A structural and morphological transformation of a hydrogen-bonded organic framework (HOF) based on 1,3,5-benzentricarboxylic acid (H₃BTC) is observed. With the introduction of metal cations, especially Co(II) ion, these weaker hydrogen bonds linked in this bulk HOF of BTC can be easily broken to obtain the ultrathin wire-shaped product, denoted as Co-Fiber. That is mainly for the reason that the divalent cobalt ions with modest polarity exhibit moderate disturbance and destruction to H-bonding networks. Following calcination and phosphatization, abundant HOF-derived porous carbon-coated CoP particles in CoP/NCNT/PC inherit the morphology of Co-Fiber and endow with in-situ formed N-doped multi-walled carbon nanotubes. Initial electrochemical activation of the CoP/NCNT/PC catalyst promotes the formation of the electrocatalytically active species of cobalt oxyhydroxide for efficient oxygen evolution reaction (OER) in 1.0 M KOH aqueous solution. The obtained CoP/NCNT/PC composite exhibits an outstanding OER performance with the low overpotential of 282 mV at 10 mA cm⁻², the relatively small Tafel value (103.7 mV dec⁻¹), and the long-term durability remaining 90.5% over 10 h. The reasonable and facile method to synthesize low-cost, efficient and robust CoP/NCNT/PC shows great potential to substitute noble-metal based electrocatalysts for OER. Meanwhile, it will provide a new way for the application of HOF-derived carbon nanomaterials in the new energy field.

_{观察到基于 1,3,5-苯三羧酸 (H 3} BTC)的氢键有机骨架 (HOF) 的结构和形态转变。随着金属阳离子，特别是Co(II)离子的引入，这些在BTC的体HOF中连接的较弱的氢键可以很容易地断裂，从而获得超细的线状产品，称为Co-Fiber。这主要是因为具有适度极性的二价钴离子对氢键网络表现出适度的干扰和破坏。在煅烧和磷化后， CoP/NCNT/PC中丰富的 HOF 衍生多孔碳包覆 CoP 颗粒继承了Co-Fiber的形态并赋予原位形成了N掺杂的多壁碳纳米管。CoP/NCNT/PC催化剂的初始电化学活化促进了羟基氧化钴的电催化活性物质的形成，用于在 1.0 M KOH 水溶液中进行有效的析氧反应 (OER)。得到的CoP/NCNT/PC复合材料表现出出色的 OER 性能，在 10 mA cm ^-2时具有 282 mV 的低过电位，相对较小的 Tafel 值（103.7 mV dec ^-1），长期耐久性保持在 90.5% 以上。 10 小时。合成低成本、高效、稳健的CoP/NCNT/PC的合理简便方法显示出替代贵金属基电催化剂用于 OER 的巨大潜力。同时，也将为HOF衍生的碳纳米材料在新能源领域的应用提供一条新途径。