Metal oxyacid salts-confined pyrolysis towards hierarchical porous metal oxide@carbon (MO@C) composites as lithium-ion battery anodes

Xu, Huizhong; Gao, Chunqing; Cheng, Zhipeng; Kong, Linghui; Li, Wei; Dong, Xiaochen; Lin, Jianjian

doi:10.1007/s12274-023-5445-0

Cited by 14 publications

(3 citation statements)

References 72 publications

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“…Based on our previously reported work, [28] a novel molybdenum‐based oxyacid salt confined pyrolysis strategy is used to construct hierarchical porous MoO 2 @Mo 2 N@C composite. The detailed synthesis process is shown in Scheme 1.…”

Section: Resultsmentioning

confidence: 99%

Constructing Hierarchical Porous MoO₂@Mo₂N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Gao

Kong

et al. 2023

Chemistry A European J

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Molybdenum dioxide (MoO2) demonstrates a big potential toward lithium‐ion storage due to its high theoretical capacity. The sluggish reaction kinetics and large volume change during cycling process, however, unavoidably lead to inferior electrochemical performance, thus failing to satisfy the requirements of practical applications. Herein, we developed a molybdenum‐based oxyacid salt confined pyrolysis strategy to achieve a novel hierarchical porous MoO2@Mo2N@C composite. A two‐step successive annealing process was proposed to obtain a hybrid phase of MoO2 and Mo2N, which was used to further improve the electrochemical performance of MoO2‐based anode. We demonstrate that the well‐dispersed MoO2 nanoparticles can ensure ample active sites exposure to the electrolyte, while conductive Mo2N quantum dots afford pseudo‐capacitive response, which conduces to the migration of ions and electrons. Additionally, the interior voids could provide buffer spaces to surmount the effect of volume change, thereby avoiding the fracture of MoO2 nanoparticles. Benefiting from the aforesaid synergies, the as‐obtained MoO2@Mo2N@C electrode demonstrates a striking initial discharge capacity (1760.0 mAh g−1 at 0.1 A g−1) and decent long‐term cycling stability (652.5 mAh g−1 at 1.0 A g−1). This work provides a new way for the construction of advanced anode materials for lithium‐ion batteries.

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Section: Resultsmentioning

confidence: 99%

Constructing Hierarchical Porous MoO₂@Mo₂N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Gao

Kong

et al. 2023

Chemistry A European J

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“…Nevertheless, most transition metal oxides display poor conductivity, thereby leading to the low utilization efficiency and rate performance of active materials [ 10 , 11 ]. To improve the low conductivity of transition metal oxide electrode materials, generally, they are combined with high-conductivity carbon materials [ 12 , 13 ]. For such composite materials, transition metal oxides only come into contact with conductive carbon on their surface, and the internal conductivity of the transition metal oxide materials has not been improved.…”

Section: Introductionmentioning

confidence: 99%

Facilely Fabricating F-Doped Fe3N Nanoellipsoids Grown on 3D N-Doped Porous Carbon Framework as a Preeminent Negative Material

Zhang,

et al. 2024

Molecules

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Transition metal nitride negative electrode materials with a high capacity and electronic conduction are still troubled by the large volume change in the discharging procedure and the low lithium ion diffusion rate. Synthesizing the composite material of F-doped Fe3N and an N-doped porous carbon framework will overcome the foregoing troubles and effectuate a preeminent electrochemical performance. In this study, we created a simple route to obtain the composite of F-doped Fe3N nanoellipsoids and a 3D N-doped porous carbon framework under non-ammonia atmosphere conditions. Integrating the F-doped Fe3N nanoellipsoids with an N-doped porous carbon framework can immensely repress the problem of volume expansion but also substantially elevate the lithium ion diffusion rate. When utilized as a negative electrode for lithium-ion batteries, this composite bespeaks a stellar operational life and rate capability, releasing a tempting capacity of 574 mAh g–1 after 550 cycles at 1.0 A g–1. The results of this study will profoundly promote the evolution and application of transition metal nitrides in batteries.

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“…[1] However, violent volume change during charge/discharge resulting in the destruction of structures, [2] which not only cause lower specific capacity, but also bring the worse chemical and structural stability. [3] All of these hinder the development of TMOs anode materials.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Sub‐1 nm Nanosheets of Co‐assembled MnZnCuO_x and Polyoxometalate Clusters as Anodes for Li‐ion Batteries

Yuan,

Ge,

Shi

et al. 2023

Angew Chem Int Ed

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Hybrid Sub‐1 nm Nanosheets of Co‐assembled MnZnCuOx and Polyoxometalate Clusters as Anodes for Li‐ion BatteriesTransition metal oxide (TMO) anode materials in lithium‐ion batteries (LIBs) usually suffer from serious volume expansion leading to the pulverization of structures, further giving rise to lower specific capacity and worse cycling stability. Herein, by introducing polyoxometalate (POM) clusters into TMOs and precisely controlling the amount of POMs, the MnZnCuOx‐phosphomolybdic acid hybrid sub‐1 nm nanosheets (MZC‐PMA HSNSs) anode is successfully fabricated, where the special electron rich structure of POMs is conducive to accelerating the migration of lithium ions on the anode to obtain higher specific capacity, and the non‐covalent interactions between POMs and TMOs make the HSNSs possess excellent structural and chemical stability, thus exhibiting outstanding electrochemical performance in LIBs, achieving a high reversible capacity (1157 mAh g‐1 at 100 mA g‐1) and an admirable long‐term cycling stability at low and high current densities.

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Metal oxyacid salts-confined pyrolysis towards hierarchical porous metal oxide@carbon (MO@C) composites as lithium-ion battery anodes

Cited by 14 publications

References 72 publications

Constructing Hierarchical Porous MoO₂@Mo₂N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Constructing Hierarchical Porous MoO₂@Mo₂N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Facilely Fabricating F-Doped Fe3N Nanoellipsoids Grown on 3D N-Doped Porous Carbon Framework as a Preeminent Negative Material

Hybrid Sub‐1 nm Nanosheets of Co‐assembled MnZnCuO_x and Polyoxometalate Clusters as Anodes for Li‐ion Batteries

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Metal oxyacid salts-confined pyrolysis towards hierarchical porous metal oxide@carbon (MO@C) composites as lithium-ion battery anodes

Cited by 14 publications

References 72 publications

Constructing Hierarchical Porous MoO2@Mo2N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Constructing Hierarchical Porous MoO2@Mo2N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Facilely Fabricating F-Doped Fe3N Nanoellipsoids Grown on 3D N-Doped Porous Carbon Framework as a Preeminent Negative Material

Hybrid Sub‐1 nm Nanosheets of Co‐assembled MnZnCuOx and Polyoxometalate Clusters as Anodes for Li‐ion Batteries

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Constructing Hierarchical Porous MoO₂@Mo₂N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Constructing Hierarchical Porous MoO₂@Mo₂N@C Composite via a Confined Pyrolysis Synthetic Strategy Towards Lithium‐Ion Battery Anodes

Hybrid Sub‐1 nm Nanosheets of Co‐assembled MnZnCuO_x and Polyoxometalate Clusters as Anodes for Li‐ion Batteries