A peapod-inspired MnO@C core-shell design for lithium ion batteries

Wang, Shengbin; Xing, Yalan; Xiao, Changlei; Xu, Huaizhe; Zhang, Shichao

doi:10.1016/j.jpowsour.2015.12.125

Cited by 93 publications

(58 citation statements)

References 28 publications

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“…Moreover, the robust 3D hierarchical microballs structure and internal void spaces between the manganese oxide and carbon accommodate the volume change of MnO during cycling. Therefore, the design meets all the requirements of MnO, which endows the cell with excellent cycling stability (1247.7 mA h g −1 after 90 cycles at 200 mA g −1 ) and a high rate performance (949.6 mA h g −1 after 450 cycles at 1000 mA g −1 ) …”

Section: Introductionmentioning

confidence: 99%

3D Hierarchical Microballs Constructed by Intertwined MnO@N‐doped Carbon Nanofibers towards Superior Lithium‐Storage Properties

Fan

et al. 2018

Chemistry A European J

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MnO is a promising high-capacity anode material for lithium-ion batteries (LIBs), but pristine material suffers short cycle life and poor rate capability, thus hindering the practical application. In this work, a new type of porous MnO microballs stringed with N-doped porous carbon (3DHB-MnO@NC) with a well-connected hierarchical three-dimensional network structure was prepared by the facile self-template method. The 3DHB-MnO@NC electrode can effectively promote the ion/electron transfer and buffer the large volume change of electrode during the electrochemical reaction. As the anode for LIBs, the 3DHB-MnO@NC possesses outstanding cycling performance (1247.7 mA h g after 90 cycles at 200 mA g ) and good rate capabilities (949.6 mA h g after 450 cycles at 1000 mA g ). The facile self-template method of the prepared 3DHB-MnO@NC composite paves a new way for practical applications of MnO in high performance LIBs.

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Section: Introductionmentioning

confidence: 99%

3D Hierarchical Microballs Constructed by Intertwined MnO@N‐doped Carbon Nanofibers towards Superior Lithium‐Storage Properties

Fan

et al. 2018

Chemistry A European J

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“…All of these materials exhibited good electrochemical properties. PDA was selected as the carbon precursor because of the strong and convenient coating capability and its valuable N‐doping effect, which can improve the electrical conductivity, the lithium–ion permeability of the carbon layer, the charge transfer at the interface, and the stability of the solid–electrolyte interface (SEI) films . Yao et al.…”

Section: Introductionmentioning

confidence: 99%

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

Luo

Zang

et al. 2017

Energy Tech

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Carbon‐coated magnesium ferrite (MgFe2O4@C) nanofibers were synthesized by electrospinning technology and a subsequent carbonization process using polydopamine as carbon precursor. SEM and TEM observations revealed that N‐doped carbon layers with different thicknesses were coated uniformly on the surface of the MgFe2O4 nanofibers. If used as anode materials for lithium–ion batteries (LIBs), MgFe2O4@C nanofibers with a carbon thickness of 7 nm exhibited an excellent cycling performance and rate capability compared with pristine MgFe2O4 and MgFe2O4@C nanofibers with carbon thicknesses of 4 and 15 nm, respectively. These nanofibers delivered high initial discharge and charge capacities of 1383 and 1044 mAh g−1, respectively, with a Coulombic efficiency of 75.5 %. A reversible capacity of 926 mAh g−1 could be obtained after 200 cycles at 0.1 Ag−1. Even at a high rate of 1 A g−1 after 500 cycles, they still maintained a stable capacity of 610 mAh g−1 with a capacity retention of 81.9 %. Therefore, the MgFe2O4@C nanofibers are a potential anode candidate for LIBs.

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“…0.70 V in the 1st discharge curve disappear during the subsequent cycles (Figure S5), which can result from the generation of stable SEI layers . When the 2nd cycle is compared with the following ones (10th‐150th), it can be obviously observed that after intense cycles, a slope at 0.60‐1.20 V of the discharge curves and another one at 1.5‐2.1 V of the charge curves appear and gradually enhance with the cycles increasing, which can be explained by the reduction reaction of Mn 4+ to Mn 2+ and the corresponding reverse one, respectively . The cyclic performance of NC@MnO HHSs, MnO nanoparticles (Figure S6) and NHCSs at 0.1 Ag −1 is shown in Figure c.…”

Section: Resultsmentioning

confidence: 91%

“…XPS has been utilized to investigate the surface chemical state of NC@MnO HHSs (Figure c). The N1s spectrum can be deconvoluted into three evident peaks of 402.9, 400.3 and 398.1 eV, which represent graphitic N, pyrrolic N and pyridinic N (Figure d), respectively. The N‐doping of carbon hollow spheres can form the defect and offer more active sites for the fast Li + absorption and diffusion, resulting in high electrical conductivity and outstanding rate capability .…”

Section: Resultsmentioning

confidence: 99%

Highly Reversible Lithium Storage of Nitrogen‐Doped Carbon@MnO Hierarchical Hollow Spheres as Advanced Anode Materials

et al. 2019

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The practical implementation of MnO‐based anode materials is still obstructed because of their short cyclic life and unsatisfactory rate performance, attributable to low conductivity, large volume variation and self‐aggregation of MnO during intense cycles. To overcome these obstacles, we successfully fabricated nitrogen‐doped carbon@MnO hierarchical hollow spheres through a novel approach. As anode nanomaterials for Li‐ion batteries, the nanocomposite possesses a highly reversible capacity of 1302 mAh g−1 after the 200th cycle at 0.1 Ag−1 and 964 mAh g−1 after the 500th cycle at 0.5 Ag−1, respectively. The prominent electrochemical performances of the nanocomposite may result from synthetic effects of nitrogen‐doped carbon hollow structures, nanosized MnO and the gradual generation of high‐oxide‐state manganese oxide on nitrogen‐doped carbon hollow spheres during intensive cycles. The aforementioned results also demonstrate that MnO nanocrystals can be well utilized by attaching to nitrogen‐doped carbon hollow spheres, which is a valid way to achieve excellent lithium storage properties for transition metal oxides.

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A peapod-inspired MnO@C core-shell design for lithium ion batteries

Cited by 93 publications

References 28 publications

3D Hierarchical Microballs Constructed by Intertwined MnO@N‐doped Carbon Nanofibers towards Superior Lithium‐Storage Properties

3D Hierarchical Microballs Constructed by Intertwined MnO@N‐doped Carbon Nanofibers towards Superior Lithium‐Storage Properties

Carbon‐Coated Magnesium Ferrite Nanofibers for Lithium‐Ion Battery Anodes with Enhanced Cycling Performance

Highly Reversible Lithium Storage of Nitrogen‐Doped Carbon@MnO Hierarchical Hollow Spheres as Advanced Anode Materials

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