Chernysheva Daria V, Chus Yuri A, Klushin Victor A, Lastovina Tatiana A, Pudova Lyudmila S, Smirnova Nina V, Kravchenko Oleg A, Chernyshev Victor M, Ananikov Valentine P
Platov South-Russian State Polytechnic University (NPI), 132 Prosveschenia Str., Novocherkassk, 346428, Russia.
International Research Center "Smart Materials", Southern Federal University, 5 Zorge Str., Rostov-on-Don, 344090, Russia.
ChemSusChem. 2018 Oct 24;11(20):3599-3608. doi: 10.1002/cssc.201801757. Epub 2018 Oct 12.
Biomass processing wastes (humins) are anticipated to become a large-tonnage solid waste in the near future, owing to the accelerated development of renewable technologies based on utilization of carbohydrates. In this work, the utility of humins as a feedstock for the production of activated carbon by various methods (pyrolysis, physical and chemical activation, or combined approaches) was evaluated. The obtained activated carbons were tested as potential electrode materials for supercapacitor applications and demonstrated combined micro- and mesoporous structures with a good capacitance of 370 F g (at a current density of 0.5 A g ) and good cycling stability with a capacitance retention of 92 % after 10 000 charge/discharge cycles (at 10 A g in 6 m aqueous KOH electrolyte). The applicability of the developed activated carbon for practical usage as a supercapacitor electrode material was demonstrated by its successful utilization in symmetric two-electrode cells and by powering electric devices. These findings provide a new approach to deal with the problem of sustainable wastes utilization and to advance challenging energy storage applications.
由于基于碳水化合物利用的可再生技术加速发展，生物质加工废料（腐殖质）预计在不久的将来会成为大量的固体废物。在这项工作中，评估了腐殖质作为通过各种方法（热解、物理和化学活化或联合方法）生产活性炭的原料的效用。所获得的活性炭被测试作为超级电容器应用的潜在电极材料，其具有组合的微孔和介孔结构，在0.5 A g的电流密度下具有370 F g的良好电容，并且在10000次充放电循环后（在6 m KOH水性电解质中，10 A g）具有92%的电容保持率，循环稳定性良好。通过在对称双电极电池中的成功应用以及为电子设备供电，证明了所开发的活性炭作为超级电容器电极材料实际应用的适用性。这些发现为解决可持续废物利用问题和推进具有挑战性的储能应用提供了一种新方法。
