Utilization of Single Biomass-derived Micro-Mesoporous Carbon for Dual-Carbon Symmetric and Hybrid Sodium-ion Capacitors

New Journal of Chemistry (Royal Society of Chemistry): (IF = 3.925); Publication Date: 03 June 2023    

DOI: https://doi.org/10.1039/D3NJ01349A

Author(s): Nagmani, Biraj Kanta Satpathy, Abhijeet Kumar Singh, Debabrata Pradhan, and Sreeraj Puravankara


Sodium-ion capacitors (SICs) have emerged significantly in the last decades due to their high energy, high power with rapid energy deliverability, and sustainability quotient as an alternative to lithium-ion capacitors (LICs). In this study, a jute-based precursor-derived carbon is chemically activated with or without microwave pretreatment and tested in aqueous and non-aqueous symmetric and asymmetric SICs. The synthesized microwave pretreated activated carbon (AJPC-M) exhibits more defect and micro/ mesoporosity with a high surface area of 1529.75 m2 g-1 with a high specific capacitance of 1166 F g-1 at the current density of 1 A g-1 and excellent rate capability of 470 F g-1 at 10 A g-1 in the three-electrode aqueous system. The symmetric sodium-ion capacitor (SSIC) with AJPC-M-based capacitor in an aqueous medium delivered a high energy density of 37.7 Wh kg- 1 at the specific power of 785 W kg-1 and a maximum specific power of 7895 W kg-1 with a specific energy of 9.75 Wh kg-1 at 1 A g- 1 and 10 A g-1, respectively. 100% gravimetric capacitance is retained for 9000 cycles at 8 A g-1. In the non-aqueous system, the AJPC-M cathode displays the specific capacity of 89 mAh g-1 at the current density of 0.02 A g-1. The symmetric sodium-ion capacitor (SSIC) in a non-aqueous system delivers a maximum energy density of 60 Wh kg-1 at a specific power of 510 W kg-1 and a maximum specific power of 3570 W kg-1. The concept checks on the hybrid sodium-ion asymmetric capacitor (ASIC) with activated (APJC-M) as cathode and hard carbon (JPC-D) as the anode, derived from the same jute-based precursor, delivered an improved performance with 86 Wh kg-1 at a specific power of 636 W kg-1 and realized a maximum specific power of 3440 W kg-1. The excellent electrochemical capacitance of jute-derived micro-mesoporous activated carbon with more defects, high surface area, larger pore volume, and optimum pore size distribution demonstrates a cost-effective porous activated carbon for powering both anode and cathode for both symmetric and hybrid SIC devices.

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