Abstract
<title>Abstract</title> <p>In this work, a scalable and environmentally friendly synthesis of PAN@Sb–Ca–Ti oxides/MXene binder free electrodes is developed by hydrothermal method and interfacial integration of polyacrylonitrile (PAN). PAN is introduced as a structural scaffold and carbon precursor to achieve uniform dispersion of oxide particles, better interfacial adhesion and electron transportation. Meanwhile, MXene introduces a highly conductive 2D network, which keeps particles from agglomerating and allows for quick ion diffusion.The optimized PAN@Sb–Ca–Ti oxides/MXene electrode is revealed to have a high specific capacity (380.1 C g⁻¹ at 1 A g⁻¹), energy density (108 Wh kg⁻¹) and power density (1000W kg⁻¹) in an asymmetric configuration through electrochemical measurements. The device also shows a high cycling stability with 80% of its initial capacitance after 12,000 cycles with a coulombic efficiency of 94%, indicating its exceptional electrochemical durability.This work also shows that PAN@Sb–Ca–Ti oxides/MXene is a noble-metal-free, cost-effective and promising electrode material with high performance supercapacitor, which provides new guidance for designing multifunctional energy materials</p>