ABSTRACT Exploring advanced hosts enabling homogeneous Li plating/striping is of paramount importance for the practical implementation of lithium metal batteries (LMBs), yet it remains a formidable challenge, particularly at low N/P ratios. Herein, we propose a novel structured host prototype integrating bowl‐shaped carbon (BC) with lithiopholic anti‐perovskite nitrides. Structurally optimized BC, featuring a semi‐open architecture and high porosity, not only provides ample space for Li accommodation but also mitigates volume expansion during cycling. Meanwhile, lithiopholic nitride nanoparticles serve as nucleation sites to induce uniform and dense Li metal deposition. Taking the Ni 3 ZnN/BC host as a representative example, we systematically illustrate its architectural characteristics, electrochemical performance, and the underlying mechanism for regulating uniform Li deposition. The Li@Ni 3 ZnN/BC composite anode, with a limited Li content of 5 mAh cm −2 , achieves stable cycling over 1200 h in symmetric cells. When paired with a high‐mass‐loading NCM622 cathode (18 mg cm −2 ) at a low N/P ratio of 1.54, the full cell delivers a high reversible capacity of 179.8 mAh g −1 at 0.5C and retains 89% of its initial capacity after 100 cycles. This work provides a significant paradigm for the design and construction of 3D hosts tailored for low N/P ratio LMBs with practical applicability.
Cui et al. (Fri,) studied this question.