In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage
文献类型：期刊论文
| 作者 | Yue, YH ; Han, PX ; He, X ; Zhang, KJ ; Liu, ZH ; Zhang, CJ ; Dong, SM ; Gu, L ; Cui, GL |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:11页码:4938 |
| 关键词 | LI-ION BATTERIES TITANIUM NITRIDE CARBON NANOTUBES ANODE MATERIALS FILMS TIN NANOPARTICLES NANOSHEETS CAPACITY |
| ISSN号 | 0959-9428 |
| 通讯作者 | Gu, L: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | A graphene/titanium nitride (G/TiN) hybrid as an anode material of lithium ion batteries is prepared by a simple in situ hydrolysis method combined with ammonia annealing. TiN nanoparticles as obtained are similar to 5 nm in size and homogeneously anchored on G. The G/TiN hybrid anode delivers a reversible capacity as high as 646 mA h g(-1) at 20 mA g(-1) and exhibits an enhanced initial coulombic efficiency of 75%, much higher than that of pure graphene (G: 52%) in the first cycle. The capacity retention is as much as 86% after 200 cycles. At a current density of 2000 mA g(-1), the hybrid anode still retains 325 mA h g(-1) while that of G is only 98 mA h g(-1). It is demonstrated that the G/TiN hybrids display a superior electrochemical performance owing to the highly efficient mixed (electron and Li+) conducting network. The internal defects between G layers induced by nitrogen-doping in G/TiN may improve reversible Li storage, whereas the catalytic sites on the surface of G related to the decomposition of the electrolyte may be occupied by TiN, leading to a decreased irreversible capacity. Moreover, the formation of Li3N in the interface is beneficial to interface transport, which is confirmed by aberration-corrected scanning transmission electron microscopy. The anchoring of TiN nanoparticles on G is promising prospect for energy storage applications in high performance lithium-ion batteries. |
| 收录类别 | SCI |
| 资助信息 | Chinese Academy of Sciences; National Key Basic Research Program of China [2011CB935700]; Shandong Province Funds for Distinguished Young Scientist [JQ200906]; National Natural Science Foundation of China [20971077] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/39720]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yue, YH,Han, PX,He, X,et al. In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(11):4938. |
| APA | Yue, YH.,Han, PX.,He, X.,Zhang, KJ.,Liu, ZH.,...&Cui, GL.(2012).In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage.JOURNAL OF MATERIALS CHEMISTRY,22(11),4938. |
| MLA | Yue, YH,et al."In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage".JOURNAL OF MATERIALS CHEMISTRY 22.11(2012):4938. |
入库方式： OAI收割
来源：物理研究所
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