Zn-doped Mn₃O₄ with lattice distortion as flexible cathode for zinc-ion hybrid supercapacitor

作者：Shengjuan Li, Shengjuan Li, Qian He, Fengyan Gao, Henghan Liu, Huifeng Gao, Yuhua Xue, Lei Li · 发表于：Journal of Alloys and Compounds · 年份：2024 · DOI：10.1016/j.jallcom.2024.177895 · 被引用次数：15 · 研究领域：Supercapacitor Materials and Fabrication、Advanced battery technologies research、Advancements in Battery Materials

One of the major challenges in developing aqueous zinc-ion hybrid supercapacitors (ZHSCs) is maintaining high performance with a high loading of cathode materials . In the present work, Zn-doped Mn₃O₄ (Zn-Mn₃O₄) nanoparticles with lattice distortion were successfully synthesized on flexible carbon cloth with a high loading up to 11 mg cm⁻² through electrodeposition . The as-prepared aqueous ZHSC with the cathode of Zn-Mn 3 O 4 presented a superior areal capacitance of 3135.3 mF cm⁻² at 2 mA cm⁻² and good stability with 75.35 % capacity retention after 1000 cycles. Furthermore, the engineered quasi-solid-state ZHSC using Zn-Mn 3 O 4 -0.5 demonstrated high mechanical flexibility and excellent capacity retention across different bending angles, thereby making them attractive candidates for the next generation of flexible wearable devices.