This study deals with the utility of mini spray dryer process to improve the dispersibility, of graphene oxide(GO) and its application for high‐performance supercapacitor. Initially, the neutral solution of GO was obtained using the modified Hummer's method. After this, the prepared GO solution was processed by mini spray dryer to obtain a more purified, lighter, and dispersed form of GO which is named as spray dryer processed GO (SPGO). The SPGO thus obtained showed excellent dispersibility behavior with various solvents, which is not found in case of conventional oven drying. Furthermore, utility of SPGO and its reduced form (r‐SPGO) for supercapacitor applications have been investigated. Results obtained from the cyclic voltammetry(CV) analysis, impedance, and charge‐discharge behavior of supercapacitor fabricated using r‐SPGO shows enhanced features. Therefore, the simple spray dried GO and its reduced form, that is, r‐SPGO can be utilized as a potential candidate for the supercapacitor application. Herein, as synthesized SPGO exhibited the specific capacitance of 12.07 and 37.6 F/g with PVA‐H₃PO₄ and 1 mol/L H₃PO₄, respectively, at a scan rate of 5 mV/s. On the other hand, reduced form of SPGO, that is, r‐SPGO showed the specific capacitance of 27.16 and 230 F/g with PVA‐H₃PO₄ and 1 mol/L H₃PO₄, respectively.

中文翻译：

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喷雾干燥器处理的氧化石墨烯/还原的氧化石墨烯，用于高性能超级电容器

这项研究探讨了利用小型喷雾干燥机工艺来改善氧化石墨烯（GO）的分散性及其在高性能超级电容器中的应用。最初，使用改良的Hummer方法获得GO的中性溶液。此后，将制备的GO溶液通过微型喷雾干燥器进行处理，以获得更纯净，更轻和分散的GO形式，称为喷雾干燥器处理的GO（SPGO）。这样得到的SPGO在各种溶剂中显示出优异的分散性，这在常规烘箱干燥的情况下是没有的。此外，还研究了SPGO的效用及其简化形式（r-SPGO）在超级电容器中的应用。从循环伏安法（CV）分析，阻抗，使用r-SPGO制造的超级电容器的充放电行为表现出增强的功能。因此，简单的喷雾干燥GO及其还原形式，即r-SPGO可用作超级电容器应用的潜在候选者。在此，合成的SPGO在PVA-H下的比电容为12.07和37.6 F / g₃ PO ₄和1 mol / LH ₃ PO ₄，扫描速率为5 mV / s。另一方面，SPGO的简化形式即r-SPGO在PVA-H ₃ PO ₄和1 mol / LH ₃ PO _4下的比电容分别为27.16和230 F / g 。