Organic 3D interconnected graphene aerogel as cathode materials for high-performance aqueous zinc ion battery  

作　　者：Ruibai Cang Ke Ye Kai Zhu Jun Yan Jinling Yin Kui Cheng Guiling Wang Dianxue Cao 

机构地区：[1]Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China

出　　处：《Journal of Energy Chemistry》2020年第6期52-58,I0003,共8页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(51672056);Excellent Youth Project of Natural Science Foundation of Heilongjiang Province of China(YQ2019B002);China Postdoctoral Science Foundation(2018M630307 and 2019T120220);Fundamental Research Funds for the Central Universities(HEUCFD201732)。

摘　　要：Aqueous rechargeable zinc ion batteries are very attractive in large-scale storage applications,because they have high safety,low cost and good durability.Nonetheless,their advancements are hindered by a dearth of positive host materials(cathode)due to sluggish diffusion of Zn2+in the solid inorganic frameworks.Here,we report a novel organic electrode material of poly 3,4,9,10-perylentetracarboxylic dianhydride(PPTCDA)/graphene aerogel(GA).The 3D interconnected porous architecture synthesized through a simple solvothermal reaction,where the PPTCDA is homogenously embedded in the GA nanosheets.The self-assembly of PPTCDA/GA coin-type cell will not only significantly improve the durability and extend lifetime of the devices,but also reduce the electronic waste and economic cost.The self-assembled structure does not require the auxiliary electrode and conductive agent to prepare the electrode material,which is a simple method for preparing the coin-type cell and a foundation for the next large-scale production.The PPTCDA/GA delivers a high capacity of≥200 m Ah g^–1 with the voltage of 0.0~1.5 V.After 300 cycles,the capacity retention rate still close to 100%.The discussion on the mechanism of Zn2+intercalation/deintercalation in the PPTCDA/GA electrode is explored by Fourier transform infrared spectrometer(FT-IR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS)characterizations.The morphology and structure of PPTCDA/GA are examined by scanning electron microscopy(SEM)and transmission electron microscopy(TEM).

关 键 词：AQUEOUS BATTERY Zinc ion BATTERY Poly 3 4 9 10-perylentetracarboxylic DIANHYDRIDE Graphene AEROGEL Cathode materials 

分 类 号：TM912[电气工程—电力电子与电力传动] O648.17[理学—物理化学]