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.

使用具有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Li金属难以如预期那样沉积到竖直通道中，在其位置处，Li金属表现出与我们预期不同的沉积行为。当通道的直径较大（大于20 μm）时，锂金属通常积聚在管壁开口附近。相反，当直径小（小于5 μm）时，锂金属仅沉积在集电器的上表面上。即使在将促进锂金属（例如银）的欠电位沉积（UPD）或不规则成核的材料结合到金属框架中之后，锂金属也将在通道入口附近聚集，从而产生无支撑的锂层。这是因为最初沉积在上表面上的锂金属充当“核”，从而促进主要在电极表面上的后续沉积。所得的锂金属镀层阻碍离子传输到通道中，导致沉积主要发生在3D结构的浅区域中。此外，我们发现使用此类材料可以很好地改善锂硫电池中硫阴极的性能。多孔金属具有优异的催化阴极反应能力，其多级多孔结构有效地提高了高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