Macroporous platinum structures have been prepared by electrodeposition in the interstitial spaces between a 500 nm polystyrene sphere template, onto platinum and glassy carbon electrodes. The structures were analysed with scanning electron microscopy and confocal microscopy. These electrodes are employed for the electrochemical oxidation of hydrogen in the room temperature ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C₂mim][NTf₂]). The behaviour on the porous electrodes showed obvious thin-layer characteristics in the cyclic voltammetry, with a strong tendency for hydrogen to accumulate and remain in the pores after being removed from the cell. Plots of peak current vs concentration (10–100% H₂) were linear, but currents continued to increase over time. The sensitivities (gradients) of the calibration plots were the highest for the platinum porous structures (compared to the bare, or nanoparticle-modified surfaces). Due to the accumulation of gas, such modified electrodes could be employed as leak-detectors for very low concentrations of hydrogen.

通过在500 nm聚苯乙烯球模板之间的间隙中电沉积到铂和玻璃碳电极上，可以制备大孔铂结构。用扫描电子显微镜和共聚焦显微镜分析结构。这些电极用于在室温离子液体1-乙基-3-甲基咪唑鎓双（三氟甲基磺酰基）酰亚胺（[C ₂ mim] [NTf ₂ ]）中对氢进行电化学氧化。在循环伏安法中，多孔电极上的行为表现出明显的薄层特性，从电池中去除后，氢有很强的积累和保留在孔中的趋势。峰值电流与浓度（10–100％H ₂）是线性的，但电流随时间持续增加。对于铂多孔结构（与裸露的或纳米粒子改性的表面相比），校准图的灵敏度（梯度）最高。由于气体的积聚，这种修饰的电极可以用作非常低浓度的氢气的检漏仪。