Nanorod-Structured Bark-Derived Activated Carbon/Nickel-Cobalt Layered Double Hydroxide Composites for High-Performance Asymmetric Supercapacitors

Sustainable energy storage critically demands high-performance electrode materials from renewable resources.While biomass-derived porous carbons offer an eco-friendly alternative, their limited capacitance constrains device performance.Conversely, transition metal layered double hydroxides (LDHs) exhibit exceptional theoretical capacitance but are plagued by poor conductivity, aggregation, and cycling instability.These complementary limitations call for rationally designed hierarchical