Harshitha B. Tyagaraj , Vikram Mahamiya , Supriya J. Marje , Moein Safarkhani , Gagankumar S K , Ebrahim Al-Hajri , Nilesh R. Chodankar , Yun Suk Huh , Young-Kyu Han
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引用次数: 0
摘要
回收利用工业废料来生产能源和储存材料,是解决其环境影响和实现经济效益的最佳途径。本研究利用固体工业酿酒废料,通过简单的热处理和使用 KOH 进行化学活化,制备出一种创新的含杂原子的类石墨烯多孔碳(HGPC)。制备的含 N 和 S 的 HGPC 具有薄片状结构、高比表面积(925.00 m2/g)和微多孔性,适用于可持续储能应用。密度泛函理论研究表明,N 和 S 共掺的协同效应增强了 HGPC 样品的导电性和电解质离子(Na+)扩散动力学。当在超级电容器(SC)电池组件中使用二聚体电解质时,从葡萄酒厂废弃物中提取的固体 HGPC 可提供 2.0 V 的工作电压窗口,其宽度约为已报道的对称 SC 的两倍,与非对称/混合 SC 相比也毫不逊色。此外,它的比电容为 32 F/g(电池级),能量密度高达 17.7 Wh/kg,功率密度为 303.42 W/kg,并且在 10,000 次充放电循环中具有出色的循环稳定性。这项工作表明,从酿酒厂固体废物中提取的 HGPC 可用于未来的太阳能电池技术,取代成本高昂的商用 YP-50F 碳,以可持续的绿色方式提供更强的能量存储。
Recycling industrial waste to produce energy and storage materials provides the best means of addressing its environmental impact and achieving economic benefits. This study used solid industrial winery waste to prepare an innovative heteroatom containing graphene-like porous carbon (HGPC) by simple heat treatment and chemical activation using KOH. The prepared N and S containing HGPC had a thin sheet-like structure, a high specific surface area (925.00 m2/g), and a micro-meso-porosity suitable for sustainable energy storage applications. A density functional theory investigation indicated that the synergistic effects of N and S co-doping enhanced both conductivity and electrolyte ion (Na+) diffusion kinetics in HGPC samples. When the solid winery waste-derived HGPC was used in a supercapacitor (SC) cell assembly with a diglyme-based electrolyte, it delivered an operating voltage window of 2.0 V, which was about twice as wide as those reported for symmetric SCs and compared well with those of asymmetric/hybrid SCs. In addition, it had a specific capacitance of 32 F/g (at the cell level) with a high energy density of 17.7 Wh/kg at a power density of 303.42 W/kg and excellent cycling stability over 10,000 charge/discharge cycles. This work shows that the solid winery waste-derived HGPC can be utilized for future SCs technology by replacing costly commercial YP-50F carbon to provide enhanced energy storage in a sustainable, green manner.
期刊介绍:
Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science.
With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.