| Nitrogen-doping of chemically reduced mesocarbon microbead oxide for the improved performance of lithium ion batteries | |
Han, Pengxian; Yue, Yanhua; Zhang, Lixue; Xu, Hongxia; Liu, Zhihong; Zhang, Kejun; Zhang, Chuanjian; Dong, Shanmu; Ma, Wen; Cui, Guanglei
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| 2012-03-01 | |
| 发表期刊 | CARBON
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| 卷号 | 50期号:3页码:1355-1362 |
| 摘要 | Nitrogen was doped into chemically-reduced mesocarbon microbead oxide (CR-MCMBO) through simple annealing in ammonia at 800 _C, and the Li-ion storage properties of the prepared nitrogen-doped CR-MCMBO (NR-MCMBO) was studied. It was found that NR-MCMBO shows a highly reversible capacity of 762 mAh g_1 at 20 mA g_1 during the first charge process, which is much higher than that of the pristine MCMB (289 mAh g_1), and the specific capacity of NR-MCMBO still had a value of 535 mAh g_1 after 200 cycles. When the current density reaches 1000 mA g_1, the specific capacity of NR-MCMBO is 388 mAh g_1. The high reversible capacity of NR-MCMBO is attributed to the high amount of pyridinic nitrogen and the large number of defects induced by oxidation and nitrogen-doping. Moreover, the open pores constituted by graphene-like nanoplatelets on the spherical NR-MCMBO surface facilitate the diffusion of Li ions. ; Nitrogen was doped into chemically-reduced mesocarbon microbead oxide (CR-MCMBO) through simple annealing in ammonia at 800 degrees C, and the Li-ion storage properties of the prepared nitrogen-doped CR-MCMBO (NR-MCMBO) was studied. It was found that NR-MCMBO shows a highly reversible capacity of 762 mAh g(-1) at 20 mA g(-1) during the first charge process, which is much higher than that of the pristine MCMB (289 mAh g(-1)), and the specific capacity of NR-MCMBO still had a value of 535 mAh g(-1) after 200 cycles. When the current density reaches 1000 mA g(-1), the specific capacity of NR-MCMBO is 388 mAh g(-1). The high reversible capacity of NR-MCMBO is attributed to the high amount of pyridinic nitrogen and the large number of defects induced by oxidation and nitrogen-doping. Moreover, the open pores constituted by graphene-like nanoplatelets on the spherical NR-MCMBO surface facilitate the diffusion of Li ions. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved. |
| 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 | 10.1016/j.carbon.2011.11.007 |
| 关键词[WOS] | LI STORAGE PROPERTIES ; ANODE MATERIAL ; ELECTROCHEMICAL IMPEDANCE ; CARBON ; GRAPHITE ; GRAPHENE ; INSERTION ; CHALLENGES ; REDUCTION ; COMPOSITE |
| 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:000300471700072 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/999 |
| 专题 | 仿生与固态能源系统研究组 |
| 作者单位 | Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Pengxian,Yue, Yanhua,Zhang, Lixue,et al. Nitrogen-doping of chemically reduced mesocarbon microbead oxide for the improved performance of lithium ion batteries[J]. CARBON,2012,50(3):1355-1362. |
| APA | Han, Pengxian.,Yue, Yanhua.,Zhang, Lixue.,Xu, Hongxia.,Liu, Zhihong.,...&Cui, Guanglei.(2012).Nitrogen-doping of chemically reduced mesocarbon microbead oxide for the improved performance of lithium ion batteries.CARBON,50(3),1355-1362. |
| MLA | Han, Pengxian,et al."Nitrogen-doping of chemically reduced mesocarbon microbead oxide for the improved performance of lithium ion batteries".CARBON 50.3(2012):1355-1362. |
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