KMS Qingdao Institute of Biomass Energy and Bioprocess Technology ,CAS
| A theoretical study of different carbon coatings effect on the depolarization effect and electrochemical performance of LiFePO4 cathode | |
| Liu Tao; Cao, Fengting; Xiao, Lingxiao; Li, Xichao; Sun, Shimei; Sun, Xiaolin; Zang, Zhao; Niu, Quanhai; Wu, Jianfei; Wu Jianfei | |
| 2017-11-08 | |
| 发表期刊 | JOURNAL of ELECTROANALYTICAL CHEMISTRY
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| 卷号 | 807期号:15页码:52-58 |
| 摘要 | In this work, three categories of advanced carbon materials coated on current collector are investigated. The results indicate that carbon coating has a positive influence on the depolarization effect and electrochemical performance of LiFePO4 cathode, different carbon coatings have drastically different influences, high rates in particular. The epolarization effect and rate performance show the following order: Graphene nanosheets (GNs) > Carbon nanotubes (CNTs) > Activated carbons (ACs), and the differences of rate capacities among them become more and more obvious with increasing rates. Especially for 5C, the discharge capacities values are 122 mAh g−1, 114.8 mAh g−1, 106.8 mAh g−1 and 49.2 mAh g−1 for LFP-GNs-Al, LFP-CNTs-Al, LFP-ACs-Al and LFP-Al, respectively. The enhancement is attributed to the carbon coating acting as a transport system of electron between cathode materials and current collector, resulting in reducing the contact impedance within the electrodes, thus providing a favorable balance between fast ion diffusion and increased electron transport. |
| 文章类型 | Article |
| 关键词 | Carbon Coating Lifepo4 Depolarization Effect Electrochemical Performance Lithium-ion Battery |
| DOI | 10.1016/j.jelechem.2017.11.021 |
| 语种 | 英语 |
| 项目资助者 | National Natural Science Foundation of China (No.21673267), Shandong Provincial Natural Science Foundation (No.ZR2015QZ01), Qingdao Postdoctoral Application Research Project, and Qingdao Industrial Energy Storage Technology Institute. |
| WOS记录号 | WOS:000419414800007 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/9835 |
| 专题 | 先进储能材料与技术研究组 |
| 通讯作者 | Wu Jianfei |
| 作者单位 | 中国科学院青岛生物能源与过程研究所；(2)中国科学院大学 |
| 推荐引用方式 GB/T 7714 | Liu Tao,Cao, Fengting,Xiao, Lingxiao,et al. A theoretical study of different carbon coatings effect on the depolarization effect and electrochemical performance of LiFePO4 cathode[J]. JOURNAL of ELECTROANALYTICAL CHEMISTRY,2017,807(15):52-58. |
| APA | Liu Tao.,Cao, Fengting.,Xiao, Lingxiao.,Li, Xichao.,Sun, Shimei.,...&Wu Jianfei.(2017).A theoretical study of different carbon coatings effect on the depolarization effect and electrochemical performance of LiFePO4 cathode.JOURNAL of ELECTROANALYTICAL CHEMISTRY,807(15),52-58. |
| MLA | Liu Tao,et al."A theoretical study of different carbon coatings effect on the depolarization effect and electrochemical performance of LiFePO4 cathode".JOURNAL of ELECTROANALYTICAL CHEMISTRY 807.15(2017):52-58. |
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| A theoretical study （1913KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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