Microporous carbons with three-dimensional interconnected macropores based on corn stigmas for advanced supercapacitors
Source abstract
Abstract
The slender corn stigmas-based microporous carbon (denoted as ACS-22) was prepared by the pre-treatment of corn stigmas in KOH solution and subsequent activation process. The resulted ACS-22 exhibits high specific surface area (1602 m2 g−1), 3D interconnected macroporous cores, and large percentage of micropores. When used as electrode in supercapacitors, the interconnected macropores can serve as ion-buffering reservoirs and facilitate transportation of electrolyte ions, while abundant micropores can provide electrode with a high accessible surface area for ion storage. Therefore, ACS-22 presents high capacitance and excellent rate capability. For example, the capacitance of ACS-22 can reach 210 F g−1 at 0.1 A g−1, which slightly decreases to 190 F g−1, giving a capacitance retention of 90%. Furthermore, ACS-22 also shows good cyclic stability that even after 10000 cycles, 97% capacitance can still remain.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Conducting polymers and applications · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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