High and ultra-stable energy storage from all-carbon sodium-ion capacitor with 3D framework carbon as cathode and carbon nanosheet as anode

Sodium-ion capacitors(SICs)are extremely promising due to the combined merits of high energy-power characteristics and considerable price advantage.However,it is still difficult to achieve high energypower outputs and cycle stability in a typical configuration of the metal-based battery-type anode and activated carbon capacitor-type cathode due to the kinetic mismatching.In this work,a carbon nanosheet(PSCS-600)with large interlayer spacing of 0.41 nm derived from the bio-waste pine cone shell was prepared.Besides,the covalent triazine framework derived carbon(OPDN-CTF-A)was obtained through ionothermal synthesis strategy,exhibiting beneficial hierarchical pores(0.5-6 nm)and high heteroatoms(5.6 at%N,6.6 at%O).On this basis,the all-carbon SICs were fabricated by the integration of PSCS-600 anode and OPDN-CTF-A cathode.The device delivered high energy density 111 Wh kg^(-1),high power output of 14,200 W kg^(-1) and ultra-stable cycling life(~90.7%capacitance retention after 10,000 cycles).This work provides new ideas in fabricating carbon-carbon architectural SICs with high energy storage for practical application.

Metal-Decorated Porous Organic Polymers:Bridged the Gap between Organic and Inorganic Scaffolds

Advanced functionalization-decorated porous organic polymers(POPs)are emerging as a prominent research focus,spanning from their construction to applications in gas storage and separation,catalysis,energy storage,electrochemistry,and other areas.Furthermore,the inherent organic nature,tailored pore structures,and adjustable chemical components of POPs offer a versatile platform for the incorporation of various metal active sites.Meticulously designed molecular building blocks can serve as organic ligands uniformly distributed throughout POPs,leading to the effective isolation of inorganic metal active sites at the molecular level.In this manner,POPs containing active metal centers bridge the gap between organic and inorganic scaffolds.This review aims to provide an overview of recent research progress on metal-decorated POPs,focusing on strategies for incorporating metal active sites into POPs and their applications in adsorption,separation,catalysis,and photoelectrochemistry.Finally,current challenges and future prospects are discussed for further research.