Few-atomic-layered hollow nanospheres constructed from alternate intercalation of carbon and MoS2 monolayers for sodium and lithium storage

Jing, Laiying; Lian, Gang; Niu, Feier; Yang, Jian; Wang, Qilong; Cui, Deliang; Wong, Ching‐Ping; Liu, Xizheng

doi:10.1016/j.nanoen.2018.06.084

Cited by 105 publications

(57 citation statements)

References 53 publications

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“…Besides, XRD patterns of the CT‐Ti 3 C 2 annealed from 250 to 500 °C without S were also tested (Figure S7, Supporting Information). After annealing the CT‐Ti 3 C 2 at high temperature, the intercalated CTAB will be carbonized to carbon layer between the Ti 3 C 2 layers . Therefore, CT‐Ti 3 C 2 has larger interlayer spacing than that of Ti 3 C 2 at high temperature.…”

Section: Resultsmentioning

confidence: 99%

Atomic Sulfur Covalently Engineered Interlayers of Ti₃C₂ MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Luo

Zheng

Nai

et al. 2019

Adv Funct Materials

250

162

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2D MXenes have been widely applied in the field of electrochemical energy storage owning to their high electrical conductivity and large redox‐active surface area. However, electrodes made from multilayered MXene with small interlayer spacing exhibit sluggish kinetics with low capacity for sodium‐ion storage. Herein, Ti3C2 MXene with expanded and engineered interlayer spacing for excellent storage capability is demonstrated. After cetyltrimethylammonium bromide pretreatment, S atoms are successfully intercalated into the interlayer of Ti3C2 to form a desirable interlayer‐expanded structure via TiS bonding, while pristine Ti3C2 is hardly to be intercalated. When the annealing temperature is 450 °C, the S atoms intercalated Ti3C2 (CT‐S@Ti3C2‐450) electrode delivers the improved Na‐ion capacity of 550 mAh g−1 at 0.1 A g−1 (≈120 mAh g−1 at 15 A g−1, the best MXene‐based Na+‐storage rate performance reported so far), and excellent cycling stability over 5000 cycles at 10 A g−1 by enhanced pseudocapacitance. The enhanced sodium‐ion storage capability has also been verified by theoretical calculations and kinetic analysis. Coupling the CT‐S@Ti3C2‐450 anode with commercial AC cathode, the assembled Na+ capacitor delivers high energy density (263.2 Wh kg−1) under high power density (8240 W kg−1), and outstanding cycling performance.

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Section: Resultsmentioning

confidence: 99%

Atomic Sulfur Covalently Engineered Interlayers of Ti₃C₂ MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Luo

Zheng

Nai

et al. 2019

Adv Funct Materials

250

162

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“…The high‐resolution C 1s spectrum in Figure c shows asymmetrical features, suggesting different bonding states of carbon. The main fitted peak at 284.90 eV corresponds to sp 2 graphitic carbon (C−C/C=C bond) and the two relative weak peaks at 285.60 and 287.30 eV arise from C−N and C−O, respectively ,. Figure d displays the high‐resolution N 1s spectrum and the broad peak at 400 eV which can be deconvoluted into three peaks and the peak at 395.9 eV can be attributed to Mo 3p 3/2 .…”

Section: Resultsmentioning

confidence: 99%

Hierarchical MoS₂@N‐Doped Carbon Hollow Spheres with Enhanced Performance in Sodium Dual‐Ion Batteries

Yang

et al. 2018

ChemElectroChem

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Sodium dual-ion batteries (S-DIBs) are attracting increasing interest in large-scale electrical energy storage, owing to lowcost and abundant sodium resources and the crucial need to develop high-performance anode materials to spur the largescale application of S-DIBs. In this work, hierarchical hollow spheres assembled from interconnected few-layer MoS 2 nanosheets with an N-doped carbon coating (designated as MoS 2 @NC HHSs) are designed and synthesized. An S-DIBs full cell is fabricated with MoS 2 @NC HHSs as the anode, expanded graphite as the cathode, and 1.0 M NaPF 6 in EC/DMC/EMC (1 : 1 : 1, volume ratio) as the electrolyte. The combined effects rendered by the ultrathin MoS 2 subunits, hollow interior, and Ndoped carbon coating not only promote the reaction kinetics and capacitive-controlled Na storage, but also guarantee outstanding mechanical stability during Na + intercalation/deintercalation. The MoS 2 @NC HHSs-based S-DIBs deliver a high reversible capacity of 45 mAhg À 1 at 2 Ag À 1 and exhibit good cycling performance with a stable reversible capacity of 40 mAhg À 1 and high coulombic efficiency beyond 90 % at 1 Ag À 1 for 500 cycles. The MoS 2 @NC HHSs have great potential in high-performance S-DIBs.[a] Dr.

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“…As a promising method, the conductive carbon matrices can construct effective paths for electronics transfer and ions diffusion. The other one is expanding the interlayer, which can increase the reactive sites, inhibit interlayer stacking, and alleviate volume expansion . Notwithstanding, the above strategies optimize the inherent defects of MoS 2 material to some extent.…”

Section: Introductionmentioning

confidence: 99%

Engineering Ultrathin MoS₂ Nanosheets Anchored on N‐Doped Carbon Microspheres with Pseudocapacitive Properties for High‐Performance Lithium‐Ion Capacitors

Jiang

et al. 2019

Small Methods

103

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Lithium‐ion capacitors (LICs) are emerging as one of the most advanced energy storage devices by combining the virtues of both supercapacitor and lithium‐ion battery. The key point of constructing high‐performance LICs is to balance the electrochemical kinetics and capacity mismatch between battery‐type anode and capacitive‐type cathode materials. Herein, a strategy is presented for simultaneous manipulation of a MoS2/N‐doped carbon microspheres anode and hierarchical porous carbon cathode by using polyimide precursor. Owing to the fast lithium diffusion rate, high pseudocapacitive behavior, and expanding the interlayer of the MoS2 composite network architecture, the material can achieve excellent rate capacity and cyclic stability. Hierarchical porous carbon has an ultrahigh specific surface area and superior capacitive behavior. A high‐performance LIC is successfully constructed by using the superior anode and cathode materials. The device can deliver a maximum energy density of 120 Wh kg−1 and keep the capacity retention of 85.5% after 4000 cycles, revealing the competition in advanced energy storage devices. Accordingly, the simultaneous manipulation of metal sulfide and hierarchical porous carbon by the same precursor can be used toward fabricating other ideal electrode structures for energy storage.

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Few-atomic-layered hollow nanospheres constructed from alternate intercalation of carbon and MoS2 monolayers for sodium and lithium storage

Cited by 105 publications

References 53 publications

Atomic Sulfur Covalently Engineered Interlayers of Ti₃C₂ MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Atomic Sulfur Covalently Engineered Interlayers of Ti₃C₂ MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Hierarchical MoS₂@N‐Doped Carbon Hollow Spheres with Enhanced Performance in Sodium Dual‐Ion Batteries

Engineering Ultrathin MoS₂ Nanosheets Anchored on N‐Doped Carbon Microspheres with Pseudocapacitive Properties for High‐Performance Lithium‐Ion Capacitors

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Few-atomic-layered hollow nanospheres constructed from alternate intercalation of carbon and MoS2 monolayers for sodium and lithium storage

Cited by 105 publications

References 53 publications

Atomic Sulfur Covalently Engineered Interlayers of Ti3C2 MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Atomic Sulfur Covalently Engineered Interlayers of Ti3C2 MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Hierarchical MoS2@N‐Doped Carbon Hollow Spheres with Enhanced Performance in Sodium Dual‐Ion Batteries

Engineering Ultrathin MoS2 Nanosheets Anchored on N‐Doped Carbon Microspheres with Pseudocapacitive Properties for High‐Performance Lithium‐Ion Capacitors

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Atomic Sulfur Covalently Engineered Interlayers of Ti₃C₂ MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Atomic Sulfur Covalently Engineered Interlayers of Ti₃C₂ MXene for Ultra‐Fast Sodium‐Ion Storage by Enhanced Pseudocapacitance

Hierarchical MoS₂@N‐Doped Carbon Hollow Spheres with Enhanced Performance in Sodium Dual‐Ion Batteries

Engineering Ultrathin MoS₂ Nanosheets Anchored on N‐Doped Carbon Microspheres with Pseudocapacitive Properties for High‐Performance Lithium‐Ion Capacitors