Affiliation:
1. School of Mechanics and Optoelectronics Physics, Anhui University of Science and Technology, Huainan 232001, China
2. Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou 234000, China
3. State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
Abstract
The advantages of low cost, high theoretical capacity, and dependable safety of aqueous zinc ion hybrid supercapacitors (ZHSCs) enable their promising use in flexible and wearable energy storage devices. However, achieving extended cycling stability in ZHSCs is still challenged by the limited availability of carbon cathode materials that can effectively pair with zinc anode materials. Here, we report a method for synthesising heteroatom-doped carbon nanofibers using electrostatic spinning and metal-organic frameworks (specifically ZIF-8). Assembled Zn//ZPCNF-1.5 ZHSCs exhibited 193 mA h g−1 specific capacity at 1 A g−1 and 162.6 Wh kg−1 energy density at 841.2 kW kg−1. Additionally, the device showed an ultra-long cycle life, maintaining 98% capacity after 20,000 cycles. Experimental analysis revealed an increase in the number of pores and active sites after adding ZIF-8 to the precursor. Furthermore, N doping effectively enhanced Zn2+ ions chemical adsorption and improved Zn-ion storage performance. This work provides a feasible design strategy to enhance ZHSC energy storage capability for practical applications.
Funder
State Key Laboratory of Biobased Material and Green Papermaking
Scientific Research Foundation of Suzhou University
Qilu University of Technology, Shandong Academy of Sciences
Key Scientific Research Project of Suzhou University
Innovative Research Team of Anhui Provincial Education Department
Natural Science Research Project in Universities of Anhui Province in China
Outstanding Youth Talents in Anhui Provincial Education Department
Key Discipline of Material Science and Engineering of Suzhou University
Support Program for Excellent Young Talents in Universities of Anhui Province
Support Project of Universities for Young Talents under Grant of Anhui Province
Primary Research and Development Program of the Project of Anhui Province Academic and Technical Leader
Subject
Electrical and Electronic Engineering,Electrochemistry,Energy Engineering and Power Technology
Cited by
1 articles.
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