Excellent lithium ion storage property of porous MnCo<sub>2</sub>O<sub>4</sub> nanorods

Zeng, Peiyuan; Wang, Xiaoxiao; Ming, Yue; Ma, Qiuyang; Li, Jianwen; Wang, Wanwan; Geng, Baoyou; Fang, Zhen

doi:10.1039/c5ra26176g

Cited by 38 publications

(17 citation statements)

References 66 publications

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“…Both peaks could be deconvoluted indicating the presence of Mn 2+ and Mn 3+ . The two sub peaks at ~642.2 and 654.0 eV can be assigned to Mn 2+ , while the other two at ~644.5 and 657.3 eV are attributed to the presence of Mn 3+ 43. Comparison of the integrated areas of the deconvoluted curves indicated that ~39.5% of the manganese present was in the Mn 3+ valence state.…”

Section: Resultsmentioning

confidence: 95%

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Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries

McNulty

Geaney

O’Dwyer

2017

Sci Rep

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We present the formation of a carbon-coated honeycomb ternary Ni-Mn-Co-O inverse opal as a conversion mode anode material for Li-ion battery applications. In order to obtain high capacity via conversion mode reactions, a single phase crystalline honeycombed IO structure of Ni-Mn-Co-O material was first formed. This Ni-Mn-Co-O IO converts via reversible redox reactions and Li2O formation to a 3D structured matrix assembly of nanoparticles of three (MnO, CoO and NiO) oxides, that facilitates efficient reactions with Li. A carbon coating maintains the structure without clogging the open-worked IO pore morphology for electrolyte penetration and mass transport of products during cycling. The highly porous IO was compared in a Li-ion half-cell to nanoparticles of the same material and showed significant improvement in specific capacity and capacity retention. Further optimization of the system was investigated by incorporating a vinylene carbonate additive into the electrolyte solution which boosted performance, offering promising high-rate performance and good capacity retention over extended cycling. The analysis confirms the possibility of creating a ternary transition metal oxide material with binder free accessible open-worked structure to allow three conversion mode oxides to efficiently cycle as an anode material for Li-ion battery applications.

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Section: Resultsmentioning

confidence: 95%

“…Based on the analysis of the CV curves and previous reports41435158 and the surface stoichiometry suggested from XPS analysis, the Li reactions for Ni-Mn-Co-O IO materials are believed to proceed as follows:…”

Section: Resultsmentioning

confidence: 99%

Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries

McNulty

Geaney

O’Dwyer

2017

Sci Rep

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“…On one hand, the materials were obtained by calcination, which will lead to the formation of lattice defects in the typical nanostructure. These lattice defects will provide more active sites for Li + insertion/extraction, which could improve the specific capacity of the materials [50]. On the other hand, the decomposition and reformation of the SEI layer will also lead to the increase in capacity [51], but the central aspect is that the introduction of oxygen vacancies in the materials, which will provide more physical space for Li + storage, changes the intrinsic property of the sample and leads to the higher specific capacity than theoretical value.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Electrochemical Performance by the Oxygen Vacancies in Hematite as Anode Material for Lithium-Ion Batteries

et al. 2017

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The application of hematite in lithium-ion batteries (LIBs) has been severely limited because of its poor cycling stability and rate performance. To solve this problem, hematite nanoparticles with oxygen vacancies have been rationally designed by a facile sol–gel method and a sequential carbon-thermic reduction process. Thanks to the existence of oxygen vacancies, the electrochemical performance of the as-obtained hematite nanoparticles is greatly enhancing. When used as the anode material in LIBs, it can deliver a reversible capacity of 1252 mAh g−1 at 2 C after 400 cycles. Meanwhile, the as-obtained hematite nanoparticles also exhibit excellent rate performance as compared to its counterparts. This method not only provides a new approach for the development of hematite with enhanced electrochemical performance but also sheds new light on the synthesis of other kinds of metal oxides with oxygen vacancies.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-016-1783-0) contains supplementary material, which is available to authorized users.

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“…(3)), respectively, along with the decomposition of organic electrolyte and the formation of the solid electrolyte interphase (SEI). , [34] [42][43][44] In the anodic scan, two oxidation peaks at~1.50 and~2.05 V can be attributed to the oxidation of Mn and Co, respectively, corresponding to Eq. (2)-(5).…”

Section: Resultsmentioning

confidence: 99%

Metal‐Organic‐Framework‐Derived MCo₂O₄ (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications

et al. 2019

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Electrode materials with special microstructures derived from metal‐organic frameworks (MOFs) exhibited high performance in electrochemical energy storage devices. In this manuscript, using freshly prepared Co−MOF nanosheet arrays as the self‐sacrificed template, MCo2O4 (M=Mn and Zn) nanosheet arrays were successfully grown on carbon cloth (CC) by using a facile solution method. As‐prepared MnCo2O4@CC and ZnCo2O4@CC were used as the integrated electrodes for supercapacitors and Li‐ion batteries. Studies found that both integrated electrodes delivered high capacity and a long cycling life of 20 000 cycles with the capacity retention of 95.5 % for MnCo2O4@CC and 94.7 % for ZnCo2O4@CC at the current density of 50 mA cm−2, respectively. Assembled into asymmetric supercapacitors with carbon nanosheet arrays@CC (CNS@CC), the obtained maximum energy densities were measured to be 25.6 Wh kg−1 at the power density of 3.4 kW kg−1 for MnCo2O4@CC//CNS@CC based device and 22.7 Wh kg−1 at the power density of 4.1 kW kg−1 for ZnCo2O4@CC//CNS@CC based device, respectively. In addition, both integrated electrodes also showed good lithium storage performance, delivering high capacities of 1289 mA h/g (MnCo2O4@CC) and 1376 mA h/g (ZnCo2O4@CC) even after 200 cycles at the current density of 1 A g−1, respectively. The outstanding performances suggest the potential of both nanosheet arrays integrated electrodes for extensive applications in energy storage devices.

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Excellent lithium ion storage property of porous MnCo₂O₄ nanorods

Abstract: The porous MnCo2O4 nanorods have been successfully prepared by a simple and economic method and exhibited a high electrochemical performance.

Cited by 38 publications

References 66 publications

Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries

Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries

Enhancement of Electrochemical Performance by the Oxygen Vacancies in Hematite as Anode Material for Lithium-Ion Batteries

Metal‐Organic‐Framework‐Derived MCo₂O₄ (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications

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Excellent lithium ion storage property of porous MnCo2O4 nanorods

Abstract: The porous MnCo2O4 nanorods have been successfully prepared by a simple and economic method and exhibited a high electrochemical performance.

Cited by 38 publications

References 66 publications

Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries

Carbon-Coated Honeycomb Ni-Mn-Co-O Inverse Opal: A High Capacity Ternary Transition Metal Oxide Anode for Li-ion Batteries

Enhancement of Electrochemical Performance by the Oxygen Vacancies in Hematite as Anode Material for Lithium-Ion Batteries

Metal‐Organic‐Framework‐Derived MCo2O4 (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications

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Product

Resources

About

Excellent lithium ion storage property of porous MnCo₂O₄ nanorods

Metal‐Organic‐Framework‐Derived MCo₂O₄ (M=Mn and Zn) Nanosheet Arrays on Carbon Cloth as Integrated Anodes for Energy Storage Applications