Topological Defect Engineering on Carbon Electrode for Advanced Batteries

先进电池碳电极的拓扑缺陷工程

• 批准号: 22K14757
• 负责人: YU WEI
• 金额: $ 3万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K14757/
• 关键词: Topological Defect; Carbon Material; Lithium-Oxygen Battery; Lithium-Gas Battery

Content: Topological-defect-rich and edge-site-free graphene mesosponge (GMS) was successfully synthesized by chemical vapor deposition. The properties of GMS were characterized by X-ray diffraction, nitrogen adsorption-desorption, Raman spectroscopy, and temperature-programmed desorption. Lithium-oxygen battery performance was evaluated using cyclic voltammetry and discharge-charge tests. The discharge-charge mechanism was investigated by quantitative and qualitative methods. Importance: for the first time, we confirmed the abundant existence of topological defects on GMS through comprehensive characterizations. Moreover, the catalytic effect of topological defects in Li-O2 batteries was estimated without the influence of edge sites, which was not achieved in previous reports.

内容：采用化学气相沉积法成功合成了富含拓扑缺陷且无边缘位的石墨烯介孔海绵（GMS）。采用X射线衍射、氮气吸附-脱附、拉曼光谱和程序升温脱附等方法对GMS的性能进行了表征。采用循环伏安法和充放电测试评价了锂氧电池的性能。采用定量和定性的方法研究了充放电机理。重要性：通过全面的表征，我们首次证实了GMS上存在丰富的拓扑缺陷。此外，拓扑缺陷在锂氧电池中的催化作用估计没有边缘网站的影响，这是以前的报告中没有实现。

项目成果

GO/mesoporous Carbon Composite Membrane for Durable Cathode of Li-O2 Batteries

用于锂氧电池耐用正极的GO/介孔碳复合膜

• 发表时间: 2022
• 作者: Wei Yu;Takeharu Yoshii;Rui Tang;Zheng-Ze Pan;Hirotomo Nishihara
• 通讯作者: Hirotomo Nishihara

リチウム空気電池および多孔質炭素膜の製造方法

锂空气电池及多孔碳膜的制造方法

• 发表时间: 2022