Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 245, Issue -, Pages 721-732Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2019.01.032
Keywords
Li-O-2 battery; Cathode 3D self-standing; Prussian blue analogues; Biomass derived carbon
Funding
- Fundamental Research Funds for the Central Universities [2013QNA48]
- Natural Science Foundation of Jiangsu Province of China [BK20160239]
- Key Laboratory of Coal-based CO2 Capture and Geological Storage, Jiangsu Province (China University of Mining and Technology) [2016B06]
- Science and Technology Project of Xuzhou City [KC18063]
- Ministry of Education and Science of the Russian Federation [14. Z50.31.0001]
- European Union
- Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under RESEARCH-CREATE-INNOVATE [T1EDK-02442]
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Traditional 3D self-standing electrodes for lithium-oxygen (Li-O-2) batteries require a high cost and complex preparation process that restrict their development. Herein, discarded biomass (pomelo peel, PP) is used as raw material and in-situ grew NiFe-Prussian blue analogues on its surface. Then a novel 3D binder-free and self standing NiFe@NC/PPC electrode is obtained through the carbonization process and directly used as a cathode in Li-O-2 batteries. Compared with PPC (carbonized pomelo peel) and NiFe@NC/CP (NiFe@NC catalysts coated on carbon paper), NiFe@NC/PPC gathered the advantageous characteristics of i) efficient diffusion rates for O-2/electrolyte and ii) good catalytic activity for oxygen reduction reaction/oxygen evolution reaction (ORR/OER). The as fabricated Li-O-2 batteries, with NiFe@NC/PPC as cathode, are performed a relatively high specific capacity (13.79 mAh cm(-2)), a long cycle life (290 cycles) at a current density of 0.1 mA cm(-2). Therefore, considering the convenience of synthesis method and the inexpensive raw materials, this is a feasible way to prepare high performance and low cost cathodes for Li-O-2 batteries.
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