Regensburg 2022 – scientific programme

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 15: Materials for Energy Storage (joint session KFM/CPP)

KFM 15.1: Talk

Wednesday, September 7, 2022, 09:30–09:50, H7

Hybrid CuCo2O4 nanosheets as binder-free supercapacitor electrodes — •Zidong Wang^{1, 2}, Yude Wang², Huaping Zhao¹, and Yong Lei¹ — ¹Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau, Germany — ²School of Materials and Energy, Yunnan University, 6500504 Kunming, Peoples Republic of China

CuCo2O4 is one kind of pseudocapacitive materials and it has a high theoretical capacitance, but it suffers from poor electrical conductivity. In this work, CuCo2O4 nanosheets were directly grown on a conductive skeleton to significantly enhance the conductivity and at the same time reduce the agglomeration of CuCo2O4 nanosheets. In addition, the hybrid nanosheet structures also expand the interface and provide more active electrochemical sites, facilitating kinetic processes and electrochemical reactions. The as-prepared CuCo2O4 nanosheets on a conductive skeleton were studied as binder-free electrode and exhibited outstanding electrochemical performance with the specific capacitance of 1595 F g*1 at a current density of 1 A g*1 and 85.1% capacitance retention after 4600 cycles. These results indicated that hybrid CuCo2O4 nanosheets has great application potential as binderfree electrode in supercapacitors.