当前位置：
X-MOL 学术
›
ACS Appl. Nano Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Graphene Modified with Triruthenium Acetate Clusters as an Electrode for the Hybrid Energy Storage System
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-07-02 , DOI: 10.1021/acsanm.0c01170 Alejandro E. Pérez Mendoza 1 , Naiane Naidek 1 , Elizangela Cavazzini Cesca 1 , Julio César Sagás 2 , Elisa S. Orth 1 , Aldo J. G. Zarbin 1 , Herbert Winnischofer 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-07-02 , DOI: 10.1021/acsanm.0c01170 Alejandro E. Pérez Mendoza 1 , Naiane Naidek 1 , Elizangela Cavazzini Cesca 1 , Julio César Sagás 2 , Elisa S. Orth 1 , Aldo J. G. Zarbin 1 , Herbert Winnischofer 1
Affiliation
|
Electrodes combining battery and supercapacitor materials are an alternative to enhance energy and power densities in energy storage devices. Herein, a material of graphene modified with the triruthenium acetate coordination compound was synthesized through covalent functionalization of graphene. The structure and chemical composition of the material were characterized using scanning electron microscopy and infrared, Raman, and X-ray photoelectron spectroscopies. The electrochemical characterization through cyclic voltammetry and discharge curves revealed that triruthenium cluster-functionalized graphene has excellent charge–discharge capability with a cycling retention over 98% after 5000 cycles. Also, a synergistic effect was found at low specific discharge currents, with contributions of the triruthenium cluster Faradaic process and graphene double-layer capacitance to the storage capacity. At a specific discharge current of 0.25 A g–1, the capacity of triruthenium cluster-functionalized graphene is 1.2 times that of graphene, reaching a specific capacitance of 11 F g–1, but the capacity is limited by charge transport at high current densities and scan rates.
中文翻译：
醋酸三钌簇簇修饰的石墨烯作为混合储能系统的电极
结合电池和超级电容器材料的电极是增强储能设备中能量和功率密度的一种替代方法。在此，通过对石墨烯的共价官能化来合成用乙酸三钌配位化合物改性的石墨烯的材料。使用扫描电子显微镜和红外，拉曼和X射线光电子能谱对材料的结构和化学组成进行表征。通过循环伏安法和放电曲线进行的电化学表征表明，三簇簇官能化的石墨烯具有出色的充放电能力，在5000次循环后循环保留率高达98％。此外，在低比放电电流下发现了协同作用，利用三钌簇法拉第工艺和石墨烯双层电容对存储容量的贡献。在0.25 A g的特定放电电流下–1时，三簇簇功能化石墨烯的容量是石墨烯的1.2倍，达到11 F g –1的比电容，但该容量受到高电流密度和扫描速率下的电荷传输的限制。
更新日期：2020-07-24
中文翻译：
醋酸三钌簇簇修饰的石墨烯作为混合储能系统的电极
结合电池和超级电容器材料的电极是增强储能设备中能量和功率密度的一种替代方法。在此，通过对石墨烯的共价官能化来合成用乙酸三钌配位化合物改性的石墨烯的材料。使用扫描电子显微镜和红外，拉曼和X射线光电子能谱对材料的结构和化学组成进行表征。通过循环伏安法和放电曲线进行的电化学表征表明，三簇簇官能化的石墨烯具有出色的充放电能力，在5000次循环后循环保留率高达98％。此外，在低比放电电流下发现了协同作用，利用三钌簇法拉第工艺和石墨烯双层电容对存储容量的贡献。在0.25 A g的特定放电电流下–1时，三簇簇功能化石墨烯的容量是石墨烯的1.2倍，达到11 F g –1的比电容，但该容量受到高电流密度和扫描速率下的电荷传输的限制。
京公网安备 11010802027423号