School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, China.
MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China.
Molecules. 2023 Jan 21;28(3):1098. doi: 10.3390/molecules28031098.
Transition metal organic framework materials and their selenides are considered to be one of the most promising cathode materials for nickel-zinc (denoted as Ni-Zn) batteries due to their low cost, environmental friendliness, and controllable microstructure. Yet, their low capacity and poor cycling performance severely restricts their further development. Herein, we developed a simple one-pot hydrothermal process to directly synthesize NiSe (denotes as NiSe-X based on the molar amount of SeO added) stacked layered sheets. Benefiting from the peculiar architectures, the fabricated NiSe-1//Zn battery based on NiSe and the Zn plate exhibits a high specific capacity of 231.6 mAh g at 1 A g, and excellent rate performance (162.8 mAh g at 10 A g). In addition, the NiSe//Zn battery also presents a satisfactory cycle life at the high current density of 8 A g (almost no decay compared to the initial specific capacity after 1000 cycles). Additionally, the battery device also exhibits a satisfactory energy density of 343.2 Wh kg and a peak power density of 11.7 kW kg. This work provides a simple attempt to design a high-performance layered cathode material for aqueous Ni-Zn batteries.
过渡金属有机骨架材料及其硒化物被认为是最有前途的镍锌（表示为 Ni-Zn）电池的阴极材料之一，因为它们具有低成本、环保和可控的微观结构。然而，它们的低容量和较差的循环性能严重限制了它们的进一步发展。在此，我们开发了一种简单的一步水热法直接合成堆叠层片状 NiSe（基于添加的 SeO 的摩尔量表示为 NiSe-X）。得益于特殊的结构，基于 NiSe 和 Zn 板制备的 NiSe-1//Zn 电池表现出 231.6 mAh g 的高比容量，在 1 A g 时，具有优异的倍率性能（在 10 A g 时为 162.8 mAh g）。此外，NiSe//Zn 电池在高电流密度 8 A g 时也表现出令人满意的循环寿命（与初始比容量相比，经过 1000 次循环后几乎没有衰减）。此外，电池装置还表现出令人满意的能量密度 343.2 Wh kg 和峰值功率密度 11.7 kW kg。这项工作为设计高性能的水性 Ni-Zn 电池层状阴极材料提供了一个简单的尝试。
