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1Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries显示文摘Electrochemical energy storage devices(EESs)play a crucial role for the construction of sustainable energy storage system from the point of generation to the end user due to the intermittent nature of renewable sources.Additionally,to meet the demand for next-generation electronic applications,optimizing the energy and power densities of EESs with long cycle life is the crucial factor.Great e orts have been devoted towards the search for new materials,to augment the overall performance of the EESs.Although there are a lot of ongoing researches in this field,the performance does not meet up to the level of commercialization.A further understanding of the charge storage mechanism and development of new electrode materials are highly required.The present review explains the overview of recent progress in supercapattery devices with reference to their various aspects.The di erent charge storage mechanisms and the multiple factors involved in the performance of the supercapattery are described in detail.Moreover,recent advancements in this supercapattery research and its electrochemical performances are reviewed.Finally,the challenges and possible future developments in this field are summarized.Saravanakumar Balasubramaniam Ankita Mohanty Suresh Kannan Balasingam Sang Jae Kim Ananthakumar Ramadoss 2020Nano-Micro Letters2020,12,7:1
2In situ growth of hydrophilic nickel-cobalt layered double hydroxides nanosheets on biomass waste-derived porous carbon for high-performance hybrid supercapacitors显示文摘Rational design and cost-effective fabrication of layered double hydroxides(LDHs)nanosheets with extraordinary electrochemical performance is a key challenge for hybrid supercapacitors(HSCs).Herein,we report a facile in situ growth methodology to eco-friendly synthesize hydrophilic Ni Co-LDHs nanosheets on biomass waste-derived porous carbon(BC)for robust high-performance HSC cathode.The in situ growth process under ultrasonication realizes the rational arrangement of Ni Co-LDHs nanosheets on the surface of BC,which effectively increases the specific surface area,promotes the electronic conductivity and enhances the wettability of Ni Co-LDHs nanosheets without affecting their thickness values.With the beneficial effects of ultrathin thickness of LDHs nanosheets(6.20 nm),large specific surface area(2324.1 m^(2)g^(-1)),low charge transfer resistance(1.65Ω),and high wettability with electrolyte(34°–35°),the obtained Ni2Co1-LDHs/BC50 electrode possesses an ultra-high specific capacitance of 2390 F g^(-1)(956 C g^(-1))at 1 A g^(-1),which is superior to most reported values.Furthermore,an assembled Ni_(2)Co_(1)-LDHs/BC50//YP-80F HSC delivers a maximum specific energy of 52.47 Wh kg^(-1)at375 W kg^(-1),and maintains a high capacitance retention of 75.9%even after 4000 cycles.This work provides a facile approach to fabricate LDHs nanosheets based cathode materials for high-performance HSCs.Yuchen Wang Yaoyu Liu Zuo Chen Man Zhang Biying Liu Zhenhao Xu Kai Yan 2022Green Chemical Engineering2022,3,1:1
3电沉积制备镍钴电极材料的研究进展显示文摘综述电沉积法制备镍钴电极材料的研究现状,主要包括电沉积法制备镍钴氢氧化物和镍钴氧化物。阐明与单一的镍或钴氢氧化物相比,镍钴氢氧化物材料具有更高的比电容,使用金属与碳材料进行改性,可以增强循环稳定性。介绍使用电沉积法制备镍钴氧化物的基本步骤(前驱体的制备和热处理),重点阐述用不同的电沉积方法制备前驱体,比较各种方法的优缺点;对热处理的相关研究进行总结。指出镍钴电极材料的研究向多元复合方向发展。张勇 杨净 闫新华 高海丽 2021电池2021,51,3:0
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