Yang Biao, Shi Yuxin, Song Gongjing, Pei Chengang, Yan Yan, Chen Zhidong, Pang Huan
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225000, P.R. China.
School of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu, 213164, P.R. China.
Angew Chem Int Ed Engl. 2025 Jul;64(27):e202425391. doi: 10.1002/anie.202425391. Epub 2025 May 8.
A magical heterostructures of M-PBAs (M = Co, Cu, and Zn) encapsulated by V-PBA have been successfully obtained by a facile one-pot coprecipitation method based on the difference in the binding energies of between these metal ions and ligands, and the nucleation rates of different M-PBAs. Hence, due to the multiple redox pairs, open frameworks, ordered channels, and synergistic effect of two components, the obtained VM-PBAs have been tested as cathodes in aqueous zinc-ion batteries (AZIBs). To further inhibiting the hydrolysis of vanadium ions and the collapse of PBAs structures, a series of glycerol-water hybrid electrolyte with different content of glycerol were designed. Benefiting from the multiple hydroxyl groups, appropriate viscosity and accurate proportion of glycerol, the as-assembled AZIBs with VMn-PBAs cathode can exhibit excellent cycling performance (∼73% capacity retain of stable capacity) after 1000 cycles. This work provides a sight of preparation of PBAs nanomaterials and a strategy of improve the cycling stability and rate capacity of PBAs-based cathodes in AZIBs.
基于这些金属离子与配体之间结合能的差异以及不同金属有机硼酸盐（M-PBAs）的成核速率，通过简便的一锅共沉淀法成功制备了一种由钒基金属有机硼酸盐（V-PBA）包裹的神奇的M-PBAs（M = Co、Cu和Zn）异质结构。因此，由于存在多个氧化还原对、开放框架、有序通道以及两种组分的协同效应，所制备的VM-PBAs已被测试用作水系锌离子电池（AZIBs）的阴极。为了进一步抑制钒离子的水解和金属有机硼酸盐结构的坍塌，设计了一系列具有不同甘油含量的甘油-水混合电解质。受益于甘油的多个羟基、合适的粘度和精确的比例，组装后的具有VMn-PBAs阴极的AZIBs在1000次循环后可表现出优异的循环性能（稳定容量保留约73%）。这项工作为金属有机硼酸盐纳米材料的制备提供了思路，并为提高AZIBs中基于金属有机硼酸盐的阴极的循环稳定性和倍率性能提供了策略。
