【摘要】 锌离子超级电容器（ZISC）凭借成本低廉、安全性高及环境友好等优势备受关注，已成为储能领域的研究热点。然而，其能量密度偏低、循环稳定性欠佳的问题仍亟待解决，开发高性能阴极材料是突破上述局限的关键。本研究采用简易方法合成无黏结剂电化学剥离炭纸（EECP），通过引入氧官能团调控炭纸表面特性，显著提升其赝电容性能。将EECP用作锌离子超级电容器阴极时，可提供较大比表面积与快速电荷转移通道，使器件展现出优异的电荷存储性能，且以电容型电荷存储机制为主导；在10 mV/s扫速下，容量保留率达78.8%。此外，EECP电极在1 A/g电流密度下的最大电容为252.5 F/g，经10 000次循环后仍可保留81.7%的电容。本研究进一步构建了以EECP为正极、金属锌为负极、1 mol/L硫酸锌溶液为电解液的锌离子超级电容器，该器件在1 A/g电流密度下的电容达186.22 F/g，经10 000次循环后容量保留率高达97.01%，其能量密度与功率密度分别达到46.6 Wh/kg和500.4 W/kg。综上，EECP材料具备优异的综合性能，适用于下一代高功率锌离子超级电容器的研发。更多还原

【Abstract】 Zinc-ion supercapacitors（ZISCs） have received considerable interest for energy storage because of their low cost, high safety,and minimal environmental impact. However, they have a low energy density and poor cycling performance. The design of a better cathode material is needed to overcome these limitations. A simple method was used to synthesize binder-free electrochemically exfoliated carbon paper（EECP） which modifies the surface of the paper by introducing oxygen functional groups and thus improves its pseudocapacitance. When used in a Zn-ion supercapacitor（ZISC）, an EECP-based cathode provides a large surface area and quick charge transfer. As a result, the ZISC had remarkable charge storage properties and had a dominant capacitive-type charge storage mechanism with 78.8% retention of capacity at 10 mV/s of the total storage. Furthermore, at 1 A/g, the EECP electrode had a maximum capacitance of 252.5 F/g. The EECP electrode retained 81.7% of its capacitance after 10 000 cycles, indicating its promise for use in the growing renewable energy sector. A ZISC was also constructed using EECP as the positive electrode and Zn as the negative electrode with a 1 mol L^-1 ZnSO₄ electrolyte. It had a capacitance of 186.22 F/g at 1 A/g and a 97.01% retention rate after 10 000 cycles. It also had an excellent energy density of 46.6 Wh/kg at a power density of 500.4 W/kg. The material is therefore suitable for use in high-rate next-generation ZISCs.更多还原