The use of polyvinylidene fluoride (PVDF) as a binder was investigated in order to prepare the active carbon catalyst and carbon black diffusion layers of a microbial fuel cell cathode. Compared with other binders, PVDF performed competitively as it did not require a lengthy curing time and high curing temperature. Results of XRD characterization showed that the typical β-PVDF was enhanced as PVDF content ratio increased. SEM results indicated that the catalyst layer easily peeled off due to the low binder concentration of binder, but the high binder content was deemed undesirable because the large amount of non-conductive PVDF interrupted the percolation path. The optimum binder concentration was double checked using Tafel and EIS tests. Results indicated that the cathode with 10% PVDF is the optimum operated concentration. The cathode can obtain 180 mV of cathode potential and the smallest total impedance of 2500 Ω, which are consistent with the SEM analysis. Moreover, the cathode with 10% PVDF concentration produced a maximum power density of 1600 mWm^− 2, suggesting that PVDF can compete with other traditional binders.

为了制备微生物燃料电池阴极的活性炭催化剂和炭黑扩散层，研究了使用聚偏二氟乙烯（PVDF）作为粘合剂的情况。与其他粘合剂相比，PVDF具有竞争优势，因为它不需要较长的固化时间和较高的固化温度。XRD表征结果表明，典型的β-PVDF随着PVDF含量比的增加而增强。SEM结果表明，由于粘合剂的粘合剂浓度低，催化剂层容易剥离，但是由于大量的非导电PVDF中断了渗透路径，因此认为粘合剂的高含量是不希望的。使用Tafel和EIS测试对最佳粘合剂浓度进行了两次检查。结果表明，具有10％PVDF的阴极是最佳操作浓度。阴极可获得180 mV的阴极电势，最小总阻抗为2500Ω，这与SEM分析一致。此外，PVDF浓度为10％的阴极产生的最大功率密度为1600 mWm^{− 2}，表明PVDF可以与其他传统粘合剂竞争。