Dear Manna Farrel Balboa Pinto,

I see two simple ways

1) First, you can use binder, PTFE or other. You can mix binder with your material, cover your ring and dry.

2) Second, you can use a composite material. For example cover your ring by Ni in electrochemical way. Catalyst you can add in solution for deposition and during the deposition constant stirring should be.

Hope it will be useful. 

Hi Manna,

apologies for shameful self-promotion but we have described a method in some details in our recent paper. See extract:

"Electrochemical performance was investigated using a CH Instruments CHI760D potentiostat with a three electrode setup in 1 M H2SO4 electrolyte unless otherwise stated. Following the procedure by Gao et. al, [26] the catalysts were prepared as inks and deposited on to a glassy carbon working electrode (surface area 0.071 cm2 ). This involved sonicating 1 mL water: ethanol (3:1), 80 µL Nafion and 10 mg catalyst for 1-2 hours. 30 µL of the resulting catalyst ink was then dropcasted onto the surface of the glassy carbon electrode. Platinum wire and 3 M Ag/AgCl were used as the counter and reference electrodes, respectively. The electrode potentials were therefore converted to NHE scale using E(NHE) = E(Ag/AgCl) + 0.209 V and the ohmic resistances were compensated."

REF 26: S. Gao, Y. Lin, X. Jiao, Y. Sun, Q. Luo, W. Zhang, D. Li, J. Yang and Y. Xie, Nature 2016, 529, 68–71.

Good luck,

Alexey

CA technique is very easy and simple to deposit metallic or polymeric electrocatalysts.