2024
DOI: 10.1002/smll.202310518
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A Defective Disc‐Like Cu1.96S Anode Material with the Efficient Cu Vacancies for High‐Performance Sodium‐Ion Storage

Zhihao Wang,
Yongyi Lu,
Guangdi Zhang
et al.

Abstract: Due to their significant capacity and reliable reversibility, transition metal sulphides (TMSs) have received attention as potential anode materials for sodium‐ion batteries (SIBs). Nonetheless, a prevalent challenge with TMSs lies in their significant volume expansion and sluggish kinetics, impeding their capacity for rapid and enduring Na+ storage. Herein, a Cu1.96S@NC nanodisc material enriched with copper vacancies is synthesised via a hydrothermal and annealing procedure. Density functional theory (DFT) c… Show more

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Cited by 5 publications
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“…Fortunately, transition-metal chalcogenides are appearing as a type of phase change material for SIBs due to their impressive advantages, including compositional diversity, high electronic conductivity, and chemical stability, thereby being a sustainable electrode for future commercial exploitation. Among them, molybdenum disulfide (MoS 2 ), an essential representative of layered metal sulfides with appropriate interlayer spacing (≈0.62 nm), is wildly considered as an ideal candidate for the insertion and extraction of Na + . , Regrettably, similar to other TMDs, MoS 2 anodes also suffer from inferior rate capability and short lifespan owing to their inherent semiconducting properties, irreversible dissolution and shuttling of polysulfide intermediates, and huge volume expansion upon cycling . A large number of constructive strategies have been put forward to address the above issues.…”
Section: Introductionmentioning
confidence: 99%
“…Fortunately, transition-metal chalcogenides are appearing as a type of phase change material for SIBs due to their impressive advantages, including compositional diversity, high electronic conductivity, and chemical stability, thereby being a sustainable electrode for future commercial exploitation. Among them, molybdenum disulfide (MoS 2 ), an essential representative of layered metal sulfides with appropriate interlayer spacing (≈0.62 nm), is wildly considered as an ideal candidate for the insertion and extraction of Na + . , Regrettably, similar to other TMDs, MoS 2 anodes also suffer from inferior rate capability and short lifespan owing to their inherent semiconducting properties, irreversible dissolution and shuttling of polysulfide intermediates, and huge volume expansion upon cycling . A large number of constructive strategies have been put forward to address the above issues.…”
Section: Introductionmentioning
confidence: 99%