Alongside rare‐earth metals, Ni, Fe, Co, Cu are some of the critical materials that will be in huge demand thanks to growth in clean‐energy sector. Herein scrap stainless steel wires (SSW) from worn‐out tires are employed as a support material for catalyst integration in the hydrogen evolution reaction (HER). In addition, SSW by corrosion engineering is exercised as an in situ formed freestanding robust electrode for the oxygen evolution reaction (OER). By superficial corrosion of SSW, inherent active species are unmasked in the form of Ni/FeOOH nanocrystallites displaying efficient water oxidation by reaching 500 mA cm⁻² at low overpotential (η₅₀₀) of 287 mV in 1 m KOH. Similarly, cathode scrap SSW with active (alloy) coatings of MoNi₄ catalyzes the HER at η_‐200 = 77 mV, with a low activation energy (E _a = 16.338 kJ mol⁻¹) and high durability of 150 h. Promisingly, when used in industrial conditions, 5 m KOH, 343 K, these electrodes demonstrate abnormal activity by yielding high anodic and cathodic current density of 1000 mA cm⁻² at η = 233 mV and η = 161 mV, respectively. This work may inspire researchers to explore and reutilize high‐demand metals from scrap for addressing critical material shortfalls in clean‐energy technologies.

中文翻译：

---

高电流密度电极高效分水的合理设计中的腐蚀与合金工程

除稀土金属外，由于清洁能源行业的增长，镍，铁，钴，铜是一些需求巨大的关键材料。在此，将废旧轮胎的废不锈钢丝（SSW）用作支撑剂，以将催化剂整合到析氢反应（HER）中。另外，通过腐蚀工程进行的SSW被用作原位形成的用于氧气析出反应（OER）的独立式坚固电极。通过SSW的浅腐蚀，固有活性物质是在镍/纳米晶的FeOOH通过到达500毫安厘米显示高效的水氧化的形式未掩蔽^-2在低超电势（η ₅₀₀ 287毫伏在1个）米KOH。同样，带有MoNi ₄活性（合金）涂层的废阴极SSW在η‐ ₂₀₀ = 77 mV时催化HER ，具有低活化能（E _a = 16.338 kJ mol ^-1）和150 h的高耐久性。很有可能，当在5 m KOH，343 K的工业条件下使用时，这些电极通过在η= 233 mV和η= 161 mV时分别产生1000 mA cm ^-2的高阳极和阴极电流密度，表现出异常的活性。这项工作可能会激发研究人员探索和重新利用废料中的高需求金属，以解决清洁能源技术中的关键材料短缺问题。