One-dimensional conductive Ni3(HHTP)2 @ woven fabrics with controlled engineering design towards high-efficiency EDL electrodes

In this work, one-dimensional (1D) conductive MOFs Ni3(HHTP)2 with nanorod-like morphology on the surface of a woven fabric was synthesized by an in-situ growth method. Based on a three-electrode system, the effects of substrate concentration, scan rate and current density on electrode properties were investigated, respectively. The results showed that Ni3(HHTP)2 @ woven fabric-3 (NHWF-3) demonstrated the largest area capacitance at 5 mV s-1 and reached up to 360 mu F cm-2 at 20 mu A cm-2. Most importantly, the material still maintained 58.3% (210 mu F cm-2) of the initially areal specific capacitance when the current density was increased 5 times to 100 mu A cm-2. According to the electrochemical impedance spectroscopy (EIS) curve, NHWF-3 has the smallest semicircle radius in the high-frequency region, indicating that it has the lowest internal transfer resistance and the best conductivity. Thus, this study provides a good example for the simple preparation and practical ap-plications of conductive MOFs composites.

Automated summary

In this study, one-dimensional conductive MOFs Ni3(HHTP)2 with nanorod-like morphology on the surface of a woven fabric were synthesized using an in-situ growth method. The effects of substrate concentration, scan rate, and current density on electrode properties were investigated using a three-electrode system. The results showed that the material demonstrated excellent area capacitance and maintained a high percentage of specific capacitance even at increased current density. The study also revealed that the material had the lowest internal transfer resistance and the best conductivity.