2-羟基-1,4-萘醌石墨烯复合电极材料的制备及性能  

Preparation and properties of 2-hydroxy-1,4-naphthoquinone graphene composite electrode materials

作　　者：李姗姗 朱军 侯刚强 魏佳伟 胡中爱[2] LI Shan-shan;ZHU Jun;HOU Gang-qiang;WEI Jia-wei;HU Zhong-ai(College of Chemical Engineering,Lanzhou University of Arts and Sciences,Lanzhou 730000,Gansu,China;College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,Gansu,China)

机构地区：[1]兰州文理学院化工学院,甘肃兰州730000 [2]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2023年第6期76-86,共11页Journal of Northwest Normal University(Natural Science)

基　　金：2019年兰州文理学院校级科研杰出青年科研人才培育计划项目(2019JCQN03);兰州文理学院博士专项(2021SZZX10);国家自然科学基金资助项目(21163017,21563027,21773187);国家级大学生创新创业训练计划(202211562020,202211562021);省级大学生创新创业训练计划(S202211562028)。

摘　　要：通过非共价功能化策略,以还原氧化石墨烯(rGO)为导电基底,选择可逆电化学活性有机分子2-羟基-1,4-萘醌(HNQ)与rGO发生非共价π-π作用,设计制备了HNQ非共价功能化石墨烯复合电极材料(HNQ-rGO),并研究其实际储能性能.SEM,TEM,FT-IR,XRD和Raman光谱分析结果表明,通过氧化石墨(GO)的还原和rGO上HNQ分子的非共价修饰成功制备了HNQ-rGO.电流密度为1 A·g^(-1)时其比电容为321 F·g^(-1),并且在电流密度为5 A·g^(-1)时充放电循环10000次后,电容保持率仍为初始值的85.7%.另外,以2-羟基蒽醌还原氧化石墨烯(HAQ-rGO)为负极材料,HNQ-rGO为正极材料,设计的非对称超级电容器(HAQ-rGO//HNQ-rGO,ASC)在1.6 V池电压下,其功率密度、能量密度分别为0.8 k W·kg^(-1)和21.8 Wh·kg^(-1),说明该电容器储能性能优异.Through the non-covalent functionalization strategy,reducing graphene oxide(rGO)as the conductive substrate,the reversible electrochemically active organic molecule 2-hydroxy-1,4-naphthoquinone(HNQ)was selected to interact with rGO for non-covalentπ-π,and the non-covalent functional graphene composite electrode material HNQ-rGO of organic molecules was designed and prepared.Meanwhile,its actual energy storage performance was studied.The results of SEM,TEM,FT-IR,XRD and Raman spectra showed that HNQ-RGO has been successfully prepared by reduction of graphite oxide(GO)and non-covalent modification of HNQ molecules on rGO.The experiment revealed that,when the current density is 1 A·g^(-1),the specific capacitance is 321 F·g^(-1),and even when the current density is 5 A·g^(-1),the capacitance retention rate is still 85.7%of its original value after 10000 cycles of charging and discharging.In addition,with 2-hydroxyanthraquinone reduced graphene oxide(HAQ-rGO)as the negative electrode material and HNQ-rGO as the positive electrode material,the designed asymmetric supercapacitor(HAQ-rGO//HNQ-rGO,ASC)at 1.6 V cell voltage has a power density and energy density of 0.8 kW·kg^(-1)and 21.8 Wh·kg^(-1),respectively,and the experimental results showed that the capacitor has excellent energy storage performance.

关 键 词：2-羟基-1 4-萘醌(HNQ) 非共价功能化 石墨烯水凝胶 非对称超级电容器(ASC) 

分 类 号：TM53[电气工程—电器] TB383[一般工业技术—材料科学与工程]