Ultrafast Li-ion battery anode with superlong life and excellent cycling stability from strongly coupled ZnO nanoparticle/conductive nanocarbon skeleton hybrid materials

Yang, Gongzheng; Song, Huawei; Cui, Hao; Liu, Yichun; Wang, C.X.

doi:10.1016/j.nanoen.2013.06.013

Cited by 94 publications

(45 citation statements)

References 34 publications

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“…Previous studies on the reaction mechanism between Li and ZnO are informative. [30][31][32][33][34][35] Upon lithiation, ZnO undergoes a two-step reaction. Li first converts the oxide into metallic Zn, leaving Zn nanoparticles dispersed in the amorphous matrix of Li 2 O and Li-Zn-O alloys.…”

Section: In-situ Experimentsmentioning

confidence: 99%

Lithiation of ZnO nanowires studied by in-situ transmission electron microscopy and theoretical analysis

Zhang

Wang

et al. 2015

Mechanics of Materials

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Section: In-situ Experimentsmentioning

confidence: 99%

Lithiation of ZnO nanowires studied by in-situ transmission electron microscopy and theoretical analysis

Zhang

Wang

et al. 2015

Mechanics of Materials

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“…So naturally, the optimum design of an elastic medium in accommodating the volume expansion is the key to addressing these issues. 6,7 Ternary metal oxides, that demonstrate superior electrochemical performances than single-phase oxides, have been widely studied as candidates for lithium ion anode materials. 8 -13 For the ternary metal oxides upon cycling, the reaction usually entails a lithium-driven conversion process in the first cycle, resulting in the formation of an active metal oxide electrode embedded in another amorphous metal oxide matrix which can effectively buffer volume changes and consequently improve cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Zinc pyrovanadate nanosheets of atomic thickness: excellent Li-storage properties and investigation of their electrochemical mechanism

Yang

et al. 2016

J. Mater. Chem. A

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Exploring ternary metal oxides that can in situ form an elastic medium to accommodate the volume changes upon lithium intercalation is now a popular and effective way to achieve high-performance lithium ion battery with enhanced cycling stability. Herein, we report an ultrathin zinc pyrovanadate nanosheet of atomic thickness with exposed (001) facets via a facile hydrothermal method. Morphological and structural evolutions of the zinc pyrovanadate are investigated to reveal the electrochemical reaction mechanism of this compound towards lithium ions intercalations for the first time. It is found that the initial zinc pyrovanadate transform into ZnO nanoparticles and LiV 2 O 5 in the first cycle, and the subsequent reaction mainly occurs between ZnO and LiZn and lithiation/delithiation of the lithium vanadate. Interestingly, the in situ formed lithiated vanadate matrix could serve as a conductive network for reversible electrochemical process of ZnO. The ultrathin thickness is in favour of shortening pathway for lithium ions, while the specific exposed facets are facilitated to form the architecture of ZnO nanoparitcles embedded in amorphous lithiated vanadate matrix owing to the sandwich-like skeleton of zinc pyrovanadate that is constructed from the layer-by-layer stacking of the [ZnO 6 ] and [V 2 O 7 ] polyhedra chains projected along the c axis. Benefits from these inspiring merits, the as-synthesized ultrathin zinc pyrovanadate nanosheet exhibits a high specific capacity (963 mAh/g at 0.05 A/g), outstanding rate capability (344 mAh/g at 10 A/g), and long cycle life (602 mAh/g could be maintained after 980 cycles at 1 A/g), and is regarded as a promising candidate of lithium ion battery anode material.

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“…For instance, ZnO quantum dots coated with hierarchically porous carbon can efficiently suppress the aggregation, rendering an impressive cycling performance with nearly 100% capacity retention after 50 cycles [14]. Wang and coworkers reported a uniform dispersion of ZnO nanoparticles ($10 nm diameter) into a porous carbon bubble host, greatly inhibiting aggregation of ZnO, accompanying with the enhanced rate capability with capacity up to 190 mAh g À1 at a current density of 49 A g À1 [15]. Furthermore, graphene has been introduced to combine with ZnO quantum dots with controllable sizes ranging from 2 to 7 nm, greatly mitigating the severe capacity fade of ZnO, which can be ascribed to the excellent mechanical properties of graphene and the ultra-small ZnO quantum dots [13].…”

Section: Introductionmentioning

confidence: 99%

ZnO decorated TiO2 nanosheet composites for lithium ion battery

Gao

Huang

et al. 2015

Electrochimica Acta

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Ultrafast Li-ion battery anode with superlong life and excellent cycling stability from strongly coupled ZnO nanoparticle/conductive nanocarbon skeleton hybrid materials

Cited by 94 publications

References 34 publications

Lithiation of ZnO nanowires studied by in-situ transmission electron microscopy and theoretical analysis

Lithiation of ZnO nanowires studied by in-situ transmission electron microscopy and theoretical analysis

Zinc pyrovanadate nanosheets of atomic thickness: excellent Li-storage properties and investigation of their electrochemical mechanism

ZnO decorated TiO2 nanosheet composites for lithium ion battery

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