Data_Sheet_1_Transition Bimetal Based MOF Nanosheets for Robust Aqueous Zn Battery.DOCX

High-performance, good stability, low-cost, and environmentally friendly batteries are important for multifunctional electronics and electric vehicles. Compared with the high-energy density lithium-ion batteries, aqueous rechargeable battery has been extensively researched due to high safety, low cost and much better rate performance. Here, we report a one-step approach to fabricate porous Ni-Cu metal–organic framework (MOF) nanosheet arrays structures for stable energy storage with a high-energy (71.2 mWh cm−3) and high-stability (capacity retention of ≈91% after 2,500 cycles) performance. Furthermore, we synthesized various porous homogeneous Ni-Co, Ni-Zn, Ni-Fe and Ni-Mn bimetal MOF structures with high surface area and conductivity utilizing this rational design. This work provides a simple efficient strategy for constructing porous homogeneous bimetal MOF nanosheet arrays with high energy and stability performance, holding a great potential for future portable electronics.

高性能、稳定性优良、成本效益高且环保的电池对于多功能电子设备和电动汽车至关重要。相较于高能量密度锂离子电池，由于具备高安全性、低成本以及更优的倍率性能，水性可充电电池已被广泛研究。在本研究中，我们提出了一种一步法构建多孔Ni-Cu金属-有机框架（MOF）纳米片阵列结构，以实现稳定储能，并展现出高能量（71.2 mWh cm−3）和高稳定性（经过2,500次循环后容量保持率约为91%）的性能。此外，我们还利用这种理性设计合成了多种具有高比表面积和导电性的多孔均质Ni-Co、Ni-Zn、Ni-Fe和Ni-Mn双金属MOF结构。本研究提供了一种构建高能量和稳定性多孔均质双金属MOF纳米片阵列的简单高效策略，为未来便携式电子设备的发展潜力巨大。