Brandão Ana T S C, State Sabrina, Costa Renata, Potorac Pavel, Vázquez José A, Valcarcel Jesus, Silva A Fernando, Anicai Liana, Enachescu Marius, Pereira Carlos M
Instituto de Ciências Moleculares IMS-CIQUP, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, Porto 4169-007, Portugal.
Center for Surface Science and Nanotechnology, University Polytechnica of Bucharest, Splaiul Independentei, 313, Bucharest 060042, Romania.
ACS Omega. 2023 May 17;8(21):18782-18798. doi: 10.1021/acsomega.3c00816. eCollection 2023 May 30.
Waste, in particular, biowaste, can be a valuable source of novel carbon materials. Renewable carbon materials, such as biomass-derived carbons, have gained significant attention recently as potential electrode materials for various electrochemical devices, including batteries and supercapacitors. The importance of renewable carbon materials as electrodes can be attributed to their sustainability, low cost, high purity, high surface area, and tailored properties. Fish waste recovered from the fish processing industry can be used for energy applications and prioritizing the circular economy principles. Herein, a method is proposed to prepare a high surface area biocarbon from glycogen extracted from mussel cooking wastewater. The biocarbon materials were characterized using a Brunauer-Emmett-Teller surface area analyzer to determine the specific surface area and pore size and by scanning electron microscopy coupled with energy-dispersive X-ray analysis, Raman analysis, attenuated total reflectance Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The electrochemical characterization was performed using a three-electrode system, utilizing a choline chloride-based deep eutectic solvent (DES) as an eco-friendly and sustainable electrolyte. Optimal time and temperature allowed the preparation of glycogen-based carbon materials, with a specific surface area of 1526 m g, a pore volume of 0.38 cm g, and an associated specific capacitance of 657 F g at a current density of 1 A g, at 30 °C. The optimal material was scaled up to a two-electrode supercapacitor using a DES-based solid-state electrolyte (SSE@DES). This prototype delivered a maximum capacitance of 703 F g at a 1 A g of current density, showing 75% capacitance retention over 1000 cycles, delivering the highest energy density of 0.335 W h kg and power density of 1341 W kg. Marine waste can be a sustainable source for producing nanoporous carbon materials to be incorporated as electrode materials in energy storage devices.
尤其是生物废弃物，可能是新型碳材料的宝贵来源。可再生碳材料，如生物质衍生碳，最近作为包括电池和超级电容器在内的各种电化学装置的潜在电极材料受到了广泛关注。可再生碳材料作为电极的重要性可归因于其可持续性、低成本、高纯度、高比表面积和定制特性。从鱼类加工业回收的鱼废料可用于能源应用，并优先遵循循环经济原则。在此，提出了一种从贻贝烹饪废水中提取的糖原制备高比表面积生物碳的方法。使用布鲁诺尔-埃米特-泰勒比表面积分析仪测定生物碳材料的比表面积和孔径，并通过扫描电子显微镜结合能量色散X射线分析、拉曼分析、衰减全反射傅里叶变换红外光谱、X射线衍射、X射线光电子能谱和透射电子显微镜对其进行表征。使用三电极系统进行电化学表征，使用基于氯化胆碱的深共晶溶剂（DES）作为环保且可持续的电解质。在30℃下，最佳时间和温度使得能够制备出比表面积为1526 m²/g、孔体积为0.38 cm³/g且在1 A/g电流密度下相关比电容为657 F/g的基于糖原的碳材料。使用基于DES的固态电解质（SSE@DES）将最佳材料放大制备成两电极超级电容器。该原型在1 A/g电流密度下的最大电容为703 F/g，在1000次循环中电容保持率为75%，最高能量密度为0.335 W h/kg，功率密度为1341 W/kg。海洋废弃物可以成为生产纳米多孔碳材料的可持续来源，这些材料可作为电极材料用于储能装置。
