Facile synthesis of microsized MnO/C composites with high tap density as high performance anodes for Li-ion batteries

Wang, Jian‐Gan; Liu, Huanyan; Liu, Hongzhen; Zhang, Fu; Ding, Nan

doi:10.1016/j.cej.2017.07.039

Cited by 124 publications

(58 citation statements)

References 54 publications

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“…[1][2][3][4][5] Nevertheless, the low energyd ensity and theoretical capacity (372 mA hg À1 )o fg raphite-based anodes in most commercial LIBs limit their development and potential applications. [6][7][8][9][10] To meet the rapidlyi ncreasingd emand for higher power density and energy density,a dvanced alternatives with higher capacity as anodem aterials is required. Notably,t ransition-metal oxide materials have displayed promising potential because of their higherr eversible capacities.…”

Section: Introductionmentioning

confidence: 99%

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Zhang

Jiang

et al. 2018

Chemistry A European J

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The practical applications of Mn O in lithium-ion batteries are greatly hindered by fast capacity decay and poor rate performance as a result of significant volume changes and low electrical conductivity. It is believed that the synthesis of nanoscale Mn O combined with carbonaceous matrix will lead to a better electrochemical performance. Herein, a convenient route for the synthesis of Mn O nanoparticles grown in situ on hollow carbon nanofiber (denoted as HCF/Mn O ) is reported. The small size of Mn O particles combined with HCF can significantly alleviate volume changes and electrical conductivity; the strong chemical interactions between HCF and Mn O would improve the reversibility of the conversion reaction for MnO into Mn O and accelerate charge transfer. These features endow the HCF/Mn O composite with superior cycling stability and rate performance if used as the anode for lithium-ion batteries. The composite delivers a high discharge capacity of 835 mA h g after 100 cycles at 200 mA g , and 652 mA h g after 240 cycles at 1000 mA g . Even at 2000 mA g , it still shows a high capacity of 528 mA h g . The facile synthetic method and outstanding electrochemical performance of the as-prepared HCF/Mn O composite make it a promising candidate for a potential anode material for lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Zhang

Jiang

et al. 2018

Chemistry A European J

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“…The Raman band centered at 659 cm À 1 originates from lattice vibration of cubic phase MnO. [26,39] . The G band at 1586 cm À 1 is associated with sp 2 -type ordered graphitic carbon structure, whereas the D band at 1357 cm À 1 is related to sp 3 -type disordered carbon structure .…”

Section: Resultsmentioning

confidence: 99%

“…[19,20] Nevertheless, similar to other transition-metal oxides materials, MnO has also suffers from drastic volume changes and low electrical conductivity during repeated lithium insertion/extraction processes, thereby leading to inferior electrochemical performance. [26] In another study, Zhu et al prepared walnut-like multicore-shell structure of ultrafine MnO nanoparticles encapsulated nitrogen rich carbon nanocapsules as an anode for LIBs, it delivered remarkable electrochemical performances including high reversible capability of 762 mAh g À 1 at 100 mA g À 1 and stable cycling ability with 624 mAh g À 1 after 1000 cycles at 1000 mA g À 1 . [9,[22][23][24][25] For instance, Wang et al prepared MnO/C solid microspheres as an anode for LIBs via a facile chemical synthesis of in situ interfacial polymerization and carbonization treatment and it showed high specific capacity of 818 mAh g À 1 after 100 cycles at 100 mA g À 1 .…”

Section: Introductionmentioning

confidence: 99%

Hierarchically Pomegranate‐Like MnO@porous Carbon Microspheres as an Enhanced‐Capacity Anode for Lithium‐Ion Batteries

Gao

Huang

et al. 2019

ChemElectroChem

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Transition-metal oxides have attracted much attention as promising anode materials, owing to high theoretical specific capacity for lithium-ion batteries (LIBs). However, rapid performance degradation derived from poor electrical conductivity and drastic volume changes during the repeated lithium insertion/ extraction processes has limited their practical applications. In this work, we design and prepare pomegranate-like microspheres of nano-sized MnO particles with gaps among them as the core and porous carbon as the shell (designated as PCMS@MnO) by using a facile three-step process. In such unique PCMS@MnO, the porous carbon shell from phenolic resin is beneficial for the electronic conductivity and wettability, whereas the nano-sized MnO particles with gaps among them confined in the porous carbon shell can effectively prevent aggregation and pulverization of active materials. As an anode material for LIBs, the PCMS@MnO with a carbon content of about 12 wt % exhibits remarkably high reversible capability (935 mAh g À 1 at 100 mA g À 1 ), outstanding rate performance, and superior cycling stability (527 mAh g À 1 of 2000 mA g À 1 after 2000 cycles). Our results suggest a great potential of pomegranate-like transition-metal oxide-based composites as anode materials in high-performance LIBs.

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“…The atomicr atio between Mn and Vw as approximately 1, which is consistent with the inductivelyc oupled plasma mass spectrometry (ICP-MS) results( Mn:1 0.9 wt %; V: 10.6 wt %). [41,42] The Mn 3s peak ( Figure 3c) shows two multiplet split components, which are causedb y3 s-3d electronic coupling (peak separation: 5.9 eV);t his indicates the presence of Mn II in MnO (expected peak separation:6 .0 eV). [41,42] The Mn 3s peak ( Figure 3c) shows two multiplet split components, which are causedb y3 s-3d electronic coupling (peak separation: 5.9 eV);t his indicates the presence of Mn II in MnO (expected peak separation:6 .0 eV).…”

Section: Characterizationmentioning

confidence: 99%

“…[41,42] The Mn 3s peak ( Figure 3c) shows two multiplet split components, which are causedb y3 s-3d electronic coupling (peak separation: 5.9 eV);t his indicates the presence of Mn II in MnO (expected peak separation:6 .0 eV). [42] [42] …”

Section: Characterizationmentioning

confidence: 99%

Transition‐Metal Oxides/Carbides@Carbon Nanotube Composites as Multifunctional Electrocatalysts for Challenging Oxidations and Reductions

Xing

Liu

Cao

et al. 2019

Chemistry A European J

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Ther apid development of renewable-energy technologies such as water splitting, rechargeable metal-air batteries, and fuel cells requires highly efficient electrocatalysts capable of the oxygen-reduction reaction( ORR) and the oxygen-evolution reaction( OER). Herein, we report af acile sonication-driven synthesis to deposit the molecular manganese vanadium oxide precursor [Mn 4 V 4 O 17 (OAc) 3 ] 3À on multiwalled carbon nanotubes (MWCNTs). Thermal conversion of this composite at 900 8Cg ives nanostructured manganese vanadium oxides/carbides, which are stably linked to the MWCNTs. The resulting composites show excellent electrochemical reactivity for ORR and OER, and significant reactivi-ty enhancements compared with the precursors and aP t/C reference are reported.N otably,e ven under harsh acidic conditions, long-term OER activity at low overpotential is reported. In addition, we report exceptional activity of the composites for the industrially important Cl 2 evolution from an aqueous HCl electrolyte. The new composite material showsh ow molecular deposition routes leading to highly active and stable multifunctional electrocatalysts can be developed.T he facile design could in principle be extended to multiple catalystc lasses by tuning of the molecular metal oxide precursor employed.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.Scheme1.Schematicillustration of the synthesized composites( MC x / MO x = Mn 7 C 3 /V 8 C 7 /MnO).Figure 1. PowderX-ray diffraction of a) composites prepared at different temperatures and b) 1-900 with specified peaks.

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Facile synthesis of microsized MnO/C composites with high tap density as high performance anodes for Li-ion batteries

Cited by 124 publications

References 54 publications

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Hierarchically Pomegranate‐Like MnO@porous Carbon Microspheres as an Enhanced‐Capacity Anode for Lithium‐Ion Batteries

Transition‐Metal Oxides/Carbides@Carbon Nanotube Composites as Multifunctional Electrocatalysts for Challenging Oxidations and Reductions

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Facile synthesis of microsized MnO/C composites with high tap density as high performance anodes for Li-ion batteries

Cited by 124 publications

References 54 publications

In Situ Synthesis of Mn3O4 Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

In Situ Synthesis of Mn3O4 Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Hierarchically Pomegranate‐Like MnO@porous Carbon Microspheres as an Enhanced‐Capacity Anode for Lithium‐Ion Batteries

Transition‐Metal Oxides/Carbides@Carbon Nanotube Composites as Multifunctional Electrocatalysts for Challenging Oxidations and Reductions

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In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode