Carbon-coated MoO2 dispersed in three-dimensional graphene aerogel for lithium-ion battery

Zhou, Yu; Liu, Qin; Liu, Daobin; Xie, Hui; Wu, Guixian; Huang, Weifeng; Tian, Yangchao; He, Qun; Khalil, Adnan; Haleem, Yasir A.; Xiang, Ting; Chu, Wei; Zou, Chongwen; Li, Song

doi:10.1016/j.electacta.2015.05.153

Cited by 61 publications

(34 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 3b,t he high-resolutionM o3dc ore level spectrum was deconvoluted into four individual peaks. [43,44] Moreover,t he peaks centered at 236.0 and 231.1 eV could be attributedt oM o VI 3d 3/2 and Mo VI 3d 5/2 of MoO 3 ,r espectively,a rising from the slight surfaceo xidationo f metastable MoO 2 in the air environment. [43,44] Moreover,t he peaks centered at 236.0 and 231.1 eV could be attributedt oM o VI 3d 3/2 and Mo VI 3d 5/2 of MoO 3 ,r espectively,a rising from the slight surfaceo xidationo f metastable MoO 2 in the air environment.…”

Section: Resultsmentioning

confidence: 99%

“…Twos trong peaks centered at 232.9 and 229.7 eV can be ascribed to the binding energies of Mo 3d 3/2 and Mo 3d 5/2 of Mo IV ,r espectively.T he spin energy separation of 3.2 eV for this doublet affirms that the oxidation state of Mo in the MoO 2 /rGO composite is mainly in the 4 + state. [43,44] Moreover,t he peaks centered at 236.0 and 231.1 eV could be attributedt oM o VI 3d 3/2 and Mo VI 3d 5/2 of MoO 3 ,r espectively,a rising from the slight surfaceo xidationo f metastable MoO 2 in the air environment. [45,46] The XPS spectrum of O1sd isplayed in Figure3cc an be split into three peaks.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Direct Growth of MoO₂/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

et al. 2019

View full text Add to dashboard Cite

Hollow MoO2/reduced graphene oxide (MoO2/rGO) sub‐microsphere composites have been fabricated through a simple hydrothermal approach followed by a heat treatment process. When employed as an anode material for potassium‐ion batteries, the as‐synthesized MoO2/rGO composite can deliver an initial charge specific capacity of 367.2 mAh g−1 at 50 mA g−1, and its reversible capacity is 218.9 mAh g−1 after 200 cycles. Even when cycled at 500 mA g−1, a high charge specific capacity of 104.2 mAh g−1 is achieved after 500 cycles. The excellent cycling capability and rate performance may be ascribed to the synergistic effects of the reduced graphene oxide and the hollow MoO2 spheres, which can increase the electrical conductivity of the composite, as well as resisting the strain arising from the repeated discharge–charge processes. These results indicate that the MoO2/rGO hollow sphere composites are promising negative electrode materials for potassium‐ion batteries.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Direct Growth of MoO₂/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

et al. 2019

View full text Add to dashboard Cite

show abstract

“…For the Raman spectra in Figure 2b, both spectra exhibit the obvious characteristic bands of high-crystalline g-MoO 2 , where the bands at 988 and 813 cm −1 refer to the vibrational modes of MoO stretching, the band at 659 cm −1 belongs to the OMoO stretching, the band at 329 cm −1 corresponds to the OMoO bending, and the band at 276 cm −1 signifies the OMoO wagging. [33,34] The D-and G-bands at 1354 and 1602 cm −1 , respectively, reflect the disordered and graphitic carbon, and the I D /I G values are calculated to be 1.12 for b-NC/g-MoO 2 and 1.1 for b-NC/g-MoO 2 @s-MoSe 2 -10, also revealing the amorphous characteristic of b-NC. [35,36] Meanwhile, the additional band (the magnified spectrum in Figure 2c) originated from the out-of-plane A 1g mode of hexagonal MoSe 2 appears at 234 cm −1 , which displays an obvious shift compared with the monolayer MoSe 2 .…”

Section: Resultsmentioning

confidence: 99%

Tunable Surface Selenization on MoO₂‐Based Carbon Substrate for Notably Enhanced Sodium‐Ion Storage Properties

Zeng

Cheng

et al. 2020

Small

View full text Add to dashboard Cite

Transition metal chalcogenides with high theoretical capacity are promising conversion‐type anode materials for sodium ion batteries (SIBs), but often suffer from unsatisfied cycling stability (hundreds of cycles) caused by structural collapse and agglomerate. Herein, a rational strategy of tunable surface selenization on highly crystalline MoO2‐based carbon substrate is designed, where the sheet‐like MoSe2 can be coated on the surface of bundle‐like N‐doped carbon/granular MoO2 substrate, realizing partial transformation from MoO2 to MoSe2, and creating b‐NC/g‐MoO2@s‐MoSe2‐10 with robust hierarchical MoO2@MoSe2 heterostructures and strong chemical couplings (MoC and MoN). Such well‐designed architecture can provide signally improved reaction kinetics and reinforced structural integrity for fast and stable sodium‐ion storage, as confirmed by the ex situ results and kinetic analyses as well as the density functional theory calculations. As expected, the b‐NC/g‐MoO2@s‐MoSe2‐10 delivers splendid rate capability and ultralong cycling stability (254.2 mAh g−1 reversible capacity at 5.0 A g−1 after 6000 cycles with ≈89.0% capacity retention). Therefore, the tunable surface strategy can provide new insights for designing and constructing heterostructures of transition metal chalcogenides toward high‐performance SIBs.

show abstract

“…Combinations of 3DGAs with carbonaceous materials have proved to be effective for further improving the electrochemical performance of 3DGA‐based composite electrodes . To construct a stable 3D carbonaceous interaction matrix, the most typical approach is decorating the graphene framework with carbonaceous materials as additives.…”

Section: Dgas Supporting Active Materials As Composite Electrodes Fomentioning

confidence: 99%

Recent Advances in 3D Graphene Architectures and Their Composites for Energy Storage Applications

Wang

Gao

Zhang

et al. 2018

Small

109

View full text Add to dashboard Cite

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10. 1002/smll.201803858. Graphene is widely applied as an electrode material in energy storage fields. However, the strong π-π interaction between graphene layers and the stacking issues lead to a great loss of electrochemically active surface area, damaging the performance of graphene electrodes. Developing 3D graphene architectures that are constructed of graphene sheet subunits is an effective strategy to solve this problem. The graphene architectures can be directly utilized as binder-free electrodes for energy storage devices. Furthermore, they can be used as a matrix to support active materials and further improve their electrochemical performance. Here, recent advances in synthesizing 3D graphene architectures and their composites as well as their application in different energy storage devices, including various battery systems and supercapacitors are reviewed. In addition, their challenges for application at the current stage are discussed and future development prospects are indicated. Energy Storage www.small-journal.com electrochemically active sites; [14] and iv) combining conductive polymer with 3DGAs to effectively suppress the shuttle effect in lithium-sulfur (Li-S) batteries, increase the specific capacity of supercapacitors, etc. [15] The functionalized 3DGAs combined with the electrochemically active materials could integrate the benefits of each component, thereby improving the specific performance in corresponding applications.In this paper, we first summarized the recent advances in the construction strategies for 3DGAs. Then, we reviewed the applications of 3DGAs and 3DGA-based composite materials in various energy storage devices, including i) lithiumion batteries (LIBs) and sodium-ion batteries (SIBs); ii) Li-S batteries; iii) lithium metal batteries; iv) other battery systems like Li-O 2 batteries; and v) electrochemical supercapacitors. By making systemically summary and comparison, we concluded the achievement and challenges of 3DGAs and their composites in these areas, and the likely future developments are also discussed.

show abstract

Carbon-coated MoO2 dispersed in three-dimensional graphene aerogel for lithium-ion battery

Cited by 61 publications

References 34 publications

Direct Growth of MoO₂/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

Direct Growth of MoO₂/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

Tunable Surface Selenization on MoO₂‐Based Carbon Substrate for Notably Enhanced Sodium‐Ion Storage Properties

Recent Advances in 3D Graphene Architectures and Their Composites for Energy Storage Applications

Contact Info

Product

Resources

About

Carbon-coated MoO2 dispersed in three-dimensional graphene aerogel for lithium-ion battery

Cited by 61 publications

References 34 publications

Direct Growth of MoO2/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

Direct Growth of MoO2/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

Tunable Surface Selenization on MoO2‐Based Carbon Substrate for Notably Enhanced Sodium‐Ion Storage Properties

Recent Advances in 3D Graphene Architectures and Their Composites for Energy Storage Applications

Contact Info

Product

Resources

About

Direct Growth of MoO₂/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

Direct Growth of MoO₂/Reduced Graphene Oxide Hollow Sphere Composites as Advanced Anode Materials for Potassium‐Ion Batteries

Tunable Surface Selenization on MoO₂‐Based Carbon Substrate for Notably Enhanced Sodium‐Ion Storage Properties