Mesoporous Mo<sub>2</sub>C/N-doped carbon heteronanowires as high-rate and long-life anode materials for Li-ion batteries

Yang, Lichun; Li, Xiang; He, Sina; Du, Gaohui; Yu, Xiang; Liu, Jiangwen; Gao, Qingsheng; Hu, Renzong; Zhu, Min

doi:10.1039/c6ta03083a

Cited by 148 publications

(103 citation statements)

References 44 publications

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“…Both a and b are adjustable parameters. The value of b is between 0.5 and 1, which is determined by the slope of log i and log v curves . It is well known that the diffusion control process b is close to 0.5, whereas b approaches 1.0 manifests a behavior with capacitance‐dominated .…”

Section: Resultsmentioning

confidence: 99%

Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

et al. 2019

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Due to its high electrochemical activities and low intercalation potential for Li/Li+, transition metal phosphides (TMPs) are booming as commerciogenic anode for lithium‐ion batteries (LIBs). Herein, the reasonable devise of nitrogen‐doped carbon‐coated CoP (CoP@NC) nanocomposites, which is derived from metal–organic frameworks (MOF‐Co) precursors, combining with graphene modification, is presented. The ultrafine CoP@NC nanoparticles are strongly incorporated with graphene networks (CoP@NC/GO). When assessed as anode electrode for LIBs, novel dual carbon encapsulation architectures of CoP@NC/GO hybrid composites exhibit superior cyclability (345 mAh g−1 at 1500 mA g−1 after 1000 cycles) and prominent rate ability (404 mAh g−1 at 3000 mA g−1). It is believed that this strategy can be helpful for boosting the electrochemical performance of the TMPs family as advance anode materials for energy storage systems.

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Section: Resultsmentioning

confidence: 99%

Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

et al. 2019

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“…Inspired by this natural phenomenon, we adopted various molybdate clusters as inorganic substrate booting from organic amines to obtain the crystalline O−I hybrids with sub‐nanometer‐scale periods . They were then pyrolyzed successfully into various molybdenum carbide nanocrystallites in an inert atmosphere, such as Mo 2 C nanowires, nanoMoC@graphite shell, etc. Due to typical features of obtained catalysts with the nanosized active phases and somewhere with thin graphene shell around, they were proved to exhibit enhancing activity in water splitting reaction over commercial bulky analogues.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous and Skeletal Molybdenum Carbide for Hydrogen Evolution Reaction: Diatomite‐Type Structure and Formation Mechanism

Wang

Shi

et al. 2017

ChemElectroChem

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Molybdenum carbide (MoCx) has generated mounting attentions as noble‐metal‐free electrocatalysts for hydrogen evolution reaction (HER). Herein, triggered by the strategy of organic‐inorganic hybrid oriented transformation in nature, we attempt to prepare a diatomite‐type mesostructured MoCx electrocatalyst via the solid‐state reaction between MoOx/DMF hybrid precursor and β‐cyclodextrin. Benefiting from the occurrence of the designed individual “mesoskeleton‐forming” and “MoCx‐generating” processes during pyrolysis, we successfully harvest the targeted electrocatalyst with mesostructural skeleton composed of inter‐connected MoCx nanoparticles (∼20 nm) and nanorod‐like morphology inheriting from its hybrid precursor. This crosslinked mesostructure can not only greatly decrease the diffusion resistance of reactants/products and promote the exposure of active sites, but also efficiently decrease the contact electrical resistance between neighboring MoCx nanoparticles. Importantly, the heterostructure of Mo2C and MoC on the nanorod is tunable in the synthesis process, which is proved to be favorable for the promoted HER performance in both acid and alkaline media. The strategy for synthesizing such nanostructures may open up new avenues for developing mesoskeletal materials

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“…According to dynamic characterization, the reaction is impacted by the synergistic effect of the diffusion process and capacitive process, the cathode peak and anode peak shift toward opposite directions along with the increasing of scan rate, illustrating the increase in the reaction overpotential. It is well‐recognized that the relationship between measured current ( i ) and scan rate ( v ) obeys the equation: i=av b . The b value decided by the slopes of the line for log ( i ) versus.…”

Section: Resultsmentioning

confidence: 99%

Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface‐Controlled Reactions for Fast and Stable Lithium‐Ion Batteries

Wang

Yang

et al. 2019

ChemElectroChem

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To achieve high‐performance lithium‐ion batteries (LIBs), the ion diffusion behavior in electrode materials is a challenging issue. Herein, 2D FeS/porous carbon nanosheets (FeS@PCSs) hybrids were successfully prepared by a facile, low‐cost strategy involving metal salt‐assisted chemical vapor deposition (CVD) and in situsulfuration process. The unique 2D structure is conducive to shorten the ion diffusion distance, buffer the volume change of FeS nanoparticles, as well as provide abundant sites for Li+ storage. Benefiting from the unique structure, the FeS@PCSs electrode exhibits high surface reaction contributions. When investigated as an anode for lithium‐ion batteries, the as‐prepared FeS@PCSs electrode exhibits a high reversible capacity (1026.2 mAh g−1 at 0.1 A g−1), excellent rate capability (647.2 mAh g−1 at 5 A g−1 and 561.1 mAh g−1 at 10 A g−1), and outstanding cycling stability (888.7 mAh g−1 at 1.0 A g−1 over 800 cycles). This work provides a cost‐effective and scalable route to synthesis the 2D carbon‐based transition metal compounds as high‐performance LIBs anodes.

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Mesoporous Mo₂C/N-doped carbon heteronanowires as high-rate and long-life anode materials for Li-ion batteries

Abstract: Mesoporous Mo2C/N-doped carbon heteronanowires are reported with high capacity and long-term cycle life as anode materials for Li-ion batteries.

Cited by 148 publications

References 44 publications

Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

Mesoporous and Skeletal Molybdenum Carbide for Hydrogen Evolution Reaction: Diatomite‐Type Structure and Formation Mechanism

Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface‐Controlled Reactions for Fast and Stable Lithium‐Ion Batteries

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Mesoporous Mo2C/N-doped carbon heteronanowires as high-rate and long-life anode materials for Li-ion batteries

Abstract: Mesoporous Mo2C/N-doped carbon heteronanowires are reported with high capacity and long-term cycle life as anode materials for Li-ion batteries.

Cited by 148 publications

References 44 publications

Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

Formation of Nitrogen‐Doped Carbon‐Coated CoP Nanoparticles Embedded within Graphene Oxide for Lithium‐Ion Batteries Anode

Mesoporous and Skeletal Molybdenum Carbide for Hydrogen Evolution Reaction: Diatomite‐Type Structure and Formation Mechanism

Confined Metal Sulfides Nanoparticles into Porous Carbon Nanosheets with Surface‐Controlled Reactions for Fast and Stable Lithium‐Ion Batteries

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Mesoporous Mo₂C/N-doped carbon heteronanowires as high-rate and long-life anode materials for Li-ion batteries