The development of cheap, high‐efficiency, and long‐term durable oxygen evolution reaction (OER) electrocatalysts has become a research hotspot. Carbon‐confined transition‐metal phosphides derived from coordination polymers and metal–organic frameworks have received great attention. Herein, a CoP/N‐doped carbon‐400 (CoP/NC‐400) nanowire is prepared using a coordination polymer [Co(C₄H₇NO₄)]·xH₂O (Co‐Asp, Asp = l‐aspartic acid) nanowire as the precursor and template through simultaneous pyrolysis and low‐temperature phosphidation. Electrochemical tests indicate that the CoP/NC‐400 nanowire displays better OER properties than CoP/NC‐300/500 nanowires. The overpotential required to reach a current density of 10 mA cm⁻² is 320 mV with a minimum Tafel slope of 89 mV dec⁻¹. Moreover, at a higher current density, the OER performance of the CoP/NC‐400 nanowire is superior to that of RuO₂. The excellent electrochemical performance of the CoP/NC‐400 nanowire is attributed to the high electrochemical surface area and the strong synergistic effect of the CoP nanoparticle and the N‐doped carbon nanowire.

中文翻译：

---

钴基配位聚合物衍生的CoP / N掺杂碳纳米线作为产生氧反应的高效电催化剂

廉价，高效，长期耐用的析氧反应（OER）电催化剂的开发已成为研究热点。由配位聚合物和金属有机骨架衍生的碳限制的过渡金属磷化物受到了极大的关注。在此，COP / N掺杂碳- 400（COP / NC-400）纳米线使用配位聚合物制备[CO（C ₄ H ^ ₇ NO ₄）]· X ^ h ₂ O（共-天冬氨酸，天冬氨酸= 升天冬氨酸]纳米线作为前体和模板，同时进行热解和低温磷酸化。电化学测试表明，CoP / NC-400纳米线显示出​​比CoP / NC-300 / 500纳米线更好的OER特性。达到10 mA cm ^-2的电流密度所需的过电势为320 mV，最小Tafel斜率为89 mV dec ^-1。此外，在更高的电流密度下，CoP / NC-400纳米线的OER性能优于RuO ₂。CoP / NC-400纳米线的出色电化学性能归因于CoP纳米粒子和N掺杂碳纳米线的高电化学表面积以及强大的协同作用。