Engineering a hierarchical hollow hematite nanostructure for lithium storage

Ye, Fei; Yun-cheng, HU; Zhao, Yong; Zhu, Donghui; Wang, Yonggui; Pu, M.H.; Mao, Samuel S.

doi:10.1039/c6ta05409a

Cited by 13 publications

(4 citation statements)

References 36 publications

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“…Figure 5a shows the first five CV curves of the Fe 2 O 3 @3DG-150 at a scan rate of 0.1 mV s −1 in the voltage window of 0.01-3.0 V. In the initial cathodic process, the presence of the peak at 1.55 V indicates that the irreversible conversion between Li + and Fe 2 O 3 leads to the formation of a solid electrolyte-interphase (SEI) layer [39]. Another apparent characteristic peak at 0.65 V was attributed to the formation of irreversible Li x Fe 2 O 3 (Fe 2 O 3 + Li + + e − → Li x Fe 2 O 3 ) [40].…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Temperature-Driven Synthesis of 1D Fe2O3@3D Graphene Composite Applies as Anode of Lithium-Ion Batteries

Zhu

et al. 2023

Inorganics

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A series of Fe2O3-anchored three-dimensional graphene (3DG) composites are synthesized via hydrothermal and annealing methods. The Fe2O3 nanocrystals in composites display nanocubes, one-dimensional (1D) nanorods and ellipsoids at hydrothermal temperatures of 120 °C, 150 °C and 180 °C, respectively. Notably, the composite synthesized at 150 °C shows 1D Fe2O3 uniformly embedded in 3DG, forming an interpenetrating 1D-3D (three-dimensional) structure. This combined structure is beneficial in improving the electrochemical stability and accelerating the Li+ diffusion rate. When used as anode for lithium-ion batteries (LIBs), the optimized 1D-3D Fe2O3@3DG composite delivers a reversible specific capacity of 1041 mAh g−1 at 0.1 A g−1 and maintains a high reversible specific capacity of 775 mAh g−1 after 200 cycles. The superior electrochemical properties of Fe2O3@3DG are a result of the stable interpenetrate structure, enhanced conductivity, and buffered volume change. These results suggest that Fe2O3@3DG composites have significant potential as advanced anode materials for LIBs and the combined 1D-3D structure also provides inspiration for other electrode material structure design.

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Temperature-Driven Synthesis of 1D Fe2O3@3D Graphene Composite Applies as Anode of Lithium-Ion Batteries

Zhu

et al. 2023

Inorganics

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“…For instance, Mao et al reported that constructing hierarchical α-Fe 2 O 3 nanospheres with hollow interiors could not only efficiently enhance electroconductivity but also tailor the properties of Li + ion storage, achieving satisfactory long-term cycling stability of retaining a reversible capacity of 965 mA h g −1 beyond 200 cycles. 27 Such a high capacity for Li-ion storage was far superior to that of the commercial graphite material with the theoretical value of 372 mA h g −1 . 28 As shown in Fig.…”

Section: Introductionmentioning

confidence: 96%

Advanced hematite nanomaterials for newly emerging applications

Wan

Liu

et al. 2023

Chem. Sci.

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“…[5] To find better alternatives to graphite, researchers have investigated many new anode materials with higher capacity, including metal, metal oxides, metal sulfides, metal nitrides. [6][7][8][9][10][11] Among all kinds of anode materials, transition metal oxides and hydroxides, especially cobalt based compounds, due to the high lithium storage capacity, as well as natural abundance and environmental DOI: 10.1002/crat.202100133 friendliness have attracted much attention as promising alternative anode materials. [12,13] However, there are some problems in metal oxides and hydroxides as anodes for LIBs.…”

Section: Introductionmentioning

confidence: 99%

Formation of Hierarchical Cobalt Hydroxychloride Nanostructures with Enhanced Performance for Lithium‐Ion Batteries

Wang

Liang

et al. 2021

Crystal Research and Technology

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Layered metal hydroxide salts have attracted considerable attention in various applications due to their superior photoelectric, physical, and chemical properties. Here, a simple in situ growth hydrothermal approach is reported to prepare hierarchical cobalt hydrochloride (Co 2 (OH) 3 Cl) microspheres composed of octahedron-like subunits. Based on the multiple functional triethanolamine and time-dependent morphology evolution, the formation of the unique sphere structures can be elucidated by a hierarchical self-assembly of anisotropic nanoparticles. When used as lithium ion battery (LIB) anodes, this Co 2 (OH) 3 Cl microsphere shows very large reversible specific capacity (1196 mA h g -1 at 0.2 A g -1 ), excellent rate capability (720.4 mA h g −1 at 4.0 A g −1 ), and long-life stability (802 mA h g -1 with 81.1% retention after 500 cycle tests at 4.0 A g -1 ). The excellent electrochemical performance is attributed to the improvement of electrical conductivity and fast ionic diffusion in the electrode by improving the microarchitecture and functionally introducing Cl -.

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Engineering a hierarchical hollow hematite nanostructure for lithium storage

Cited by 13 publications

References 36 publications

Temperature-Driven Synthesis of 1D Fe2O3@3D Graphene Composite Applies as Anode of Lithium-Ion Batteries

Temperature-Driven Synthesis of 1D Fe2O3@3D Graphene Composite Applies as Anode of Lithium-Ion Batteries

Advanced hematite nanomaterials for newly emerging applications

Formation of Hierarchical Cobalt Hydroxychloride Nanostructures with Enhanced Performance for Lithium‐Ion Batteries

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