Engineering hierarchical Sb₂S₃/N–C from natural minerals with stable phase-change towards all-climate energy storage

Abstract

Hierarchical Sb2S3 with N-doped carbon is prepared through thermal interfacial reactions from natural stibnite. Lattice regeneration and interfacial engineering resulted in unique porous structure and enhanced electrochemical performance.

Tailoring Rational Crystal Orientation and Tunable Sulfur Vacancy on Metal‐Sulfides toward Advanced Ultrafast Ion‐Storage Capability

“…To better understand the Li + diffusion behaviors within Sb 2 S 3 dynamically, GITT was performed on the as‐prepared samples between 0.01 and 2.5 V, and D Li+ at varying discharge/charge potentials were calculated according to Equation 8 (Figure S14, Supporting Information). [ 10a,36 ] It can be apparently found that SS/H@C shows the largest D Li+ than that of the others during discharge and charge process, particularly discharging from 1.5 to 1.0 V and charging from 2.0 to 2.5 V, which correspond to the conversion reaction of Sb 2 S 3 and Li + and reverse conversion reaction of regenerating Sb 2 S 3 respectively. Owing to the boosted Li + diffusion rate, the ultrafast charging capacity of SS/H@C is remarkably improved by accelerated conversion‐reaction kinetics.…”

Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

“…Three peaks of N in NiS@C-Na 2 SO 4 /NiS@C-NaCl were positioned at 398.37/398.44, 400.37/400.59, and 402.82/402.62 eV, corresponding to pyridinic-N, pyrrolic-N, and graphitic-N, respectively . Benefiting from the existence of pyridinic-N and pyrrolic-N, abundant active sites for Na-ions adsorption was offered, which promoted the energy-storage capacity of the samples above . Differently, the peaks of N in NiS@C-Na 2 CO 3 positioned at 399.22 and 399.84 eV were mainly attributed to pyridinic-N and pyrrolic-N. Based on the high-resolution XPS spectra of N 1s in NiS@C-Na 2 CO 3 , the peak of graphitic-N could be hardly observed.…”

“…49 Benefiting from the existence of pyridinic-N and pyrrolic-N, abundant active sites for Na-ions adsorption was offered, which promoted the energy-storage capacity of the samples above. 2 Differently, the peaks of N in NiS@C-Na 2 CO 3 positioned at 399.22 and 399.84 eV were mainly attributed to pyridinic-N and pyrrolic-N. Based on the high-resolution XPS spectra of N 1s in NiS@C-Na 2 CO 3 , the peak of graphitic-N could be hardly observed. With the assistance of graphitic-N, the conductivity of NiS@C-Na 2 SO 4 /NiS@C-NaCl was effectively promoted, perhaps leading to considerable electrochemical performance.…”

“…Triggered by the rapid development of wearable electronics and electric cars, advanced energy-storage systems have shown wide application prospects. − Among them, a great deal of efforts have been devoted to develop sodium-ion batteries (SIBs) due to their high energy density and resource abundance, while leading to series of exploring activities. − In searching for suitable anode materials for SIBs, nickel-based materials have been investigated by researchers, accompanied with considerable progress. − Benefiting from a high theoretical specific capacity (591.0 2 mAh g –1 ) and great conductivity, NiS has been deemed as an ideal anode material for SIBs . However, the electrochemical applications of NiS were still limited by the huge volume expansion and serious side reactions, resulting in inferior cycling capabilities and rate performance.…”

Mesoporous ZnS-Sb/C Reduced Graphene Oxide Nanostructures as Anode Materials for Sodium-Ion Batteries

“…Recently, metal-based sulfides, metal-based materials, and carbon-based materials have received increasing attention as SIB anode materials. − Among them, the theoretical capacity of metal sulfides (such as ZnS, Sb 2 S 3 , NiS, etc.) are particularly prominent, which have been studied by researchers. − Zhang et al prepared ZnS nanofibers by a template method and obtained an initial reversible capacity of 603 mAh g –1 at 100 mA g –1 .…”