Nanocarbon materials have great potential for sustainable energy harvest and energy utilizations, such as solar thermal stream generation, and interfacial evaporation. However, the evaporation rate is far too low for practical applications. The technologies are not ready yet for industries requiring rapid, energy‐efficient, and low‐cost evaporation processes such as distillation and sterilization. A flexible ultrathin graphene–carbon cloth (CC)‐based carbon–carbon composites is prepared by in situ electrochemical reduction of graphene oxide. The carbon–carbon composite materials demonstrate high performance in photothermal evaporation; more importantly, all carbon‐based devices can also be operated as low‐voltage Joule heating elements in wide temperature range up to 389 °C. Even when a very low voltage of 3 V is applied, the graphene–CC heater can reach a very high heating speed up to 112 °C s^–1, and a steady‐state temperature up to 292 °C within 10 s only. The low‐voltage heater promises to be the most effective solution for high‐speed interfacial evaporation since its evaporation rate can reach up to 45.87 kg m⁻² h⁻¹, enhanced by one order of magnitude compared to the best solar power photothermal seawater desalination devices ever reported.

中文翻译：

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用于太阳能和低压动力高效界面蒸发的石墨烯-碳复合材料

纳米碳材料具有可持续的能量收集和能源利用的巨大潜力，例如太阳热流的产生和界面蒸发。然而，蒸发速率对于实际应用而言太低了。对于需要快速，节能和低成本蒸发工艺（例如蒸馏和灭菌）的行业，该技术尚未准备就绪。柔性超薄石墨烯-碳布（CC）基碳-碳复合材料是通过原位电化学还原氧化石墨烯制备的。碳-碳复合材料在光热蒸发方面表现出出色的性能；更重要的是，所有碳基设备也可以在高达389°C的宽温度范围内作为低压焦耳加热元件运行。即使施加3 V的极低电压，^–1以及仅在10 s内达到292°C的稳态温度。低压加热器有望成为高速界面蒸发的最有效解决方案，因为其蒸发速率可达到45.87 kg m ^-2 h ^-1，与最佳太阳能光热海水淡化技术相比提高了一个数量级。报告过的设备。