<i>In situ</i> grown nickel selenide on graphene nanohybrid electrodes for high energy density asymmetric supercapacitors

Kirubasankar, Balakrishnan; Murugadoss, Vignesh; Lin, Jing; Ding, Tao; Dong, Mengyao; Liu, Hu; Zhang, Jiaoxia; Li, Tingxi; Wang, Ning; Guo, Zhanhu; Angaiah, Subramania

doi:10.1039/c8nr06345a

Cited by 343 publications

(108 citation statements)

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“…Recently, hybrid lithium‐ion capacitors (LICs) have emerged, which combines the merits of the two systems. LICs are constructed from a capacitor‐type electrode and a lithium ion battery‐type electrode . In this device, the capacitor‐type cathode usually has a relatively low energy density compared to battery‐type anode, therefore, it is highly necessary to develop an advanced cathode material with improved energy density.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Porous Activated Carbon Obtained by a Novel Heating‐Rate‐Induced Method for Lithium‐Ion Capacitor

Sun

Yang

et al. 2019

ChemistrySelect

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Lithium‐ion capacitor (LIC) is an advanced energy storage system due to the combination of high energy density and rapid charge–discharge capability. However, one of the challenges is to improve the specific capacitance and energy density of cathode at high power density. For activated carbon based cathode, the unique hierarchical porous structure and suitable graphitization are crucial for the improvement of the specific capacitance and energy density. Herein, a novel heating‐rate‐induced method is developed to prepare corncob‐derived activated carbons (C‐ACs) with high electrochemical performances. The as‐obtained C‐ACs possess large surface area (1154 m2 g−1), optimal hierarchical porous structure, and suitable graphitization. Particularly, optimal hierarchical porous structure contains not only the high energy storage of the micropores but also the high‐rate performance of the mesopores and macropores. The optimized C‐ACs‐8 electrode exhibits a specific capacitance of 158 F g−1 at 0.5 A g−1, exciting rate performance, and fast charge transfer capability. A lithium‐ion capacitor device based on C‐ACs‐8 cathode delivers a high energy density of 75 Wh kg−1 at power density of 562 W kg−1 and shows a long cycle life with 86.4% capacitance retention after 1000 cycles.

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Section: Introductionmentioning

confidence: 99%

Hierarchical Porous Activated Carbon Obtained by a Novel Heating‐Rate‐Induced Method for Lithium‐Ion Capacitor

Sun

Yang

et al. 2019

ChemistrySelect

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“…The intensity ratio of the two peaks ( I D / I G ) is considered as an indicator for the graphitization degree of carbon materials. In this work, the ratio close to 1 implies the low graphitization degree of the carbon yielded …”

Section: Resultsmentioning

confidence: 79%

Boosting the electrochemical performance of Li₄Ti₅O₁₂ through nitrogen‐doped carbon coating

Liu

Huang

et al. 2019

Applied Organom Chemis

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The poor electronic conductivity restricts the wide applications of Li4Ti5O12 as anode materials in Li‐ion batteries. We report a facile approach to fabricate nitrogen‐doped carbon‐coated Li4Ti5O12 through carbonizing pyrrole and pyridine at different temperatures. Comparative experiments demonstrated that the carbon content plays a key role in governing the cycling performance and rate capability of Li4Ti5O12. The composites with higher carbon content exhibited superior cycling performance, and the composite prepared at 600 °C using pyridine as the carbon source gave the best cycling and rate performance.

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“…Graphene is a good active composite material and the reduced graphene oxide (RGO) obtained by further thermal exfoliation has a unique charge‐transport ability, which can significantly improve the visible light catalysis . For example, Li et al .…”

Section: Photocatalysis Of Hydrotalcite‐derived Materials In Sewage Tmentioning

confidence: 99%

Research Progress in the Field of Adsorption and Catalytic Degradation of Sewage by Hydrotalcite‐Derived Materials

Pan

Tian

et al. 2019

The Chemical Record

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With the rapid development of industry and agriculture and the greatly improved living conditions, the resultant gradually deteriorated environments threaten the human beings. Refractory or even toxic pollutants, which are from different industries such as printing and dyeing, pesticides, chemicals, petrochemicals, plastics and rubber, seriously threat the ecosystems and human health. Having the advantages of flexible composition, unique structure, high stability, memory effect, easy preparation and low cost, hydrotalcite compounds have a great potential in sewage degradation and environmental protection. This study focuses on the adsorption and catalytic properties (such as photocatalysis, electrocatalysis and photoelectrocatalysis) of hydrotalcite-derived materials for treating organic, inorganic and heavy metal ion sewage. The types of adsorption and catalysis, and the effects of various influencing factors on the degradation efficiency were discussed as well.Wiley Online Library 355 Figure 13. The photoelectrocatalytic mechanism of organic pollutant MB over the ZNI-1-MMO-1.5 V photoelectrode.

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In situ grown nickel selenide on graphene nanohybrid electrodes for high energy density asymmetric supercapacitors

Abstract: A NiSe–G∥AC asymmetric supercapacitor with both pseudocapacitance and EDLC mechanisms provides an energy density of 50.1 W h kg−1 and a power density of 816 W kg−1.

Cited by 343 publications

References 83 publications

Hierarchical Porous Activated Carbon Obtained by a Novel Heating‐Rate‐Induced Method for Lithium‐Ion Capacitor

Hierarchical Porous Activated Carbon Obtained by a Novel Heating‐Rate‐Induced Method for Lithium‐Ion Capacitor

Boosting the electrochemical performance of Li₄Ti₅O₁₂ through nitrogen‐doped carbon coating

Research Progress in the Field of Adsorption and Catalytic Degradation of Sewage by Hydrotalcite‐Derived Materials

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In situ grown nickel selenide on graphene nanohybrid electrodes for high energy density asymmetric supercapacitors

Abstract: A NiSe–G∥AC asymmetric supercapacitor with both pseudocapacitance and EDLC mechanisms provides an energy density of 50.1 W h kg−1 and a power density of 816 W kg−1.

Cited by 343 publications

References 83 publications

Hierarchical Porous Activated Carbon Obtained by a Novel Heating‐Rate‐Induced Method for Lithium‐Ion Capacitor

Hierarchical Porous Activated Carbon Obtained by a Novel Heating‐Rate‐Induced Method for Lithium‐Ion Capacitor

Boosting the electrochemical performance of Li4Ti5O12 through nitrogen‐doped carbon coating

Research Progress in the Field of Adsorption and Catalytic Degradation of Sewage by Hydrotalcite‐Derived Materials

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Boosting the electrochemical performance of Li₄Ti₅O₁₂ through nitrogen‐doped carbon coating