Enhanced Cycling Stability of Lithium‐Ion Batteries Using Graphene‐Wrapped Fe<sub>3</sub>O<sub>4</sub>‐Graphene Nanoribbons as Anode Materials

Li, Lei; Kovalchuk, Anton; Fei, Huilong; Peng, Zhiwei; Li, Yilun; Kim, Nam Dong; Xiang, Changsheng; Yang, Yang; Ruan, Gedeng; Tour, James M.

doi:10.1002/aenm.201500171

Cited by 141 publications

(93 citation statements)

References 46 publications

(110 reference statements)

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“…The rate performance of the current PPy-coated hierarchical nanocages is compared with those of recently reported Fe 3 O 4 -based anodes for Li-ion batteries (Table S1, Supporting Information), including bare Fe 3 O 4 nanoparticles, bare Fe 3 O 4 nanocages and pure PPy nanocages ( Figures S6 and S7, Supporting Information), Fe 3 O 4 hierarchical hollow microspheres, [17] Fe 3 O 4 @C yolk-shell nanospheres, [16] Fe 3 O 4 @C hollow and solid nanospindles, [13,15] Fe 3 O 4 /graphene nanocomposites. [8,[10][11][12] It is obvious that the rate capability of the current hierarchical and is comparable to just recently reported uniform Fe 3 O 4 @C yolk-shell nanocubes. [9] For directly proving the superior structure stability of these PPy-coated Fe 3 O 4 hierarchical nanocages, SEM observation after 100 cycles at 200 mA g −1 was also carried out, with the 3D hollow cubic morphology being well retained ( Figure S5, Supporting Information).…”

Section: Doi: 101002/aenm201600256supporting

confidence: 86%

Uniform Hierarchical Fe₃O₄@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Liu

Xu²,

et al. 2016

Advanced Energy Materials

201

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Section: Doi: 101002/aenm201600256supporting

confidence: 86%

Uniform Hierarchical Fe₃O₄@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Liu

Xu²,

et al. 2016

Advanced Energy Materials

201

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“…[1][2][3][4][5][6][7][8][9] To meet the increasing requirements for high-performance LIBs, intensive efforts have been devoted for superior electrode materials by replacing conventional graphite with transition metal oxides (TMOs), such as Fe 3 O 4 , Mn 3 O 4 , NiO, and ZnO. [16][17][18][19][20][21][22][23] However, they suffer from poor cyclability and low rate capacity, which are caused by the drastic volume change during the charge-discharge cycling and low electric conductivity. [16][17][18][19][20][21][22][23] However, they suffer from poor cyclability and low rate capacity, which are caused by the drastic volume change during the charge-discharge cycling and low electric conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29][30][31] Even through the volume changes may be effectively controlled by flexible substrates, this strategy is still limi ted in improving specific capacity and rate performance. [27][28][29][30][31] Even through the volume changes may be effectively controlled by flexible substrates, this strategy is still limi ted in improving specific capacity and rate performance.…”

mentioning

confidence: 99%

Uniform Pomegranate‐Like Nanoclusters Organized by Ultrafine Transition Metal Oxide@Nitrogen‐Doped Carbon Subunits with Enhanced Lithium Storage Properties

Liu

Zhang

Jin

et al. 2017

Advanced Energy Materials

104

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Recently, adopting carbon coating has drawn considerable attention for increasing the electrical conductivity and enhancing the stability of the electrode materials as elastic buffer supports upon cycling to improve the electrochemical performance. [27][28][29][30][31] Even through the volume changes may be effectively controlled by flexible substrates, this strategy is still limi ted in improving specific capacity and rate performance. Nanoengineering of ultrafine nanostructure (ultrafine nanoparticles or ultrafine nanosized subunits) has become the most powerful mean to tackle above challenge because they can increase the electrodeelectrolyte contact area, lower the absolute volume change, and shorten the distance for lithium-ion diffusion within the particles. [32,33] For instance, 3D mesoporous Co 3 O 4 networks composed of small Co 3 O 4 nanoparticles (5-10 nm) synthesized by Naiqin Zhao exhibit high specific capacity (1033 mA h g −1 at 0.1 A g −1 ) and remarkable rate capability. [34] Furthermore, robust and favorable ultrafine secondary nanoparticles would effectively accommodate the severe volume variation upon cycling and prevent self-aggregation of the ultrafine nanoscale subunits, thus leading to improved capacity retention and rate capability. For example, polydopamine-coated SnO 2 nanocrystals comprising SnO 2 nanoparticles (diameter ≈ 5 nm) developed by Lin and co-workers display excellent rate capability. [35] Nevertheless, the existing synthetic methods can only fabricate the ultrafine nanoparticles with exposed or mosaic structure which have disadvantages of inevitable aggregation and unstable nanostructure during long-term cycling; moreover, they are unsuitable for large-scale production. Hence, it is a great challenge to design and synthesize ultrafine carbon coating TMO subunit through a facile and one-pot method on a large scale.Along these lines, we develop a facile and novel one-pot approach for the first time to synthesize a series of highly uniform pomegranate-like TMO@nitrogen-doped carbon nanoclusters (TMO@N-C NCs) with a large scale production, which are organized by numerous of ultrafine TMO@N-C subunits (diameter ≈ 4 nm). This approach has been demonstrated to synthesize various pomegranate-like TMO@N-C NCs, including simple oxides such as Fe 3 O 4 , Mn 3 O 4 , NiO, and ZnO. Taking pomegranate-like Fe 3 O 4 @N-C NCs as an example, the pomegranate-like Fe 3 O 4 @N-C NCs with this unique nanostructure show excellent cycle stability and superior rate capacity Uniform pomegranate-like nanoclusters (NCs) organized by ultrafine transition metal oxide@nitrogen-doped carbon (TMO@N-C) subunits (diameter ≈ 4 nm) are prepared on a large scale for the first time through a facile, novel, and one-pot approach. Taking pomegranate-like Fe 3 O 4 @N-C NCs as an example, this unique structure provides short Li + /electron diffusion pathways for electrochemical reactions, structural stability during cycling, and high electrical conductivity, leading to superior electrochemical performance. The resulting...

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“…To overcome these issues, one promising approach is to choose a carbonaceous material of high electrical conductivity and fair ductility as an effective matrix to support, disperse, or encapsulate the nanostructured MTMOs, which could buffer large volume expansion and contraction during cycling, while inhibiting agglomeration and enhancing conductivity . Because of its superior electrical conductivity, excellent mechanical flexibility, large surface area, and high thermal and chemical stability, graphene is regarded as one of the most appealing matrices in composite materials combined with TMO nanostructures and exhibits exceptional performance in LIBs .…”

Section: Introductionmentioning

confidence: 99%

Graphene‐Encapsulated Nanosheet‐Assembled Zinc–Nickel–Cobalt Oxide Microspheres for Enhanced Lithium Storage

et al. 2015

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The appropriate combination of hierarchical transition-metal oxide (TMO) micro-/nanostructures constructed from porous nanobuilding blocks with graphene sheets (GNS) in a core/shell geometry is highly desirable for high-performance lithium-ion batteries (LIBs). A facile and scalable process for the fabrication of 3D hierarchical porous zinc-nickel-cobalt oxide (ZNCO) microspheres constructed from porous ultrathin nanosheets encapsulated by GNS to form a core/shell geometry is reported for improved electrochemical performance of the TMOs as an anode in LIBs. By virtue of their intriguing structural features, the produced ZNCO/GNS core/shell hybrids exhibit an outstanding reversible capacity of 1015 mA h g(-1) at 0.1 C after 50 cycles. Even at a high rate of 1 C, a stable capacity as high as 420 mA h g(-1) could be maintained after 900 cycles, which suggested their great potential as efficient electrodes for high-performance LIBs.

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Enhanced Cycling Stability of Lithium‐Ion Batteries Using Graphene‐Wrapped Fe₃O₄‐Graphene Nanoribbons as Anode Materials

Cited by 141 publications

References 46 publications

Uniform Hierarchical Fe₃O₄@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Uniform Hierarchical Fe₃O₄@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Uniform Pomegranate‐Like Nanoclusters Organized by Ultrafine Transition Metal Oxide@Nitrogen‐Doped Carbon Subunits with Enhanced Lithium Storage Properties

Graphene‐Encapsulated Nanosheet‐Assembled Zinc–Nickel–Cobalt Oxide Microspheres for Enhanced Lithium Storage

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Enhanced Cycling Stability of Lithium‐Ion Batteries Using Graphene‐Wrapped Fe3O4‐Graphene Nanoribbons as Anode Materials

Cited by 141 publications

References 46 publications

Uniform Hierarchical Fe3O4@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Uniform Hierarchical Fe3O4@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Uniform Pomegranate‐Like Nanoclusters Organized by Ultrafine Transition Metal Oxide@Nitrogen‐Doped Carbon Subunits with Enhanced Lithium Storage Properties

Graphene‐Encapsulated Nanosheet‐Assembled Zinc–Nickel–Cobalt Oxide Microspheres for Enhanced Lithium Storage

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Enhanced Cycling Stability of Lithium‐Ion Batteries Using Graphene‐Wrapped Fe₃O₄‐Graphene Nanoribbons as Anode Materials

Uniform Hierarchical Fe₃O₄@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes

Uniform Hierarchical Fe₃O₄@Polypyrrole Nanocages for Superior Lithium Ion Battery Anodes