Carbon-coated Sb 2 Se 3 composite as anode material for sodium ion batteries

Li, Wei; Zhou, Min; Li, Haomiao; Wang, Kangli; Cheng, Shijie; Jiang, Kai

doi:10.1016/j.elecom.2015.08.014

Cited by 70 publications

(26 citation statements)

References 21 publications

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“…In the first cathodic scan, three reduction peaks at about 0.98, 0.76 and 0.23 V should be resulted from the formation of SEI layer, the decomposition of Sb 2 Se 3 to form Sb/Na 2 Se and the generation of Na-Sb alloy phase, respectively as the previous report [27]. Furthermore, the oxidation peaks at around 0.88, 1.45 and 1.88 V can be ascribed to the dealloying and conversion reactions of Sb 2 Se 3 .…”

Section: Preferred Position Of Figsupporting

confidence: 66%

Mesh-structured N-doped graphene@Sb2Se3 hybrids as an anode for large capacity sodium-ion batteries

Zhao

2017

Journal of Colloid and Interface Science

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A mesh-structured N-doped graphene@SbSe (NGS) hybrid was one-pot prepared to realize N-doping, nanostructuring and hybridization for a sodium-ion battery anode to deliver much larger reversible specific capacity, faster interfacial electron transfer rate, better ionic and electronic transport, higher rate performance and longer cycle life stability in comparison to the plain SbSe one. The better performance is ascribed to the unique intertwined porous mash-like structure associated with a strong synergistic effect of N-doped graphene for dramatic improvement of electronic and ionic conductivity by the unique porous structure, the specific capacity of graphene from N doping and fast interfacial electron transfer rate by N-doping induced surface effect and the structure-shortening insertion/desertion pathway of Na. The detail electrochemical process on the NGS electrode is proposed and analyzed in terms of the experimental results.

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Section: Preferred Position Of Figsupporting

confidence: 66%

Mesh-structured N-doped graphene@Sb2Se3 hybrids as an anode for large capacity sodium-ion batteries

Zhao

2017

Journal of Colloid and Interface Science

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“…With respect to the anode side, various types of hard carbon have been revealed to deliver considerable reversible capacity, but their low potential and large polarization raise safety issues for the practical battery applications 8 9 10 . Metallic anodes, such as Sn and Sb-based materials, have attracted significant attention due to their high Na-storage capacity 11 12 13 . However, the unavoidable volume change of these materials during the repeated sodiation/desodiation hinders their further applications.…”

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confidence: 99%

Glycol Derived Carbon- TiO2 as Low Cost and High Performance Anode Material for Sodium-Ion Batteries

Tao

Zhou

Wang

et al. 2017

Sci Rep

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Carbon coated TiO2 (TiO2@C) is fabricated by a convenient and green one-pot solvothermal method, in which ethylene glycol serve as both the reaction medium and carbon source without the addition of any other carbon additives. During the solvothermal process, ethylene glycol polymerize and coordinate with Ti4+ to form the polymeric ligand precursor, then the polymer brushes carbonize and convert to homogeneous carbon layer firmly anchored on the TiO2 nanoparticles (~1 nm thickness). The polymerization and carbonization process of the ethylene glycol is confirmed by FT-IR, Raman, TG and TEM characterizations. Benefiting from the well-dispersed nanoparticles and uniform carbon coating, the as-prepared TiO2@C demonstrate a high reversible capacity of 317 mAh g−1 (94.6% of theoretical value), remarkable rate capability of 125 mAh g−1 at 3.2 A g−1 and superior cycling stability over 500 cycles, possibly being one of the highest capacities reported for TiO2.

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“…In the first discharge cycle, a weak peak at 0.85 V and a strong peak at 0.56 V were clearly observed, which can be attributed to the decomposition of Na x CGSe (Cu and Ge are generated) and formation of Na y Se, respectively [ 21 , 26 ]. These peaks' shift to about 0.9 (1.1) and 0.4 V in the subsequent cycles is known to represent the activation of electrode materials during the first cycle [ 27 ]. Meanwhile, the intensities of peaks of the following two cycles are reduced, indicating the formation of solid electrolyte interface (SEI) film and other some irreversible reactions in the first cycle [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

A Novel Open-Framework Cu-Ge-Based Chalcogenide Anode Material for Sodium-Ion Battery

Sun

Shang

2017

Scanning

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Open-framework chalcogenides are potential electrode materials for sodium-ion batteries (SIBs) due to their architectures with fast-ion conductivity. Herein, we report on the successful synthesis of open-framework Cu-Ge-based chalcogenides [Cu8Ge6Se19](C5H12N)6 (CGSe) and the research of their energy storage application as SIB anodes for the first time. As a result, the CGSe anode exhibited good electrochemical performances such as high reversible capacity (463.3 mAh g−1), excellent rate performance, and considerable cycling stability. Our exploration not only develops a promising electrode material for SIBs, but also extends the application of open-framework chalcogenides.

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Carbon-coated Sb 2 Se 3 composite as anode material for sodium ion batteries

Cited by 70 publications

References 21 publications

Mesh-structured N-doped graphene@Sb2Se3 hybrids as an anode for large capacity sodium-ion batteries

Mesh-structured N-doped graphene@Sb2Se3 hybrids as an anode for large capacity sodium-ion batteries

Glycol Derived Carbon- TiO2 as Low Cost and High Performance Anode Material for Sodium-Ion Batteries

A Novel Open-Framework Cu-Ge-Based Chalcogenide Anode Material for Sodium-Ion Battery

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