An organic molecular electrode (OME) is obtained, in which the polyhydric organic molecules (3,4,5-trihydroxybenzamide, THBA) act as a guest molecule to decorate graphene hydrogel (rGO₁). The THBA acts as a spacer to prevent the rGO sheet from aggregation and provides an active center for OME. In the three-electrode configuration, the prepared OME (rGO₁-THBA) presents a capacitance of 390.6 F g^–1 and has a capacitance retention of 73.7% even when the scanning rate increases from 5 to 100 mV s^–1. Furthermore, we synthesize an organic molecule 1,4,5,8-naphthalenetetracarboxylic diimide (NDP) and immobilize it onto the rGO surface to form another OME (rGO-NDP) as the counter electrode. An all-carbon asymmetric supercapacitor (rGO₁-THBA//rGO-NDP: ASC) is constructed by using rGO₁-THBA and rGO-NDP as the positive and negative electrodes, respectively. The resultant device achieves a capacitance of 70.8 F g^–1 and delivers an energy density of 14 W h kg^–1, supplying the power of 590 W kg^–1. More importantly, the two asymmetric devices in series connection are able to light up 24 LED lights for 100 s.

中文翻译：

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用于全碳不对称超级电容器应用的有机分子功能化还原氧化石墨烯

获得有机分子电极（OME），其中多羟基有机分子（3,4,5-三羟基苯甲酰胺，THBA）作为客体分子来装饰石墨烯水凝胶（rGO ₁）。THBA 充当间隔物以防止 rGO 片聚集并为 OME 提供活性中心。在三电极配置中，制备的 OME ( rGO ₁ -THBA) 的电容为 390.6 F g ^–1，即使扫描速率从 5 mV s ^–1增加到 100 mV s ^–1时，电容保持率为 73.7% 。此外，我们合成了一种有机分子 1,4,5,8-萘四甲二亚胺 (NDP) 并将其固定在 rGO 表面以形成另一个 OME (rGO-NDP) 作为对电极。全碳不对称超级电容器（rGO₁ -THBA//rGO-NDP: ASC) 分别使用rGO ₁ -THBA 和 rGO-NDP 作为正极和负极构成。由此产生的器件实现了 70.8 F g ^–1的电容，并提供了 14 W h kg ^–1的能量密度，提供了 590 W kg ^–1的功率。更重要的是，串联的两个非对称器件能够点亮 24 个 LED 灯 100 秒。