Researchers from China’s Guizhou University, Liupanshui Normal University and Moutai Institute have developed a composite combining needle-shaped Nickel Metal-Organic Framework (Ni-MOF) with graphene (GR), to enhance lithium-ion battery anodes by addressing conductivity and structural stability challenges.
The integration of graphene reportedly boosts conductivity by eight orders of magnitude and improves charge transfer, leading to remarkable electrochemical performance, including higher capacity, better rate capability, and superior cycling stability compared to pristine Ni-MOF.
The needle-shaped Ni-MOF provides a large surface area and porosity, facilitating lithium-ion diffusion and storage, while graphene’s exceptional electrical conductivity and mechanical strength enhance electron transport and structural robustness. This synergy enables the composite to achieve stable discharge capacities up to 368.4 mAh g⁻¹ over 500 cycles at high rates, nearly doubling that of Ni-MOF alone.
Comprehensive characterization techniques (SEM, XRD, FTIR, XPS) and density-functional theory (DFT) calculations confirm strong interaction and efficient charge transfer between Ni-MOF and graphene. The composite’s eco-friendly one-step solvothermal synthesis also supports sustainable battery production.
Beyond lithium-ion batteries, the Ni-MOF/GR composite shows promise for next-generation energy storage systems such as solid-state and lithium-sulfur batteries, aligning with the growing demand for high-performance, long-lasting, and environmentally conscious battery technologies vital for electric vehicles and renewable energy integration.
This advancement highlights graphene’s critical role in overcoming limitations of MOF materials, paving the way for sustainable electrification and a cleaner energy future.