We report a bubbling chemical vapor deposition method for mass production of high-quality graphite nanosheets using molten copper as the catalyst for continuous growth. Bubbles containing precursor gas (CH₄ or natural gas) are produced by inserting an aerator into molten copper. High-quality graphite nanosheets with a thickness ranging from a few to 40 graphitic layers are grown on bubble surfaces and carried to the copper surface. The production rate can be as high as 9.4 g/h using a crucible with a volume of 3 L. The high quality of the graphite nanosheets is demonstrated by composites with very high conductivity. The highly conductive composite shows excellent performance in an electromagnetic interference (EMI) shielding application with an EMI effectiveness of >70 dB at X band. Moreover, except for precursor gases, the lack of other chemicals in the growth process makes it an environmentally friendly approach. Natural gas can also be used as the precursor, making it a low-cost production. In addition, the naturally crumpled feature of the graphite nanosheets should allow them to ber used in multiple applications, because restacking can be prevented.

中文翻译：

---

熔融铜鼓泡化学气相沉积法连续生产石墨纳米片

我们报告了一种鼓泡的化学气相沉积方法，用于大量生产使用熔融铜作为连续生长催化剂的高质量石墨纳米片。含有前体气体（CH _4的气泡或天然气）是通过将增氧机插入熔融铜中来生产的。在气泡表面上生长厚度范围从几层到40层石墨层的高质量石墨纳米片，并将其带到铜表面。使用体积为3 L的坩埚，生产率可以高达9.4 g / h。具有极高电导率的复合材料证明了石墨纳米片的高品质。高导电性复合材料在电磁干扰（EMI）屏蔽应用中表现出出色的性能，在X波段的EMI有效性> 70 dB。此外，除了前体气体外，在生长过程中缺乏其他化学物质使其成为一种环境友好的方法。天然气也可以用作前体，使其成为低成本生产。此外，