Hollow Tubular Biomass-Derived Carbon Loaded NiS/C for High Performance Lithium Storage

Abstract

Transition metal sulfides have received broad research and application development for lithium-ion batteries owing to their rare physical/chemical characteristics. Unfortunately, the fundamental flaws of volume expansion and poor electrical conductivity have hampered future practical implementation. Herein, a carbonization/activation procedure coupled with a facile solvothermal method and post-annealing strategy were developed to synthesize hollow tubular biomass-derived carbon (HBC) loaded NiS/C composite. The HBC serves a dual functional by providing highly active surface sites for NiS/C particles loading and naturally existing micron-level pores that can accommodate the volume variation. As a consequence, the HBC-NiS/C anode displayed strong lithium-ion storage performances with a high specific capacity (652 mAh g-1 at 0.2 A g-1 over 100 cycles), favorable rate capability, and exceptional structural durability.

A high-performance magnesium/lithium hybrid-ion battery using a hollow multi-layered NiS/Co3S4/carbon cathode and an all-phenyl-complex-based electrolyte

“…There is an obvious plateau near 1.1 V during the discharge process, which may correspond to the conversion to Li x Co 3 S 4 and Ni 3 S 2 , and the plateau near 0.52 V may correspond to those of Li x Co 3 S 4 to Co and Ni 3 S 2 to Ni. 14,25 The charging plateaus at 1.33, 1.58 and 1.9 V are attributed to the conversion of Co to Li x Co 3 S 4 and Co 3 S 4 , and Ni to Ni 3 S 2 and NiS, respectively. The possible reactions are presented as follows:…”

“…There is an obvious plateau near 1.1 V during the discharge process, which may correspond to the conversion to Li x Co 3 S 4 and Ni 3 S 2 , and the plateau near 0.52 V may correspond to those of Li x Co 3 S 4 to Co and Ni 3 S 2 to Ni. 14,25…”