Graphene and related materials have been widely studied due to their superior properties in a wide range of applications. However, large-scale production remains a critical challenge to enable commercial acceptance. Here, we present a facile, scalable, one-step electrochemical method for producing hybrid transition metal oxide (V, Fe, Ti, or Mn)/graphene materials (TMO-EGs) as active materials for supercapacitors. Therein, we have designed and developed a continuous flow reactor with a high production rate (>4 g h⁻¹) of TMO-EGs, where the TMO accounts for 36 weight%. TMO-EG flakes demonstrate a moderate lateral size of up to 5 μm and a specific surface area of 64 m² g⁻¹. Notably, TMO-EGs present a capacitance of up to 188 F g⁻¹ as single electrodes in 4 M LiCl. The most promising material, MnO_x-EG, has been used for the large-scale production of thin-film supercapacitor devices (40 × 40 × 0.25 mm) in a commercial pilot line. Using 1 M Na₂SO₄ as the electrolyte, the as-fabricated devices deliver a capacitance of 52 mF cm⁻², with 83% capacitance retention after 6000 charge–discharge cycles, comparable to recent reports of similar devices. The simplicity, scalability, and versatility of our method are highly promising to promote the commercial applications of graphene-based materials and can be further developed for the upscalable production of other 2D materials, such as transition metal dichalcogenides and MXenes.

中文翻译：

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用于高性能超级电容器的用过渡金属氧化物装饰的电化学剥离石墨烯的可扩展一步生产

石墨烯和相关材料因其在广泛应用中的优越性能而被广泛研究。然而，大规模生产仍然是实现商业接受的关键挑战。在这里，我们提出了一种简便、可扩展的一步电化学方法，用于生产混合过渡金属氧化物（V、Fe、Ti 或 Mn）/石墨烯材料（TMO-EG）作为超级电容器的活性材料。其中，我们设计并开发了一种具有高产率 (>4 gh ^-1 ) TMO-EG的连续流动反应器，其中 TMO 占 36 重量％。TMO-EG 薄片表现出高达 5 μm 的中等横向尺寸和 64 m ² g ^-1的比表面积。值得注意的是，TMO-EG 的电容高达 188 F g ^-1作为 4 M LiCl 中的单电极。最有前途的材料 MnO _x -EG 已被用于大规模生产薄膜超级电容器器件（40 × 40 × 0.25 mm）的商业试生产线。使用 1 M Na ₂ SO ₄作为电解质，制造的器件提供 52 mF cm ^{-2 的}电容，在 6000 次充放电循环后具有 83% 的电容保持率，与最近关于类似器件的报道相当。我们的方法的简单性、可扩展性和多功能性非常有希望促进石墨烯基材料的商业应用，并且可以进一步开发用于其他二维材料的规模化生产，例如过渡金属二硫属化物和 MXenes。