Transition metal sulfide, as a highly anticipated anode material for high performance lithium-ion batteries (LIBs). Ingenious structural design and reasonable surface modification are used to inhibit the volume expansion of transition metal sulfide during cycling and improve its specific capacity. In this work, a spindle-like Fe₇S₈/C@rGO composite was synthesized by two-step hydrothermal method. The prepared anode material shows superior electrochemical properties and extraordinary electrical conductivity. Which delivering a considerable specific capacity of 1465.1 mAh g^-1 at 0.1A g^-1 after 150 cycles and an impressively long cycle life with a capacity of 689.4 mAh g^-1 at 1 A g^-1 after 100 cycles. These satisfactory performances are attributed to the special nanostructure and the addition of rGO. In addition, the pseudocapacitive behavior effectively increases the extra reversible capacity of Fe₇S₈/C@rGO. This practical synthesis strategy provides a novel way to pursue extraordinary performance anode materials for lithium-ion batteries.

过渡金属硫化物，作为备受期待的高性能锂离子电池 (LIB) 负极材料。通过巧妙的结构设计和合理的表面改性，抑制过渡金属硫化物在循环过程中的体积膨胀，提高其比容量。在这项工作中，通过两步水热法合成了纺锤状的 Fe ₇ S _{8 /C@rGO 复合材料。}制备的负极材料显示出优异的电化学性能和非凡的导电性。在 150 次循环后在 0.1A g ^-1下提供 1465.1 mAh g ^-1的相当大的比容量，在 1 A g ^{-1下的容量为 689.4 mAh g -1}具有令人印象深刻的长循环寿命100 次循环后。这些令人满意的性能归功于特殊的纳米结构和rGO的添加。此外，赝电容行为有效地增加了Fe ₇ S ₈ /C@rGO的额外可逆容量。这种实用的合成策略为追求卓越性能的锂离子电池负极材料提供了一种新方法。