大容量储能装置正受到广泛的研究关注。然而,由于天气寒冷,这些设备的容量下降是其实际使用的巨大障碍。在这项研究中,提出了一种电化学自适应重构的基于CuxS/Cu(OH)2的对称储能装置。该装置在太阳辐射下提供令人满意的增强的光热容量。电化学重建处理后,形态结构重排,并引入大量活性位点,将CuxS组分部分转化为电化学活性的Cu(OH)2。所得的CuxS/Cu(OH)2电极在5mAcm-2下提供115.2Fcm-2的显著电容。更重要的是,其宽的工作电位范围和优越的光热转换能力赋予CuxS/Cu(OH)2作为全用光热增强电容电极的卓越性能。在太阳辐射下,CuxS/Cu(OH)2的表面温度仅在30s内升高了76.6°C,并且电容在低温下被提升到原始电容的230.4%。此外,组装的对称储能装置在15分钟的太阳辐射下还提供了2003%的光热容增强。
Large-capacity energy storage devices are attracting widespread research attention. However, the decreased capacity of these devices due to cold weather is a huge obstacle for their practical use. In this study, an electrochemical self-adaptive reconstructed Cux S/Cu(OH)2 -based symmetric energy storage device is proposed. This device provides a satisfactorily enhanced photothermal capacity under solar irradiation. After electrochemical reconstruction treatment, the morphological structure is rearranged and the Cux S component is partially converted to electrochemically active Cu(OH)2 with the introduction of a large number of active sites. The resulting Cux S/Cu(OH)2 electrode provides a significant capacitance of 115.2 F cm-2 at 5 mA cm-2 . More importantly, its wide working potential range and superior photo-to-thermal conversion ability endow Cux S/Cu(OH)2 with superb performance as full-purpose photothermally enhanced capacitance electrodes. Under solar irradiation, the surface temperature of Cux S/Cu(OH)2 is elevated by 76.6 °C in only 30 s, and the capacitance is boosted to 230.4% of the original capacitance at a low temperature. Furthermore, the assembled symmetric energy storage device also delivers a photothermal capacitance enhancement of 200.3% under 15 min solar irradiation.