Song Yang, Ruan Pengchao, Mao Caiwang, Chang Yuxin, Wang Ling, Dai Lei, Zhou Peng, Lu Bingan, Zhou Jiang, He Zhangxing
School of Chemical Engineering, North China University of Science and Technology, Tangshan, 063009, People's Republic of China.
School of Materials Science and Engineering, Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials, Central South University, Changsha, 410083, People's Republic of China.
Nanomicro Lett. 2022 Nov 9;14(1):218. doi: 10.1007/s40820-022-00960-z.
Aqueous zinc-ion batteries (AZIBs) are one of the promising energy storage systems, which consist of electrode materials, electrolyte, and separator. The first two have been significantly received ample development, while the prominent role of the separators in manipulating the stability of the electrode has not attracted sufficient attention. In this work, a separator (UiO-66-GF) modified by Zr-based metal organic framework for robust AZIBs is proposed. UiO-66-GF effectively enhances the transport ability of charge carriers and demonstrates preferential orientation of (002) crystal plane, which is favorable for corrosion resistance and dendrite-free zinc deposition. Consequently, Zn|UiO-66-GF-2.2|Zn cells exhibit highly reversible plating/stripping behavior with long cycle life over 1650 h at 2.0 mA cm, and Zn|UiO-66-GF-2.2|MnO cells show excellent long-term stability with capacity retention of 85% after 1000 cycles. The reasonable design and application of multifunctional metal organic frameworks modified separators provide useful guidance for constructing durable AZIBs.
水系锌离子电池（AZIBs）是一种很有前景的储能系统，由电极材料、电解质和隔膜组成。前两者已得到显著充分的发展，而隔膜在控制电极稳定性方面的重要作用尚未引起足够的关注。在这项工作中，提出了一种由锆基金属有机框架修饰的用于稳定水系锌离子电池的隔膜（UiO-66-GF）。UiO-66-GF有效地提高了电荷载流子的传输能力，并表现出（002）晶面的择优取向，这有利于耐腐蚀和无枝晶锌沉积。因此，Zn|UiO-66-GF-2.2|Zn电池在2.0 mA cm下表现出高度可逆的电镀/剥离行为，循环寿命超过1650小时，并且Zn|UiO-66-GF-2.2|MnO电池表现出优异的长期稳定性，在1000次循环后容量保持率为85%。多功能金属有机框架修饰隔膜的合理设计和应用为构建耐用的水系锌离子电池提供了有益的指导。
