| In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage | |
Yue, Yanhua2; Han, Pengxian2; He, Xiang1; Zhang, Kejun2; Liu, Zhihong2; Zhang, Chuanjian2; Dong, Shanmu2; Gu, Lin1; Cui, Guanglei2
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| 2012 | |
| 发表期刊 | JOURNAL OF MATERIALS CHEMISTRY
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| 卷号 | 22期号:11页码:4938-4943 |
| 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. |
| 文章类型 | Article |
| 学科领域 | 仿生能源系统 |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1039/c2jm16128a |
| 关键词[WOS] | LI-ION BATTERIES ; TITANIUM NITRIDE ; CARBON NANOTUBES ; ANODE MATERIALS ; FILMS ; TIN ; NANOPARTICLES ; NANOSHEETS ; CAPACITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Materials Science |
| WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary |
| WOS记录号 | WOS:000300571400057 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/991 |
| 专题 | 仿生与固态能源系统研究组 |
| 作者单位 | 1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yue, Yanhua,Han, Pengxian,He, Xiang,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):4938-4943. |
| APA | Yue, Yanhua.,Han, Pengxian.,He, Xiang.,Zhang, Kejun.,Liu, Zhihong.,...&Cui, Guanglei.(2012).In situ synthesis of a graphene/titanium nitride hybrid material with highly improved performance for lithium storage.JOURNAL OF MATERIALS CHEMISTRY,22(11),4938-4943. |
| MLA | Yue, Yanhua,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):4938-4943. |
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