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Description
The compressed file package contains CV,EIS,CYCLE and full battery data for the positive electrode material.
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Microstructural characterization was performed using a TESCAN MIRA LMS field emission scanning electron microscope for morphology analysis. Transmission electron microscopy (TEM) analysis was conducted using a JEM-2100F instrument to examine the microstructure and composition of the materials. Phase analysis was carried out by a Bruker D8 Advance X-ray diffractometer. The charge-discharge tests of the batteries were conducted with a Neware CT2007A battery testing system (Wuhan Jinnuo Electronics Co., Ltd.). Electrochemical performance, including cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), was evaluated using a CHI750E electrochemical workstation (Shanghai Chenhua Instrument Co., Ltd.). For the constant current charge-discharge cycling tests, the Neware battery testing system was employed. The charge-discharge current density was set at 0.1C, with discharge and charge cut-off voltages ranging from 1.5 to 4.2 V. The testing temperature was maintained at room temperature (25°C). For Ah-level aqueous sodium-ion single cells, the charge-discharge rate was 1C, with discharge and charge cut-off voltages ranging from 0.05 to 1.7 V and the testing temperature also maintained at room temperature (25°C).
Institutions
- Bengbu University