Three-dimensional graphene sheets with NiO nanobelt outgrowths for enhanced capacity and long term high rate cycling Li-ion battery anode material

Shi, Waipeng; Zhang, Yingmeng; Key, Julian; Shen, Pei Kang

doi:10.1016/j.jpowsour.2018.01.025

Cited by 53 publications

(29 citation statements)

References 46 publications

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“…c) Electrochemical impedance spectra of the NiO@NiO/NF‐600 electrode after different cycles and the inset is an equivalent electrical circuit. d) Comparison of the electrochemical properties of NiO@NiO/NF‐600 in this work with CNTs/NiO, NiO/C, NiO/3DGS, NiO@C/pRGO, NiO‐400, Ni/NiO/C, and NiO/GQDs‐COOH reported in recent literatures. e) The NiO@NiO/NF‐600 powering various colored LEDs.…”

Section: Resultsmentioning

confidence: 99%

Carbon/Binder‐Free NiO@NiO/NF with In Situ Formed Interlayer for High‐Areal‐Capacity Lithium Storage

Shi

Wang

et al. 2019

Advanced Energy Materials

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Achieving high areal capacity is a challenge for current lithium‐ion batteries (LIBs). To address this issue, nickel foam (NF), as a free‐standing skeleton suffers from long‐term poor anchor ability for active materials, resulting in detachment from conductive substrates. In addition, the weighty NF damages the overall energy density of the electrode. Herein, an in situ fabrication of interlayer strategy is proposed to effectively address these issues through constructing layer‐by‐layer a 3D structure composed of an inner conductive framework, medial NiO layer, and outer few‐layer NiO nanoflowers in turn (NiO@NiO/NF). The interlayer derived from partial oxidation of NF not only reinforces the attachment of the active layer on NF but also contributes capacity to the whole electrode, leading to excellent stability and areal capacity. When used as the anode of LIBs, ultrahigh reversible capacity of 1.98 mAh cm−2 is delivered at 1.20 mA cm−2. The electrode still maintains good integrity and flexibility after 1000 cycles, showing good structure stability. Compared with previous reports, NiO@NiO/NF is one of the most outstanding NiO‐based electrodes. This work proposes a feasible strategy to enhance the capacity and stability of self‐supporting electrodes, and opens a new avenue for high‐areal‐capacity anode of LIBs.

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Section: Resultsmentioning

confidence: 99%

Carbon/Binder‐Free NiO@NiO/NF with In Situ Formed Interlayer for High‐Areal‐Capacity Lithium Storage

Shi

Wang

et al. 2019

Advanced Energy Materials

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“…The two cathodic peaks in the subsequent scan are moved to 0.75 V and 1.5 V because of the modification of the microstructure and the electrolyte decomposition [ 51 ]. Moreover, the CV curves of the second and the third cycles are overlapped, suggesting good reversible electrochemical reactions [ 4 , 38 ].…”

Section: Resultsmentioning

confidence: 99%

“…Lithium-ion batteries (LIBs) occupy important status in the automotive and portable electronic devices such as wearable microelectronic devices and electric transportation on account of their outstanding properties. In the past years, considerable studies have been proposed around the promising battery anode materials [ 1 , 2 , 3 , 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Nickel-Embedded Carbon Materials Derived from Wheat Flour for Li-Ion Storage

Wen

et al. 2020

Materials

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The biomass-based carbons anode materials have drawn significant attention because of admirable electrochemical performance on account of their nontoxicity and abundance resources. Herein, a novel type of nickel-embedded carbon material (nickel@carbon) is prepared by carbonizing the dough which is synthesized by mixing wheat flour and nickel nitrate as anode material in lithium-ion batteries. In the course of the carbonization process, the wheat flour is employed as a carbon precursor, while the nickel nitrate is introduced as both a graphitization catalyst and a pore-forming agent. The in situ formed Ni nanoparticles play a crucial role in catalyzing graphitization and regulating the carbon nanocrystalline structure. Mainly owing to the graphite-like carbon microcrystalline structure and the microporosity structure, the NC-600 sample exhibits a favorable reversible capacity (700.8 mAh g−1 at 0.1 A g−1 after 200 cycles), good rate performance (51.3 mAh g−1 at 20 A g−1), and long-cycling durability (257.25 mAh g−1 at 1 A g−1 after 800 cycles). Hence, this work proposes a promising inexpensive and highly sustainable biomass-based carbon anode material with superior electrochemical properties in LIBs.

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“…Forming composites usually produces better conductivity and structural stability. During the past decade, various nanostructures have been designed for active materials such as low-dimensional [9,10], porous [11,12], spherical [13][14][15][16], hollow [17,18], core/shell [19], yolk/shell [20,21], and so on, meanwhile, conductive ductile matrices such as metal [22,23] and/or carbon [24][25][26] have been introduced to fabricate nanocomposites. It is known from these examples that many novel-structured nanocomposites show significantly enhanced electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

NiO/Carbon Aerogel Microspheres with Plum-Pudding Structure as Anode Materials for Lithium Ion Batteries

et al. 2020

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To enhance the electrochemical performance of nickel oxide as anode materials for lithium ion batteries, NiO/carbon aerogel microspheres with a plum-pudding structure were designed and prepared by a sol-gel technique followed by two calcination processes under different atmospheres. Carbon aerogel microspheres (pudding) can act as a buffering and conductive matrix to enhance the structural stability and conductivity of the embedded NiO particles (plums), which are quite advantageous to the cycling performance and rate capability. Consequently, NiO/carbon aerogel microspheres with a plum-pudding structure deliver an initial charge capacity of 808 mAh g−1 and a reversible capacity retention of 85% after 100 cycles. The enhancement in electrochemical performance relative to pure NiO microspheres suggests that the design of a plum-pudding structure is quite effective.

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Three-dimensional graphene sheets with NiO nanobelt outgrowths for enhanced capacity and long term high rate cycling Li-ion battery anode material

Cited by 53 publications

References 46 publications

Carbon/Binder‐Free NiO@NiO/NF with In Situ Formed Interlayer for High‐Areal‐Capacity Lithium Storage

Carbon/Binder‐Free NiO@NiO/NF with In Situ Formed Interlayer for High‐Areal‐Capacity Lithium Storage

Nickel-Embedded Carbon Materials Derived from Wheat Flour for Li-Ion Storage

NiO/Carbon Aerogel Microspheres with Plum-Pudding Structure as Anode Materials for Lithium Ion Batteries

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