Cross-linked hierarchical arrays of Ni 2 P nanoflakes prepared via directional phosphorization and their applications for advanced alkaline batteries

摘要: Abstract In this work, we report a facile directional phosphorization method for construction of hierarchical cross-linked Ni2P arrays, which show multileveled porous architecture. The basic building blocks are numerous nanoflakes with thicknesses 15–20 nm, self-assembled each other forming the primary mushroom-like structure 1–3 μm. Impressively, 3D channels run through whole arrays. secondary consist interconnected nanoparticles 10–30 nm and lots nanopores 10–50 nm. electrochemical performance as-prepared arrays is investigated as cathode alkaline batteries demonstrated higher capacities (127 mAhh g−1 at 2.5 A g−1) better high-rate cycling stability (123 mAhh 2.5 A g−1 after 9000 cycles) than preformed Ni(OH)2 counterparts (80 mAhh 66 mAhh cycles). enhanced mainly due to improved surface area & porosity well reinforced electrical conductivity.