MoO<sub>2</sub>-Ordered Mesoporous Carbon Nanocomposite as an Anode Material for Lithium-Ion Batteries

Ling, Zeng; Zheng, Cheng; Deng, Cuilin; Ding, Xiaokun; Wei, Mingdeng

doi:10.1021/am303286n

Cited by 139 publications

(89 citation statements)

References 38 publications

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“…MoO 2 /graphene oxide (GO) composite delivered a capacity of 720 mAh g -1 and 560 mAh g -1 after 30 cycles at a current density of 100 mA g -1 and 800 mA g -1 , respectively [10]. MoO 2 −ordered mesoporous carbon could maintain a capacity as high as 689 mA h g −1 after 50 cycles at 50 mA g -1 [21]. MoO 2 -C spheres exhibited good cycling performance and delivered a discharge capacity of 812 mAh g -1 when cycled at 0.2 A g -1 [9].…”

Section: Introductionmentioning

confidence: 99%

MoO2/Mo2C/C spheres as anode materials for lithium ion batteries

Ihsan

Wang

Majid

et al. 2016

Carbon

101

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MoO2/Mo2C/C spheres have been synthesized through hydrothermal and calcination processes. MoO2 is well known for its high theoretical capacity of 838 mAh g-1, but undergoes capacity fading during Li+ insertion/extraction processes. Mo2C has high specific conductance (1.02 x 102 S cm-1) that can provide better electronic conductivity. Carbon is popular for its ability to accommodate the volume variation during charge/discharge. By taking advantage of the combination of Mo2C and C, these MoO2/Mo2C/C spheres demonstrate not only high cycling performance, but also good rate capability when they are used as anode materials for lithium ion batteries. After 100 cycles at 100 mA g-1, the discharge capacities of the MoO2/ Mo2C/C spheres remain at 800 mAh g-1, suggesting that MoO2/Mo2C/C spheres are promising candidates as anode material for lithium ion batteries. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsIhsan, M., Wang, H., Majid, S. R., Yang, J., Kennedy, S. J., Guo, Z. & Liu, H. Kun. (2016 AbstractMoO 2 /Mo 2 C/C spheres have been synthesized through hydrothermal and calcination processes. MoO 2 is well known for its high theoretical capacity of 838 mAh g -1 , but undergoes capacity fading during Li + insertion/extraction processes. Mo 2 C has high specific conductance (1.02 × 10 2 S cm -1 ) that can provide better electronic conductivity. Carbon is popular for its ability to accommodate the volume variation during charge/discharge. By taking advantage of the combination of Mo 2 C and C, these MoO 2 /Mo 2 C/C spheres demonstrate not only high cycling performance, but also good rate capability when they are used as anode materials for lithium ion batteries. After 100 cycles at 100 mA g -1 , the discharge capacities of the MoO 2 /Mo 2 C/C spheres remain at 800 mAh g -1 , suggesting that MoO 2 /Mo 2 C/C spheres are promising candidates as anode material for lithium ion batteries.

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Section: Introductionmentioning

confidence: 99%

MoO2/Mo2C/C spheres as anode materials for lithium ion batteries

Ihsan

Wang

Majid

et al. 2016

Carbon

101

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“…As bulk MoO 2 generally shows poor Li storage capability due to kinetic barrier [4], diverse nanomaterials such as nanoparticles [5,6], nanowires [7,8], nanorods [9], nanobelts [10], and complex assemblies [11][12][13][14] have been engineered. These nanoscale materials exhibit upgraded Li-storage performance compared with bulk counterpart, due to higher surface areas, more active sites, and shorter ion diffusion paths [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Ultrathin MoO2 nanosheets for superior lithium storage

et al. 2015

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“…[1][2][3][4][5] Motivated by this, high-specifi ccapacity layered Li-rich materials and high-rate-capability spinel cathodes have attracted much attention. [6][7][8][9][10] Layered Li-rich materials can deliver a capacity larger than 200 mA h g −1 when charged above 4.5 V, [ 11 ] which however suffer from an inferior know the signifi cant infl uences of synthesis temperatures on compositions and the contents of the layered and spinel phases in composite.…”

Section: Introductionmentioning

confidence: 99%

A New Spinel‐Layered Li‐Rich Microsphere as a High‐Rate Cathode Material for Li‐Ion Batteries

Luo

et al. 2014

Advanced Energy Materials

180

105

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rate capability. [ 12,13 ] In contrast, spinel cathodes exhibit a high-rate capability due to the effi cient 3D diffusion of lithium ions, nevertheless the discharge capacity is low, only about 130 mA h g −1 . [ 14,15 ] Then, a highly interesting, but also challenging question appears: can the rate capability be much improved by introducing spinel component into the layered oxides? Previous investigations have shown that the cubic close-packed oxygen arrays in both the layered and spinel oxides are structurally compatible. [ 16 ] Therefore, it is possible to integrate the Li-rich layered and spinel oxides into a composite, which might show both a high capacity and an excellent rate capability.Much effort has been devoted to the preparation of composites that intergrate both layered Li-rich oxides and spinel oxides (i.e., spinel-layered materials), which have led to several high-energy and power electrodes, [17][18][19][20] such as the outstanding cathode materials of spinel/ layered heterostructure, [ 17 ] [ 18 ] Unfortunately, most synthetic methods still suffer from several shortcomings. For instance, it is diffi cult to obtain a homogeneous mixture of layered and spinel oxides. The preparation procedures are always tedious, which may introduce uncertain factors in reproducing the electrochemical performance. On the other hand, metal-ion impurities, such as K + , were inevitably introduced into the fi nal products. In particular, the synthetic methods ever reported cannot allow the control over the morphology to give microspheres of spinellayered materials, due to the multiple transition metal ions and phases involved. As a consequence, spherical spinel-layered cathode materials are highly necessary, which expect to impose a signifi cant impact on electrochemical performance (especially for rate capability) of Li-ions batteries.Here, we report on the preparation of a spinel-layered Lirich Li-Mn-Co-O microsphere using a solvothermal-precursor method. This method is an extension of ther oxalate-precursor method, [ 21 ] which has been successfully applied to prepare Lirich layered composite cathodes. This new method has the advantages of the oxalate-precursor method where lithium ions and transition metal ions are precipitated simultaneously in the absence of alkali metal ions to form uniform precursors, and provides the possibility for regulation of spherical morphology and dimension. Based on previous results, [ 16,22 ] we Li-rich layered materials are considered to be the promising low-cost cathodes for lithium-ion batteries but they suffer from poor rate capability despite of efforts toward surface coating or foreign dopings. Here, spinel-layered Li-rich Li-Mn-Co-O microspheres are reported as a new high-rate cathode material for Li-ion batteries. The synthetic procedure is relatively simple, involving the formation of uniform carbonate precursor under solvothermal conditions and its subsequent transformation to an assembled microsphere that integrates a spinel-like component with a layered component by a heat...

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MoO₂-Ordered Mesoporous Carbon Nanocomposite as an Anode Material for Lithium-Ion Batteries

Cited by 139 publications

References 38 publications

MoO2/Mo2C/C spheres as anode materials for lithium ion batteries

MoO2/Mo2C/C spheres as anode materials for lithium ion batteries

Ultrathin MoO2 nanosheets for superior lithium storage

A New Spinel‐Layered Li‐Rich Microsphere as a High‐Rate Cathode Material for Li‐Ion Batteries

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MoO2-Ordered Mesoporous Carbon Nanocomposite as an Anode Material for Lithium-Ion Batteries

Cited by 139 publications

References 38 publications

MoO2/Mo2C/C spheres as anode materials for lithium ion batteries

MoO2/Mo2C/C spheres as anode materials for lithium ion batteries

Ultrathin MoO2 nanosheets for superior lithium storage

A New Spinel‐Layered Li‐Rich Microsphere as a High‐Rate Cathode Material for Li‐Ion Batteries

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MoO₂-Ordered Mesoporous Carbon Nanocomposite as an Anode Material for Lithium-Ion Batteries