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| 1 | 纳米结构的多孔球形NiO@NiMoO4@PPy作为先进的电化学赝电容器材料显示文摘构建了一种PPy缠绕的多孔球形NiO@NiMoO4材料,并应用于高性能的超级电容器.结果表明,NiO改性改变了NiMoO4的形貌,NiO@NiMoO4和NiO@NiMoO4@PPy均呈现一种内部中空和外壳多孔的形貌,并具有较大的比表面积,进而促进了离子和电荷的转移.NiMoO4和PPy壳具有较高的电子电导率,降低了NiO的电荷转移电阻,进而提高了其电化学动力学性能.在电流密度为20A/g时,NiO,NiMoO4,NiO@NiMoO4和NiO@NiMoO4@PPy电极的初始放电比电容分别为456.0,803.2,764.4和941.6F/g.在电流密度增大至30A/g时,NiO@NiMoO4@PPy电极的初始放电比电容为850.2F/g,30000次循环后比电容仍达到655.2F/g,电容保有率为77.1%.第一性原理计算结果表明,更强的Mo–O有利于稳定NiO@NiMoO4复物的结构,进而提高了其循环稳定性. | 伊廷锋 仇立英 梅杰 齐思雨 崔平 罗绍华 朱彦荣 谢颖 贺艳兵 | 2020 | Science Bulletin2020，65，7： | 3 |
| 2 | High energy superstable hybrid capacitor with a self-regulated Zn/electrolyte interface and 3D graphene-like carbon cathode显示文摘Rechargeable aqueous zinc ion hybrid capacitors(ZIHCs),as an up-and-comer aqueous electrochemical energy storage system,endure in their infancy because of the substandard reversibility of Zn anodes,structural deterioration of cathode materials,and narrow electrochemical stability window.Herein,a scalable approach is described that addresses Zn-anode/electrolyte interface and cathode materials associated deficiencies and boosts the electrochemical properties of ZIHCs.The Zn-anode/electrolyte interface is self-regulated by alteration of the traditional Zn2+electrolyte with Na-based supporting salt without surrendering the cost,safety,and green features of the Zn-based system which further validates the excellent reversibility over 1100 h with suppressed hydrogen evolution.The deficits of cathode materials were overcome by using a high-mass loaded,oxygen-rich,3D,multiscaled graphene-like carbon(3D MGC)cathode.Due to the multiscaled texture,high electronic conductivity,and oxygen-rich functional groups of 3D MGC,reversible redox capacitance was obtained with a traditional adsorption/desorption mechanism.Prototype ZIHCs containing the modified electrolyte and an oxygen-rich 3D MGC cathode resulted in battery-like specific energy(203 Wh kg1 at 1.6 A g^(-1))and supercapacitor-type power capability(4.9 kW kg1 at 8 A g^(-1))with outstanding cycling durability(96.75%retention over 30000 cycles at 10 A g^(-1)).These findings pave the way toward the utilization of highly efficient ZIHCs for practical applications. | Nilesh R.Chodankar Swati J.Patil Sangjin Lee Jaeho Lee Seung-Kyu Hwang Pragati A.Shinde Indrajit V.Bagal Smita V.Karekar Ganji Seeta Rama Raju Kugalur Shanmugam Ranjith Deepak P.Dubal Yun-Suk Huh Young-Kyu Han | 2022 | InfoMat2022，4，10： | 0 |
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