Modification and Supercapacitive Performance Enhancement of Calcium Carbide-Derived Carbon Prepared by a Green Solvent-Free Mechanochemical Route

Abstract

A solvent-free mechanochemical method is a green and environmentally friendly preparation technology for the preparation of calcium carbide-derived porous carbon (CCDPC). Although CCDPC can be widely used in the fields of energy storage, gas separation, catalysis, and so on, the performance of CCDPC as an electrode material of supercapacitors still needs to be further improved. Based on the in situ chemical oxidation polymerization method, in this paper, polyaniline (PANI) is successfully introduced into CCDPC and covered on the surface and skeleton of CCDPC. It has been found that the as-prepared CCDPC/PANI composite electrode displays a high specific capacitance of 362 F g–1 at 0.5 A g–1, which is approximately 4 times higher than that of the pure CCDPC electrode. When assembling a symmetric supercapacitor by a CCDPC/PANI composite with a wide voltage window of 0–1.1 V, the supercapacitor delivers a higher energy density than CCDPC and reveals excellent capacitance retention of 77% after 10,000 cycles. Therefore, the preparation technology of the CCDPC/PANI composite provides significative exploration for the enhancement of electrochemical performance of high-performance supercapacitors and predicts a promising application prospect in the field of energy storage.

Screen printable PANI/carbide-derived carbon supercapacitor electrode ink with chitosan binder

“…As a result, the specific capacitance value of the hybrid PANI/CDC composite is higher than that of pristine CDC. Considering the small quantity of research on PANI/CDC composites as an electrode material, it has to be emphasized that the acquired specific capacitance values are within the range reported in the existing literature [59].…”

PBA-Derived Ternary FeCoNi Alloy Supported on N-Doped Porous Carbon as a Bifunctional Catalyst for Zn-Air Batteries

“…Typically, CS was generated using a reported method. 29 To synthesize FeCoNi-N-CS, 50 mL of deionized (DI) water dissolved 0.6 mmol of NiSO 4 •6H 2 O, 0.9 mmol of HOC(COONa)(CH 2 COONa) 2 •2H 2 O and 100 mg of CS named solution A, while solution B was 50 mL of DI dissolved 0.4 mmol of K 3 CO(CN) 6 . Following that, B was dripped into A while stirring, and the resultant mixture was aged at room temperature for 24 h. After sedimentation, the mixture was separated by centrifugation and washed three times with DI water and anhydrous ethanol.…”

“…27,28 Yang et al used agricultural waste camellia seed shells to make a porous biomass carbon material with a high specific surface area, which has great potential as a catalyst skeleton. 29 In this work, FeCoNi nanoparticles supported on a biomassderived porous carbon skeleton (CS) were prepared to improve the activities of the OER/ORR bifunctional activities. CoNi@FeCo-PBA is coated on the CS and then calcined as a FeCoNi-N-CS catalyst with FeCoNi alloy nanoparticles.…”

Mechanochemically Assisted Microwave-Induced Plasma Synthesis of a N-Doped Graphitic Porous Carbon-Based Aqueous Symmetric Supercapacitor with Ultrahigh Volumetric Capacitance and Energy Density

“…Therefore, to provide an adequate solution, extensive research has been done for decades by proposing new electrode materials and controlling their structure–property relationships through various means. Encouraging outcomes have emerged from research on diverse materials, such as perovskite, , metallic carbides, transition metal oxides, porous activated carbons, carbide-derived carbons, mesoporous carbons, carbon nanofibers, carbon nanotubes, graphene materials, carbon nanocages, polyaniline/graphene composites, porous carbon/graphene hybrids, heteroatom-doped carbons, and many more . Within the array of reported electrodes, porous carbon-based options stand out for their potential due to their high specific surface areas, abundant availability, and excellent electrical conductivity.…”