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Electrocatalytic oxygen reduction of three‑dimensional carbon fiber‑based composites for seawater oxygen‑dissolved battery KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/420753
One-step hydrothermal reduction method was used to prepare three-dimensional carbon fiber brush-based graphene–platinum (CFB/Pt–G) composites to improve the electrocatalytic oxygen reduction activity of cathode materials for seawater oxygen-dissolved battery. Characterization results show that the reduced graphene oxide of as-prepared graphene–platinum composite displays the few-layer folded structure. In addition, Pt nanoparticles with the polycrystalline structure dispplay a preferential growth along the crystal plane of (111) and are mainly distributed around the defect cavities of folded graphene. Electrochemical results show that the diffusion-limited current density of CFB/Pt–G composite tested with 1600 rpm/min in 3.5% NaCl solution reaches 5 mA/cm2, while that of CFB/G is only 2.64 mA/cm2. Battery discharge results show that the maximum volume power density of CFB/Pt–G–Mg battery with a stable open voltage of 1.73 V is 81 times as much as the commercial seawater battery SWB1200.
1 Introduction
2 Experimental methods
2.1 Material preparations
2.2 Material characterizations
2.3 Electrochemical performance tests
3 Results and discussion
3.1 Materials characterization
3.2 Electrochemical results of materials
3.3 Battery discharge results
4 Conclusion
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