Solar pyrolysis of renewable biomass has huge potential for sustainable production of fuel or chemical feedstock for the activated carbon materials. Here, we report a method for producing high-quality carbon nanofiber (CNF) precursor and subsequently CNFs as a low-cost and eco-friendly energy storage material. Specifically, pinewood is pyrolyzed with solar energy to generate a phenol-rich bioliquid precursor that is found to be a strong candidate for synthesizing binder-free flexible electrode materials via electrospinning. The CNFs prepared with 30% solar-driven bioliquids and 70% polyacrylonitrile have a high specific surface area and rich microstructure, which are the key to its electrochemical performance in terms of specific capacitance (349 F g⁻¹ at the current density of 0.5 A g⁻¹) with notable rate performance, reversibility, and cycling stability in 6 M KOH aqueous electrolyte. Thus, solar bioliquids are feasible CNF precursors, and such derived CNFs have potential to be applied in energy storage devices.

可再生生物质的太阳能热解具有巨大潜力，可用于可持续生产活性炭材料的燃料或化学原料。在这里，我们报告了一种生产高质量碳纳米纤维（CNF）前体，然后生产CNF作为低成本和生态友好型储能材料的方法。具体地，松木用太阳能热解以产生富含苯酚的生物液体前体，发现该富含苯酚的生物液体前体是用于通过电纺合成无粘合剂的柔性电极材料的强候选者。由30％的太阳能驱动生物液体和70％的聚丙烯腈制备的CNF具有较高的比表面积和丰富的微观结构，这是其电化学性能的关键，这取决于比电容（在电流密度为0.5 A时为349 F g ^-1） g ^-1）在6 M KOH水性电解质中具有显着的速率性能，可逆性和循环稳定性。因此，太阳能生物液体是可行的CNF前体，并且这种衍生的CNF具有在能量存储设备中应用的潜力。