| Citation: | LI S R，XIONG G Y，XING Y L，et al. Lithium metal electrode based on Au-modified CuO/CF nanoarray[J]. Journal of Beijing University of Aeronautics and Astronautics，2025，51（8）：2748-2756 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0958
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With the growing strategic position of near-space vehicles, the demand for energy storage batteries with high power, high specific energy, and long cycle life has also increased. Lithium metal battery with ultra-high theoretical specific energy is a promising candidate for the next-generation energy storage system of near-space vehicles. Lithium metal exhibits extremely low reduction potential and high theoretical capacity, but its application is limited by issues associated with dendrite growth. In this paper, based on oxidation etching and ion exchange mechanism, a three-dimensional (3D) Au-CuO nanowire array current collector on copper foam (CF) (Au-CuO/CF nanoarray 3D current collector) was successfully prepared via the preparation of CuO nanowire array on CF and the introduction of Au as lithophilic sites. This current collector was then applied as a lithium metal battery anode. Compared to the CuO/CF nanoarray 3D current collector, the Au-CuO/CF nanoarray 3D current collector demonstrated significantly improved Coulombic efficiency, cycle life, and cycling stability. When paired with a lithium iron phosphate (LFP) cathode, the full cell achieved a capacity retention of 97.7% after 700 cycles. The Au-CuO/CF nanoarray 3D current collector features simple preparation and excellent electrochemical performance, with the full cell demonstrating outstanding cycling stability and exceptional capacity retention, showing great potential as a next-generation high-energy-density lithium metal battery anode current collector.
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