MOF衍生的磷化钴纳米纤维用于电催化氧析出和氢析出反应  

Cobalt phosphide nanofibers derived from metal-organic framework composites for oxygen and hydrogen evolutions

作　　者：邹联力 魏永生 王秋菊 刘铮 徐强 Susumu Kitagawa Lianli Zou;Yong-Sheng Wei;Qiuju Wang;Zheng Liu;Qiang Xu;Susumu Kitagawa(AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory(ChEM-OIL),National Institute of Advanced Industrial Science and Technology(AIST),Kyoto 606-8501,Japan;Innovative Functional Materials Research Institute,National Institute of Advanced Industrial Science and Technology(AIST),Aichi 463-8560,Japan;Institute for Integrated Cell-Material Sciences(WPI-iCeMS),Kyoto University,Kyoto 606-8501,Japan;Institute for Advanced Materials,School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM),SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory(SKAEM-JIL),Department of Chemistry and Department of Materials Science and Engineering,Southern University of Science and Technology(SUSTech),Shenzhen 518055,China)

机构地区：[1]AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory(ChEM-OIL),National Institute of Advanced Industrial Science and Technology(AIST),Kyoto 606-8501,Japan [2]Innovative Functional Materials Research Institute,National Institute of Advanced Industrial Science and Technology(AIST),Aichi 463-8560,Japan [3]Institute for Integrated Cell-Material Sciences(WPI-iCeMS),Kyoto University,Kyoto 606-8501,Japan [4]Institute for Advanced Materials,School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China [5]Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM),SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory(SKAEM-JIL),Department of Chemistry and Department of Materials Science and Engineering,Southern University of Science and Technology(SUSTech),Shenzhen 518055,China

出　　处：《Science China Materials》2023年第8期3139-3145,共7页中国科学（材料科学（英文版）

基　　金：This work was financially supported by the National Institute of Advanced Industrial Science and Technology(AIST),Jiangsu University(4023000046);Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM)(ZDSYS20210709112802010);China Postdoctoral Science Foundation(2022TQ0126 and 2022M721375);Guangdong Grants(2021ZT09C064);the National Key Research and Development Project(2022YFA1503900).

摘　　要：高性能催化剂的开发和利用是能源领域的研究热点,其中制备具有高活性面积的一维纳米催化剂是目前的难点.本研究以金属有机框架(MOF)复合纤维为前驱体,通过热处理-磷化过程制备了具有氧析出(OER)和氢析出(HER)双功能特性的CoP纳米纤维.该MOF衍生策略也可以用来制备其他一维纳米材料,如Co_(3)O_(4)纳米纤维、Co/C纤维和CoP/C复合纤维.研究表明,CoP纳米纤维的直径约100 nm,长度可达几微米,具有较高的活性面积.通过Cu掺杂改性可以提高CoP纳米纤维的催化活性,碱性条件下测得其对OER和HER的过电位分别为330和170 mV,可与商业的贵金属催化剂相媲美.该工作也为一维双功能电极催化剂的制备及功能化提供了研究基础.The fabrication of one-dimensional(1D)nanocatalysts with high active surface areas is very important to the development of high-performance catalysts but challenging.Through the phosphidation of metal-organic framework(MOF)nanofiber(NF)composites,bifunctional cobalt phosphide NFs(CoP NFs)which showed a diameter of about 100 nm and length of several micrometers as well as a large catalytic surface area were successfully fabricated and used as the electrocatalysts for water splitting.Taking the advantage of this MOF-derived strategy,a series of 1D nanostructures including Co_(3)O_(4)NFs,and carbon NFs immobilized with CoP or Co nanoparticles were also synthesized and investigated.The density of active sites and catalytic performances of CoP NFs could be improved by the modulation of Cu-related species.The uniform Cu-doped CoP NFs showed the best catalytic performances for both oxygen and hydrogen evolutions with the overpotentials of 330 and 170 mV,respectively,which are comparable to those of commercial noble-metal catalysts.This work provides a facile process to fabricate 1D bifunctional electrocatalysts with desired functionalities for energy-related applications.

关 键 词：金属有机框架 贵金属催化剂 磷化过程 纳米纤维 复合纤维 电催化 过电位 一维纳米材料 

分 类 号：TQ116.2[化学工程—无机化工] TQ426[一般工业技术—材料科学与工程] TB383.1