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

Abstract

Attracted by high energy density and power density, metal‐sulfides anodes have promising application prospects in fast charging batteries. However, they still suffer from low electrical conductivity and sluggish electrochemical kinetics, resulting in poor fast charging capacity. Herein, spindle‐like antimony sulfide (Sb2S3) is rationally tailored with favorable (hk1) crystal orientation and rich S‐vacancies using a simple hydrothermal method, which improve electric conductivity significantly. Triggered by S‐vacancies lattice defects, SbOC interfacial bonds and S‐doped carbon layer are built successfully. Under their multiple‐controlling synergistic effects, electrochemical kinetics and reaction reversibility are promoted effectively. As expected, Sb2S3/HTAB@C show high average initial coulombic efficiency of 86.12%, and deliver 624.5 and 428.4 mAh g−1 after cycling 100 cycles at 10.0 and 30.0 A g−1 respectively in Li‐ion batteries (LIBs). Electrochemical kinetic analysis and theoretical calculations indicate that superior ultrafast charging capacity originates from quickened interfacial electron/ions transferring and alleviates electrochemical polarization. Ex situ technologies powerfully prove good stability of (hk1) orientation, SbOC bonds and S‐doped carbon layer. Notably, full LIBs of SS/H@C versus LiFePO4@C display 500.9 and 398.3 mAh g−1 at 5.0 and 10.0 A g−1, respectively. This study is anticipated to open avenue to develop advanced metal‐sulfides anodes for fast charging batteries.

Three-dimensional biotemplate-loaded nickel sulfide vacancies engineered to promote the absorption of electromagnetic waves

“…50,51 The ε ′ and ε ′′ values of the last two samples undergo a huge enhancement with respect to Ni(OH) 2 @De, suggesting that sulfide increases the dielectric properties of the samples in the form of phase components, vacancies, and defects. 52 The presence of abundant defects and a large number of interfaces after sulfurization was demonstrated by XRD, EPR, and SEM, leading to significant polarization, 53 thus synergistically contributing to the dielectric attenuation performance. 54 According to the electronic free-electron theory, high conductivity leads to high ε values, which in turn increases the dielectric loss and leads to improved performance, which is in agreement with the later conclusions.…”

“…By adjusting the thickness, the purpose of realizing the absorption in different bands can be achieved, which has a strong practical application, and further illustrates that the performance of the samples is greatly improved after sulfurization of the samples due to the incorporation of vacancy engineering. 52 To further improve the performance of the sample, we etched the sample and surprisingly, the RL min is −93.53 dB and the EAB is 7.79 GHz at Ni x S y @De-etched with a thickness of only 1.16 mm. Its excellent broadband absorption can reach 7.79 GHz at an ultra-thin thickness of 1.16 mm (10.21–18.0 GHz).…”

Tailoring natural anthracite carbon materials towards considerable electrochemical properties with exploration of ester/ether-based electrolyte

“…27,28 But, considering previous reports about ion-storage behavior, Na-ion storage behavior should be further explored in different storage regions with the utilization of diverse electrolytes. [29][30][31] In this work, natural anthracite was utilized as a precursor to prepare a series of carbon materials (O, S-doped carbon) through control over carbonization temperature, displaying thin graphitized microcrystals and larger interlayer distances. Aer the optimized process, the resulting samples displayed considerable energy-storage abilities.…”

“…27,28 But, considering previous reports about ion-storage behavior, Na-ion storage behavior should be further explored in different storage regions with the utilization of diverse electrolytes. 29–31…”

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 .…”