Scalable preparation of porous nano‑silicon/TiN@carbon anode for lithium-ion batteries

A novel porous nano‑silicon/TiN@carbon anode with superior cycling stability and long-term durability has been proposed by the facile strategy of mechanical ball-milling/low-temperature calcination . This porous architecture can contain enough void spaces to stabilize the severe volume expansion, and provide sufficient migration channels for lithium ions . Meanwhile, the TiN sheets can efficiently facilitate the charge transfer and mitigate the massive silicon swelling. This anode develops the enhanced lithium storage capability with 1614.6 mAh g −1 at 100 mA g −1 for 110 cycles, and achieves better long-cycling life with 852.8 mAh g −1 at 500 mA g −1 after 800 cycles. Furthermore, the anode can also grab a good wide-temperature performance from 5 to 50 °C.