Fabrication of stable, reproducible and reusable reference electrodes for low energy and high-temperature steam splitting is of great interest for hydrogen fuel production without anthropogenic carbon dioxide (CO₂) emission. This study has been conducted for the detection of suitable material for the fabrication of novel reference electrode. In the present scenario, this research is designed to fabricate a novel nickel reference electrode by using operating conditions of eutectic molten hydroxide (NaOH-KOH, 49–51 mol%) at temperature 300 °C in an ion-conducting membrane of alumina and mullite tube. Afterwards, the designed nickel reference electrode has been examined for its reusability and stability by using electrochemical technique and cyclic voltammetry. Five scans of cyclic voltammetry are performed for both membrane fabricated reference electrode. A slight positive shift in oxidation peaks is observed for mullite membrane electrode (64 mV from scan 1 to 5). The stability measurements are noted by changing the scan rate between 50 and 150 mV s⁻¹. Furthermore, the results show that the Ni/Ni(OH)₂ reference electrode covered with a mullite membrane is stable and reusable at 300 °C temperature without any deterioration. The stability and reusability of prepared nickel reference electrode covered by mullite tube in the eutectic molten hydroxide were up to 9 days to carry out an electrochemical investigation, while for alumina tube reference electrode the stability and reliability were up to 3 days. The internal electrolytic material and ionic conductance can play an important role for future studies with this reference electrode along with optimisation of temperature and scan rate parameters.

稳定，可重现和可重复使用的参比电极，用于低能量和高温蒸汽裂解，对于没有人为二氧化碳（CO _2）的氢燃料生产非常重要）发射。已经进行了这项研究以检测用于制造新型参比电极的合适材料。在目前的情况下，这项研究旨在通过在300℃的温度下在氧化铝和莫来石的离子传导膜中使用低共熔熔融氢氧化物（NaOH-KOH，49-51 mol％）的操作条件来制造新型镍参比电极管。然后，使用电化学技术和循环伏安法检查了设计的镍参比电极的可重复使用性和稳定性。对两个膜制造的参比电极进行五次循环伏安法扫描。对于莫来石膜电极观察到氧化峰的轻微正移（从扫描1至5为64mV）。通过在50至150 mV s之间更改扫描速率来记录稳定性测量结果^-1。此外，结果表明，被莫来石膜覆盖的Ni / Ni（OH）₂参比电极在300℃的温度下稳定且可重复使用而没有任何劣化。制备的由莫来石管覆盖的镍参比电极在共晶熔融氢氧化物中的稳定性和可重复使用性长达9天，以进行电化学研究，而对于氧化铝管参比电极，其稳定性和可靠性则高达3天。内部的电解质材料和离子电导率在使用该参比电极以及优化温度和扫描速率参数的未来研究中可以发挥重要作用。