Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 30, 2025

Abstract The electrochemical properties are influenced by the surface‐active sites and porosity of materials in solid‐state asymmetric supercapacitor (SSASC) devices. Transitioning from two‐dimensional (2D) bulk to three‐dimensional (3D)‐printed electrodes for high‐performance SSASCs remains both exciting challenging. This work, first time, introduces a novel oxygen‐rich Co 3 O 4 /CeO 2 nanocomposite (CCNC) ink with optimized rheological constructing vertically aligned (3‐layer 5‐layer) direct writing (DIW) 3D‐printed SSASC porous architectures. 5‐layer CCNC (3DP‐5LCCNC) device demonstrates remarkable mass loading 18.61 mg cm −2 , achieving an excellent areal capacitance 7.09 F . 3DP‐5LCCNC is ≈8.7 times greater than that (0.82 ) 1.47 higher 3DP‐3LCCNC (4.8 ). Furthermore, electrode exhibits exceptional energy density 2.366 mWh significantly surpassing (0.273 (1.626 enhancement attributed architecture, facilitating ion transport enhances kinetic reactions. work presents innovative approach formulation provides framework designing rapid transportation outstanding advanced storage

Язык: Английский