY2016130B010, and the Shanghai Engineering Research Center of Inorganic Energy Materials and Electric Power Sources no. 18DZ2280800, and the National Key R&D Program of China no. 2018YFB0905400. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24708]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Bangrun,Jin, Jun,Rui, Kun,et al. Scalable synthesis of hierarchical porous Ge/rGO microspheres with an ultra-long cycling life for lithium storage[J]. JOURNAL OF POWER SOURCES,2018,396:124, 133. |
| APA | Wang, Bangrun,Jin, Jun,Rui, Kun,Zhu, Chenxi,&Wen, Zhaoyin.(2018).Scalable synthesis of hierarchical porous Ge/rGO microspheres with an ultra-long cycling life for lithium storage.JOURNAL OF POWER SOURCES,396,124. |
| MLA | Wang, Bangrun,et al."Scalable synthesis of hierarchical porous Ge/rGO microspheres with an ultra-long cycling life for lithium storage".JOURNAL OF POWER SOURCES 396(2018):124. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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