Graphene supported ultrafine tin oxide nanoparticles enable conversion reaction dominated mechanism for sodium-ion batteries

Meng, Jingke; Wang, Weiwen; Wang, Qin‐Chao; Cao, Minghui; Fu, Zheng‐Wen; Wu, Xiaojing; Zhou, Yong‐Ning

doi:10.1016/j.electacta.2019.02.072

Cited by 35 publications

(23 citation statements)

References 31 publications

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“…Additionally, the side reaction of oxygen containing functional groups in RGO with Na + causes degradation in the capacity as well. [42,43] Less oxygen containing functional groups in SnO 2 @Sn/NGA, can improve the reversible specific capacity, as well as the stable cyclic performance. [14] Figure 5a compares the rate performances of SnO 2 @Sn/ NGA, SnO 2 /NGA and SnO 2 /GA.…”

Section: Resultsmentioning

confidence: 99%

“…The XRD patterns reveal emergence of metallic Sn for the SnO 2 /NGA electrode after cycling, indicating electrochemical irreversibility, while the reversible SnO 2 @Sn/NGA electrode preserves its XRD pattern well (Figure S6). Additionally, the side reaction of oxygen containing functional groups in RGO with Na + causes degradation in the capacity as well . Less oxygen containing functional groups in SnO 2 @Sn/NGA, can improve the reversible specific capacity, as well as the stable cyclic performance …”

Section: Resultsmentioning

confidence: 99%

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Plasma‐Enabled Ternary SnO₂@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Wang

Liu

et al. 2020

ChemElectroChem

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SnO2‐based sodium‐ion batteries usually suffer from rapid capacity fading during the sodiation/desodiation caused by aggregation and cracking of Sn and irreversible formation of Na2O. In this respect, we design a ternary SnO2@Sn core‐shell structure decorated on a nitrogen‐doped graphene aerogel (SnO2@Sn/NGA), which is fabricated by using a microwave plasma‐based process. The converted Na2O can prevent agglomeration of Sn, thus stabilizing the structure during the cycles. Close contact between Na2O and Sn ensures Na+ ion diffusion to the Sn core and reversible conversion of Sn↔ SnO2. Moreover, the deoxygenation effect of the plasma on NGA improves its degree of graphitization and electrical conductivity, which substantially improves the electrode rate performance. As a result, the SnO2@Sn/NGA anode delivers a high initial discharge capacity of 448.5 mAh g−1 at 100 mA g−1. Importantly, this unique nanohybrid electrode design can be extended to advanced anode materials for both lithium‐ and sodium‐ion batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Plasma‐Enabled Ternary SnO₂@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Wang

Liu

et al. 2020

ChemElectroChem

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“…This capacity was assumed as the rated capacity of the electrode and all the rates used in the following work referred to this capacity. The source of the first and second cycles’ irreversible capacity can be ascribed to several factors: (i) the irreversible reduction of tin oxide [48], (ii) the trap of sodium-ion on the graphene sheets or unrepaired defect sites [49], and (iii) the formation of a stable solid–electrolyte interphase (SEI) layer [50]. To better understand what happens during the charge/discharge cycles, Figure 8 reports the dQ dE −1 vs. E differential capacity plot recorded during the first three cycles.…”

Section: Resultsmentioning

confidence: 99%

Tin-Decorated Reduced Graphene Oxide and NaLi0.2Ni0.25Mn0.75Oδ as Electrode Materials for Sodium-Ion Batteries

et al. 2019

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A tin-decorated reduced graphene oxide, originally developed for lithium-ion batteries, has been investigated as an anode in sodium-ion batteries. The composite has been synthetized through microwave reduction of poly acrylic acid functionalized graphene oxide and a tin oxide organic precursor. The final product morphology reveals a composite in which Sn and SnO2 nanoparticles are homogenously distributed into the reduced graphene oxide matrix. The XRD confirms the initial simultaneous presence of Sn and SnO2 particles. SnRGO electrodes, prepared using Super-P carbon as conducting additive and Pattex PL50 as aqueous binder, were investigated in a sodium metal cell. The Sn-RGO showed a high irreversible first cycle capacity: only 52% of the first cycle discharge capacity was recovered in the following charge cycle. After three cycles, a stable SEI layer was developed and the cell began to work reversibly: the practical reversible capability of the material was 170 mA·h·g−1. Subsequently, a material of formula NaLi0.2Ni0.25Mn0.75O was synthesized by solid-state chemistry. It was found that the cathode showed a high degree of crystallization with hexagonal P2-structure, space group P63/mmc. The material was electrochemically characterized in sodium cell: the discharge-specific capacity increased with cycling, reaching at the end of the fifth cycle a capacity of 82 mA·h·g−1. After testing as a secondary cathode in a sodium metal cell, NaLi0.2Ni0.25Mn0.75O was coupled with SnRGO anode to form a sodium-ion cell. The electrochemical characterization allowed confirmation that the battery was able to reversibly cycle sodium ions. The cell’s power response was evaluated by discharging the SIB at different rates. At the lower discharge rate, the anode capacity approached the rated value (170 mA·h·g−1). By increasing the discharge current, the capacity decreased but the decline was not so pronounced: the anode discharged about 80% of the rated capacity at 1 C rate and more than 50% at 5 C rate.

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“…[26][27][28] To alleviate above issues, many research groups adopt carbonaceous materials as a buffer matrix to accommodate the large volume changes of SnO 2 , along with a conductivity enhancer. [29,30] For instance, SnO 2 nanocrystals are dispersed into graphene oxide (GO), [30][31][32] carbon nanotubes (CNTs), [33][34][35] carbon fibers, [36] carbon cloth, [37] pyrolytic carbon [38,39] and so on. Especially, GO and CNTs have been regarded as outstanding support materials for decoration of active nanomaterials owing to their superior electrical conductivity, remarkable flexibility, pronounced chemical and mechanical stability.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

et al. 2020

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SnO2 is considered to be a potential anode material in lithium‐ion batteries (LIBs) owing to its high specific capacity of 1494 mAh g−1. Herein, we reported the unique core‐shell structured C@SnO2@CNTs composite with controllable outer carbon thickness, which was synthesized by a simple hydrothermal method and subsequent annealing process. Results show that the C@SnO2@CNTs with outer carbon layer around 1.8 nm displays high reversible capacity and long‐term cycling performance. It maintains a capacity of 850 mAh g−1 should be at current density of 200 mA g−1 up to 100 cycles. Further analysis found that the C@SnO2@CNTs composite exhibits excellent structural stability even after 100 cycles, which contributes to provide a highway for charge transmission. These results give rise to superior electrochemical performance of C@SnO2@CNTs composite and provide new insight for design metal oxide composite anode materials in LIBs field.

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Graphene supported ultrafine tin oxide nanoparticles enable conversion reaction dominated mechanism for sodium-ion batteries

Cited by 35 publications

References 31 publications

Plasma‐Enabled Ternary SnO₂@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Plasma‐Enabled Ternary SnO₂@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Tin-Decorated Reduced Graphene Oxide and NaLi0.2Ni0.25Mn0.75Oδ as Electrode Materials for Sodium-Ion Batteries

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance

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Graphene supported ultrafine tin oxide nanoparticles enable conversion reaction dominated mechanism for sodium-ion batteries

Cited by 35 publications

References 31 publications

Plasma‐Enabled Ternary SnO2@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Plasma‐Enabled Ternary SnO2@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Tin-Decorated Reduced Graphene Oxide and NaLi0.2Ni0.25Mn0.75Oδ as Electrode Materials for Sodium-Ion Batteries

Rational Design of Core‐Shell Structured C@SnO2@CNTs Composite with Enhanced Lithium Storage Performance

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Plasma‐Enabled Ternary SnO₂@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Plasma‐Enabled Ternary SnO₂@Sn/Nitrogen‐Doped Graphene Aerogel Anode for Sodium‐Ion Batteries

Rational Design of Core‐Shell Structured C@SnO₂@CNTs Composite with Enhanced Lithium Storage Performance