TY  - JOUR
AU  - Yan, Dong
AU  - Xiao, Shuhao
AU  - Li, Xinyan
AU  - Jiang, Jinxia
AU  - He, Qiyuan
AU  - Li, Hanchao
AU  - Qin, Jiaqian
AU  - Wu, Rui
AU  - Niu, Xiaobin
AU  - Chen, Jun Song
PY  - 2023
TI  - NiS2/FeS Heterostructured Nanoflowers for High-Performance Sodium Storage
JO  - Energy Material Advances
SN  - 2097-1133
SP  - 0012
VL  - 4
AB  - Transition metal sulfides demonstrate attractive potential for sodium storage owing to their high theoretical specific capacity and high reserve. However, the low conductivity and volume expansion deteriorate their high-rate performance and cycling stability. In this work, we construct NiS2/FeS heterostructure by growing Ni-based layered double hydroxide nanosheets on Fe-based Prussian Blue nanocrystals followed by gaseous sulfurization, giving rise to flower-like NiS2/FeS nanoparticles. The as-prepared nanocomposite exhibits good rate performance of 156 mAh g−1 at 50 A g−1 and long cycle life of 606 mAh g−1 at 5 A g−1 after 1,000 cycles, which are superior to the heterostructure-free counterpart of NiS2 and FeS. Density functional theory calculation further verifies that the enhanced electrochemical performance of NiS2/FeS is due to the existence of interface derived from the heterostructure.
UR  - https://doi.org/10.34133/energymatadv.0012
DO  - 10.34133/energymatadv.0012