Lithium (Li) metal is the most potential anode material for the next-generation high-energy rechargeable batteries. However, intrinsic surface unevenness and ‘hostless’ nature of Li metal induces infinite volume effect and uncontrollable dendrite growth. Herein, we design the in-situ grown lithiophilic Ni₂P nanoarrays inside nickel foam (PNF). Uniform Ni₂P nanoarrays coating presents a very low nucleation overpotential, which induces the homogeneous Li deposition in the entire spaces of three-dimensional (3D) metal framework. Specifically, the lithiophilic Ni₂P nanoarrays possess characteristics of electrical conductivity and structural stability, which have almost no expansion and damage during repeating Li plating/stripping. Therefore, they chronically inhibit the growth of Li dendrites. This results in an outstanding Coulombic efficiency (CE) of 98% at 3 mA cm⁻² and an ultralong cycling life over 2000 cycles with a low overpotential. Consequently, the PNF-Li||LiFePO₄ battery maintains a capacity retention of 95.3% with a stable CE of 99.9% over 500 cycles at 2C.

锂（Li）金属是下一代高能可充电电池最有潜力的负极材料。但是，锂金属的固有表面不平整和“无主体”性质会引起无限的体积效应和不可控的枝晶生长。在本文中，我们设计了在镍泡沫（PNF）内原位生长的亲锂Ni ₂ P纳米阵列。均匀的Ni ₂ P纳米阵列涂层呈现出非常低的成核超电势，从而在三维（3D）金属框架的整个空间中诱导均匀的Li沉积。具体地说，亲脂性Ni ₂P纳米阵列具有导电性和结构稳定性的特性，在重复进行Li电镀/剥离过程中几乎没有膨胀和损坏。因此，它们长期抑制Li树突的生长。这导致在3 mA cm ^-2时具有98％的出色库仑效率（CE），并且在2000次循环中具有超长的循环寿命，且超低电势。因此，PNF-Li || LiFePO ₄电池在2C的500个循环中保持95.3％的容量保持率和99.9％的稳定CE。