Micrometer‐Sized Porous Fe2N/C Bulk for High‐Areal‐Capacity and Stable Lithium Storage

摘要: High-capacity anodes of lithium-ion batteries generally suffer from poor electrical conductivity, large volume variation, and low tap density caused by prepared nanostructures, which make it an obstacle to achieve both high-areal capacity stable cycling performance for practical applications. Herein, micrometer-sized porous Fe2 N/C bulk is tackle the aforementioned issues, thus realize at high mass loading. The structure in beneficial alleviate volumetric change. In addition, N-doped carbon conducting networks with conductivity provide a fast charge transfer pathway. Meanwhile, exhibits higher than that commercial graphite powder (1.03 g cm-3 ), facilitates preparation thinner electrode loadings. As result, above 4.2 mA h cm-2 0.45 obtained loading 7.0 mg LIBs, still maintains 2.59 after 200 cycles retention 98.8% 0.89 .