High Anode Performance of in Situ Formed Cu<sub>2</sub>Sb Nanoparticles Integrated on Cu Foil via Replacement Reaction for Sodium-Ion Batteries

Wang, Liubin; Wang, Chenchen; Zhang, Ning; Li, Fujun; Cheng, Peng; Chen, Jun

doi:10.1021/acsenergylett.6b00649

Cited by 114 publications

(72 citation statements)

References 51 publications

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“…The evolution of the MoO 3− x structure and oxidation states throughout electrochemical cycling was studied mainly by ex situ transmission electron microscopy (TEM) and X‐ray absorption spectroscopy (XAS). We propose an interfacial‐related Li + ‐storage mechanism in MoO 3 and demonstrate the mechanism by deliberately conjugating the electrochemical surfaces of MoO 3− x using an annealing process to deposit Cu 2 O onto MoO 3− x on Cu current collectors . The introduction of Cu 2 O affects the overall mechanism not by simply participating in the reaction with Li + ions but also by assisting the interfacial reaction of MoO 3− x .…”

Section: Introductionmentioning

confidence: 88%

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO₃ on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO_3−x Anodes

et al. 2020

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MoO3 has great potential as an electrode for lithium‐ion batteries due to its unique layered structure that can host Li+. Despite high theoretical capacity (≈1117 mAh g−1), MoO3 is not widely used simply because of poor rate capability due to lower electronic conductivity and severe pulverization. The Li‐storage mechanism in MoO3 is also still unclear. Herein, oxygen‐vacancy‐controlled MoO3 is used without any additional binders and conductive materials to directly examine the Li‐storage mechanism on MoO3−x. Li‐storage capacity based on the reversible formation/decomposition of solid‐electrolyte interphase (SEI) films and the transformation of MoO3−x to amorphous Li2MoO3 is demonstrated. The surfaces of MoO3−x are conjugated with Cu2O nanoparticles via annealing at 200 °C. Cu2O acts as an effective catalyst for the formation of SEI films and the reversible reaction of MoO3−x with Li+ ions. As a result, Cu2O@MoO3−x exhibits a charge capacity of 1100 mAh g−1 after the second cycle and maintains a high reversible capacity, whereas MoO3−x exhibits a charge capacity of 900 mAh g−1 and fades to 590 mAh g−1 after 100 cycles at 1 A g−1.

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Section: Introductionmentioning

confidence: 88%

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO₃ on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO_3−x Anodes

et al. 2020

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“…[7] Of equal importance, substantial efforts have been devoted to developing anode materials for full SIBs. [11][12][13][14] Recently, nanostructured Bi@ graphite presented to show outstanding rate capability for Na storage from −20 to 60 °C. [9] Impressively, metals (i.e., Bi, Sn, or Sb) and alloys have been demonstrated to have safe sodiation potentials in a wide temperature range and large theoretical capacities of >300 mAh g −1 based on an alloying/dealloying mechanism.…”

Section: A High-power Na 3 V 2 (Po 4 ) 3 -Bi Sodium-ion Full Battery mentioning

confidence: 99%

A High‐Power Na₃V₂(PO₄)₃‐Bi Sodium‐Ion Full Battery in a Wide Temperature Range

Wang

Song

et al. 2019

Advanced Energy Materials

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117

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/aenm.201900022. Sodium-Ion BatteriesSodium-ion batteries (SIBs) are promising for large-scale electric energy storage due to the high abundance and wide distribution of sodium resources (Na, 2.74% in the Earth's crust). [1] Construction of full SIBs strongly relies on the selected cathodes, anodes, and their compatibility with electrolytes. [2] Although progress has been obtained in the separate individual cathode and anode, full SIBs with high performance, especially high power density, are still lacking. [3] This is closely related to the large-sized Na + (1.02 Å) as charge carriers shuttling between cathode and anode, which usually leads to sluggish kinetics and structural instability of electrode materials. [4] When operated below 0 °C outdoors for practical applications, the reaction and transport kinetics of SIBs becomes severely slow, [2,5] resulting in reduced capacity, efficiency, and power density. Therefore, realization of full SIBs with high power density and operation in a wide temperature range is faced with

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“…We also quantitatively analyzed the relationship between capacitive effects and diffusion‐controlled interaction according to the following equation [Eq. ]:

true i ((), v) = k_{1} v + k_{2} v^{1 / 2}

…”

Section: Resultsmentioning

confidence: 99%

Targeted Construction of Amorphous MoS_x with an Inherent Chain Molecular Structure for Improved Pseudocapacitive Lithium‐Ion Response

Wang

Fan

Wang

et al. 2019

Chemistry A European J

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Owing to low ion/electron conductivity and large volume change, transitional metal dichalcogenides (TMDs) suffer from inferior cycle stability and rate capability when used as the anode of lithium‐ion batteries (LIBs). To overcome these disadvantages, amorphous molybdenum sulfide (MoSx) nanospheres were prepared and coated with an ultrathin carbon layer through a simple one‐pot reaction. Combining X‐ray photoelectron spectroscopy (XPS) with theoretical calculations, MoSx was confirmed as having a special chain molecular structure with two forms of S bonding (S2− and S22−), the optimal adsorption sites of Li+ were located at S22−. As a result, the MoSx electrode exhibits superior cycle and rate capacities compared with crystalline 2H‐MoS2 (e.g., delivering a high capacity of 612.4 mAh g−1 after 500 cycles at 1 A g−1). This is mainly attributed to more exposed active S22− sites for Li storage, more Li+ transfer pathways for improved ion conductivity, and suppressed electrode structure pulverization of MoSx derived from the inherent chain‐like molecular structure. Quantitative charge storage analysis further demonstrates the improved pseudocapacitive contribution of amorphous MoSx induced by fast reaction kinetics. Moreover, the morphology contrast after cycling demonstrates the dispersion of active materials is more uniform for MoSx than 2H‐MoS2, suggesting the MoSx can well accommodate the volume stress of the electrode during discharging. Through regulating the molecular structure, this work provides an effective targeted strategy to overcome the intrinsic issues of TMDs for high‐performance LIBs.

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High Anode Performance of in Situ Formed Cu₂Sb Nanoparticles Integrated on Cu Foil via Replacement Reaction for Sodium-Ion Batteries

Cited by 114 publications

References 51 publications

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO₃ on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO_3−x Anodes

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO₃ on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO_3−x Anodes

A High‐Power Na₃V₂(PO₄)₃‐Bi Sodium‐Ion Full Battery in a Wide Temperature Range

Targeted Construction of Amorphous MoS_x with an Inherent Chain Molecular Structure for Improved Pseudocapacitive Lithium‐Ion Response

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High Anode Performance of in Situ Formed Cu2Sb Nanoparticles Integrated on Cu Foil via Replacement Reaction for Sodium-Ion Batteries

Cited by 114 publications

References 51 publications

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO3 on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO3−x Anodes

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO3 on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO3−x Anodes

A High‐Power Na3V2(PO4)3‐Bi Sodium‐Ion Full Battery in a Wide Temperature Range

Targeted Construction of Amorphous MoSx with an Inherent Chain Molecular Structure for Improved Pseudocapacitive Lithium‐Ion Response

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High Anode Performance of in Situ Formed Cu₂Sb Nanoparticles Integrated on Cu Foil via Replacement Reaction for Sodium-Ion Batteries

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO₃ on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO_3−x Anodes

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO₃ on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO_3−x Anodes

A High‐Power Na₃V₂(PO₄)₃‐Bi Sodium‐Ion Full Battery in a Wide Temperature Range

Targeted Construction of Amorphous MoS_x with an Inherent Chain Molecular Structure for Improved Pseudocapacitive Lithium‐Ion Response