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Chemcial Industry and Engineering 2025, Vol. 42 Issue (1) :88-97    DOI: 10.13353/j.issn.1004.9533.20220347
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Preparation and application of α-Fe2O3/reduced graphene oxide (RGO)
WANG Hongzhi1, BAO Saisai1, SU Zhan2,3, YU Jinshan2,3, ZHANG Weiguo1,4
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Tianjin Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China;
3. Tianjin Key Laboratory of Internet of Things in Electricity, Tianjin 300384, China;
4. Tianjin University of Sport, Tianjin 301617, China

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Abstract The α-Fe2O3/RGO composite with α-Fe2O3 nanoparticles (FeCl3·6H2O as the iron source) uniformly dispersed on reduced graphene oxide (RGO) flakes was successfully prepared by a hydrothermal method to achieve high electrochemical performance of asymmetric supercapacitors (ASCs). It was characterized by SEM, TEM, XRD, and XPS. And electrochemical properties were tested using a standard three-electrode system. The results show that the highly assembled α-Fe2O3/RGO has a large specific capacitance of 740.8 F·g-1 at 1 A·g-1 and a long cycle stability of 80.0% (10 000 cycles) at 5 A·g-1. The NiCo2O4//α-Fe2O3/RGO asymmetric supercapacitor was assembled with the prepared α-Fe2O3/RGO as the negative electrode and NiCo2O4 as the positive electrode. The energy density of 47.8 Wh·kg-1 was obtained at 792.8 W·kg-1, and 78.6% cyclic stability (10 000 cycles) was maintained at 5 A·g-1. This greatly promotes the application of ASCs in energy storage systems.
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WANG Hongzhi
BAO Saisai
SU Zhan
YU Jinshan
ZHANG Weiguo
Keywordsα-Fe2O3   graphene   asymmetric supercapacitor   cycle performance     
Received 2022-06-01;
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WANG Hongzhi, BAO Saisai, SU Zhan, YU Jinshan, ZHANG Weiguo.Preparation and application of α-Fe2O3/reduced graphene oxide (RGO)[J]  Chemcial Industry and Engineering, 2025,V42(1): 88-97
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