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Shuai WEI, Zhaoxia LI, Shujuan MENG, Xingchen ZHU, Xinyu LU, Qiong SU, Yanbin WANG. Preparation of Fe2O3/nitrogen-doped biomass carbon composites and their application in supercapacitors[J]. Acta Materiae Compositae Sinica.
Citation: Shuai WEI, Zhaoxia LI, Shujuan MENG, Xingchen ZHU, Xinyu LU, Qiong SU, Yanbin WANG. Preparation of Fe2O3/nitrogen-doped biomass carbon composites and their application in supercapacitors[J]. Acta Materiae Compositae Sinica.

Preparation of Fe2O3/nitrogen-doped biomass carbon composites and their application in supercapacitors

Funds:  National Natural Science Foundation of China, No.21968032, 22165025; Provincial Science and Technology Project, No.20 YF8 FA045; Basic Research Funds for Central Universities, No.31920220044; Chemistry Innovation Team Building Project (1110130139,1110130141); Provincial first-class Professional Construction (2019 SJYLZY-08); Provincial College Innovation and Entrepreneurship Project, No.2021 SJCXCYXM-01, 2021 SJCXCYTD-01; Outstanding Graduate Student "Innovation Star" Project (2022 CXZX-200)
  • Received Date: 2022-10-25
  • Accepted Date: 2023-01-08
  • Rev Recd Date: 2022-12-26
  • Available Online: 2023-02-03
  • The development of renewable, low-cost and environmentally friendly electrode materials with fast ion/electron transfer rate and adjustable surface chemistry is an urgent need for the development of current energy storage devices. In recent years, biomass carbon materials have attracted much attention because of their low cost, renewable and good cycling performance, but their low specific capacitance and energy density affect their practical applications. Here, the biomass waste was transformed into carbon materials with good chemical properties, and the transition metal oxide Fe2O3 was composite by heteroatom-doped biomass carbon materials, taking advantage of the complementary strengths of Fe2O3 and nitrogen doped carbon was used to prepare Fe2O3/ nitrogen-doped biomass carbon (NBCs) composite materials by one-step carbonization, showing excellent electrochemical performance. The results show that the specific capacitance of Fe2O3/NBCs as the negative electrode material is 575 F·g−1 at a current density of 1 A·g−1. At the same time, Fe2O3/NBCs-700°C and NiCoFe-P were used as cathode and cathode materials respectively to assemble asymmetric supercapacitors, achieves an energy density of 33 W·h·kg−1 at a power density of 800 W·kg−1. The assembled asymmetric supercapacitors also exhibit excellent cycling stability, maintaining 82.35% capacitance after 3500 cycles. Therefore, Fe2O3/NBCs is a promising electrode material for supercapacitors as negative electrode materials.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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