In this study, an amine-coordinated cobalt phthalocyanine (CoPc)-based anodic catalyst was fabricated by a facile process, to enhance the performance of hydrogen peroxide fuel cells (HPFCs) and enzymatic biofuel cells (EBCs). For this purpose, polyethyleneimine (PEI) was added onto the reduced graphene oxide and CoPc composite (RGO/CoPc) to create abundant NH₂ axial ligand groups, for anchoring the Co core within the CoPc. Owing to the PEI addition, the onset potential of the hydrogen peroxide oxidation reaction was shifted by 0.13 V in the negative direction (0.02 V) and the current density was improved by 1.92 times (1.297 mA cm⁻²), compared to those for RGO/CoPc (0.15 V and 0.676 mA cm⁻², respectively), due to the formation of donor–acceptor dyads and the prevention of CoPc from leaching out. The biocatalyst using glucose oxidase (GOx) ([RGO/CoPc]/PEI/GOx) showed a better onset potential and catalytic activity (0.15 V and 318.7 μA cm⁻²) than comparable structures, as well as significantly improved operational durability and long-term stability. This is also attributed to PEI, which created a favorable microenvironment for the enzyme. The maximum power densities (MPDs) and open-circuit voltages (OCVs) obtained for HPFCs and EBCs using the suggested catalyst were 105.2 ± 1.3 μW cm⁻² (0.317 ± 0.003 V) and 25.4 ± 0.9 μW cm⁻² (0.283 ± 0.007 V), respectively. This shows that the amine axial ligand effectively improves the performance of the actual driving HPFCs and EBCs.

在这项研究中，通过简便的方法制备了胺配位的钴酞菁钴（CoPc）基阳极催化剂，以增强过氧化氢燃料电池（HPFC）和酶促生物燃料电池（EBC）的性能。为此，将聚乙烯亚胺（PEI）添加到还原的氧化石墨烯和CoPc复合材料（RGO / CoPc）上，以创建丰富的NH ₂轴向配体基团，以将Co核锚定在CoPc内。由于加入了PEI ，与RGO相比，过氧化氢氧化反应的起始电位在负方向（0.02 V）上偏移了0.13 V，电流密度提高了1.92倍（1.297 mA cm ^-2）。 / CoPc（0.15 V和0.676 mA cm ^-2），这是由于形成了供体-受体二元组并防止CoPc浸出。使用葡萄糖氧化酶（GOx）（[RGO / CoPc] / PEI / GOx）的生物催化剂显示出比同类结构更好的起始电势和催化活性（0.15 V和318.7μAcm ^-2），并显着提高了操作耐久性和使用寿命长期稳定性。这也归因于PEI，它为酶创造了良好的微环境。使用建议的催化剂获得的HPFC和EBC的最大功率密度（MPD）和开路电压（OCV）为105.2±1.3μWcm ^-2（0.317±0.003 V）和25.4±0.9μWcm ^-2（0.283±0.007 V）。这表明胺轴向配体有效地改善了实际驱动HPFC和EBC的性能。