研究目的
Investigating the effects of acid-treated g-C3N4 with O- and N-containing groups as an artificial protection layer on Li metal anodes to enhance the stability and performance of lithium metal batteries.
研究成果
The introduction of acid-treated g-C3N4 with O- and N-containing groups as an artificial protection layer on Li metal anodes significantly enhances the stability and performance of lithium metal batteries. The A-G-Li electrodes demonstrate improved cycle life and rate capability in both symmetric and full cells, indicating a promising approach for developing high-performance lithium metal batteries.
研究不足
The study focuses on the performance of acid-treated g-C3N4 as an artificial protection layer but does not extensively explore the long-term stability under extreme conditions or the scalability of the synthesis process.
1：Experimental Design and Method Selection:
The study employs acid-treated g-C3N4 (A-G) as an artificial protection layer on Li foil through a physical pressing method. The methodology includes the synthesis of A-G, its characterization, and electrochemical performance evaluation in symmetric and full cells.
2：Sample Selection and Data Sources:
Pristine g-C3N4 (P-G) was prepared by calcining melamine, and A-G was synthesized by treating P-G with nitric acid. Electrochemical measurements were conducted using symmetric cells and full cells with LiFePO4 and S cathodes.
3：List of Experimental Equipment and Materials:
Materials include melamine, nitric acid, N-methyl-pyrrolidinone, and commercial LiFePO
4：Equipment includes a tube furnace, SEM, XRD, FTIR, XPS, and electrochemical measurement setups. Experimental Procedures and Operational Workflow:
The synthesis of A-G, coating on Li foil, assembly of symmetric and full cells, and their electrochemical testing.
5：Data Analysis Methods:
Electrochemical impedance spectroscopy, galvanostatic linear polarization, and Warburg coefficient analysis were used to analyze the data.
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