リチウム金属負極の性能向上ために織物テンプレート法で特異構造な銅集電体の開発

采用纺织模板法开发结构独特的铜集流体，提高锂金属负极性能

• 批准号: 22KJ0030
• 负责人: 朱 瑞傑
• 金额: $ 1.41万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KJ0030/
• 关键词: Performance improvement; Limited help; Cathode optimization; Publications; channel structures; aligned cotton fibers; lithiophilic; mass-transfer resistance; alleviated inactive Li; enhanced performance

The use of collectors with a hierarchically porous structure can optimize the deposition behavior of lithium (Li) metal to some extent. However, in practical studies, Li metal was found to be difficult to be deposited into the upright channel as expected, in its place, the Li metal exhibits a different deposition behavior than we expected. When the channel's diameter is large (greater than 20 μm), lithium metal typically accumulates near the tube wall opening. Conversely, when the diameter is small (less than 5 μm), lithium metal deposits solely on the current collector's upper surface. Even after incorporating materials that promote underpotential deposition (UPD) or irregular nucleation of lithium metal (such as silver) into the metal framework, lithium metal will amass near the channel entrance, creating an unsupported lithium layer. This occurs because the initially deposited lithium metal on the upper surface acts as a "nucleus," encouraging subsequent deposition primarily on the electrode surface. The resulting lithium metal plating obstructs ion transport into the channel, causing deposition to predominantly occur in the 3D structure's shallow region. Moreover, we find that the use of such materials can improve the performance of the sulfur cathode in lithium-sulfur batteries very well. The porous metal possesses an exceptional capacity to catalyze the cathodic reactions, while its multi-level porous architecture effectively enhances the discharge performance of high-capacity lithium-sulfur batteries.

采用分级多孔结构的收集器可以在一定程度上优化锂(Li)金属的沉积行为。然而，在实际研究中发现，锂金属很难像预期的那样沉积到垂直沟道中，在其位置上，锂金属表现出与我们预期的不同的沉积行为。当通道直径较大(大于20μm)时，锂金属通常聚集在管壁开口附近。相反，当直径较小(小于5μm)时，锂金属仅沉积在集电体的上表面。即使在金属骨架中加入了促进锂金属(如银)欠电位沉积(UPD)或不规则形核的材料后，锂金属仍会聚集在通道入口处附近，形成无支撑的锂层。这是因为最初沉积在上表面的锂金属起到了“核”的作用，鼓励随后的沉积主要是在电极表面。由此产生的锂金属电镀阻碍了离子进入通道的传输，导致沉积主要发生在3D结构的浅区。此外，我们还发现，这种材料的使用可以很好地改善锂硫电池中硫的正极性能。多孔金属具有优异的催化正极反应的能力，其多层多孔结构有效地提高了大容量锂硫电池的放电性能。

项目成果

A lithiophilic carbon scroll as a Li metal host with low tortuosity design and “Dead Li” self-cleaning capability

• DOI: 10.1039/d1ta02491d
• 发表时间: 2021-05
• 期刊: Journal of Materials Chemistry A
• 影响因子: 11.9
• 作者: Ruijie Zhu;Huijun Yang;L. Fadillah;Zetao Xiong;D. Kowalski;Chunyu Zhu;Sho Kitano;Y. Aoki

Sustainable high-energy aqueous zinc-manganese dioxide batteries enabled by stress-governed metal electrodeposition and fast zinc diffusivity

通过应力控制金属电沉积和快速锌扩散率实现可持续高能水性锌二氧化锰电池

• DOI: 10.1039/d2ee03777g
• 发表时间: 2023
• 期刊: Energy & Environmental Science
• 作者: Yang Huijun;Zhu Ruijie;Yang Yang;Lu Ziyang;Chang Zhi;He Ping;Zhu Chunyu;Kitano Sho;Aoki Yoshitaka;Habazaki Hiroki;Zhou Haoshen
• 通讯作者: Zhou Haoshen

Anode/Cathode Dual‐Purpose Aluminum Current Collectors for Aqueous Zinc‐Ion Batteries

• DOI: 10.1002/adfm.202211274
• 发表时间: 2022-12
• 期刊: Advanced Functional Materials
• 影响因子: 19
• 作者: Ruijie Zhu;Zetao Xiong;Han Yang;Ning Wang;Sho Kitano;Chunyu Zhu;Y. Aoki;H. Habazaki

A low-cost and non-corrosive electropolishing strategy for long-life zinc metal anode in rechargeable aqueous battery

• DOI: 10.1016/j.ensm.2022.01.016
• 发表时间: 2022-01
• 期刊: Energy Storage Materials
• 影响因子: 20.4
• 作者: Ruijie Zhu;Zetao Xiong;Huijun Yang;T. Huang;Seongwoon Jeong;D. Kowalski;Sho Kitano;Y. Aoki;H. Habazaki;Chunyu Zhu

Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper

• DOI: 10.1021/acssuschemeng.2c06396
• 发表时间: 2023-02
• 期刊: ACS Sustainable Chemistry & Engineering
• 作者: Pan Guo;Nan Sheng;Ruijie Zhu;Chun Jiang Zhu;Zhonghao Rao