Design of a micro-pattern structure for a three dimensionally macroporous Sn-Ni alloy anode with high areal capacity

摘要

A highly patterned porous Sn-Ni anode with various patterns was investigated as an anode for a lithium battery and showed much higher areal capacity than a conventional graphite electrode. This result proves the importance of a structured electrode for development of an electrode with higher performance. Currently, graphite (LiC6: 372 mA h g~(-1)) is used as an anode material in lithium secondary batteries. However, higher-capacity alternatives are being actively pursued for anode materials. Among the many possible alternatives,1'2 a large number of studies have focused on nanostructured Sn-based composites because Sn has a high theoretical capacity (Li4.4Sn: 990 mA h g~(-1)).3-8