SCHEDULED MAINTENANCE
High-performance supercapacitors based on amorphous carbon derived from natural Ramulus mori†
*a
Abstract
Using biomass waste as a supercapacitor material has been one of the most widely used methods owing to its high performance, low cost and sustainable green economy. Herein, we employ Ramulus mori, a silkworm industry waste, by low-cost pyrolysis and chemical activation methods to produce high-efficiency, high-power and high-energy supercapacitors. The as-prepared architectures with a large number of hierarchical pores and high specific surface areas exhibit a high specific capacitance of ∼796 F g−1 at 1 A g−1, and the retention rate can reach 93.6% even after 10 000 cycles at 10 A g−1. The assembled symmetrical device has a high energy density of ∼59 W h kg−1 at 1.2 kW kg−1, which paves the way for the development of green electrode materials with promising applications.
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