首页|用于氧还原反应的氮掺杂空心多孔碳球封装的过渡金属氮化物的制备和性能

用于氧还原反应的氮掺杂空心多孔碳球封装的过渡金属氮化物的制备和性能

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通过浸渍和热处理方法制备一系列氮掺杂空心多孔碳球(NHPCS)封装的过渡金属氮化物(MxNy,M=Fe,Co,Ni)纳米颗粒复合材料.此纳米复合材料兼具氮化物的高催化活性和氮掺杂多孔碳球的高效传质特性.氧气还原反应结果表明,Fe2N/NHPCS表现出优异的催化性能,其具有较高的起始电位(0.96 V)、电子转移数(～4)和极限电流密度(为工业Pt/C的1.4倍).此外,该材料作为锌−空气电池的空气催化剂,表现出与Pt/C相媲美的比容量(795.1 mA·h/g)、更优的耐久性和最大的功率密度(173.1 mW/cm2).
Preparation and properties of transition metal nitrides caged in N-doped hollow porous carbon sphere for oxygen reduction reaction
A series of transition metal nitrides (MxNy, M=Fe, Co, Ni) nanoparticle (NP) composites caged in N-doped hollow porous carbon sphere (NHPCS) were prepared by impregnation and heat treatment methods. These composites combine the high catalytic activity of nitrides and the high-efficiency mass transfer characteristics of NHPCS. The oxygen reduction reaction results indicate that Fe2N/NHPCS has the synergistic catalytic performance of higher onset potential (0.96 V), higher electron transfer number (～4) and higher limited current density (1.4 times as high as that of commercial Pt/C). In addition, this material is implemented as the air catalyst for zinc−air battery that exhibits considerable specific capacity (795.1 mA·h/g) comparable to that of Pt/C, higher durability and maximum power density (173.1 mW/cm2).

N-doped porous carbontransition metal nitridesZn−air batteryoxygen reduction reactionfuel cell

李彦娟、王敏、刘飒、高京夏、杨舜、刘子豪、赖小勇、闫霄

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江苏师范大学 化学与材料科学学院 江苏省功能材料绿色合成化学重点实验室,徐州 221116

宁夏大学 化学化工学院 煤炭高效利用与绿色化工国家重点实验室,银川 750021

氮掺杂多孔碳 过渡金属氮化物 锌−空气电池 氧还原反应 燃料电池

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu Province,ChinaPriority Academic Program Development of Jiangsu Higher Education Institutions,ChinaFoundation of State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering,China

5170213751802128BK2018101318KJB4300132020-KF-20

2021

10.1016/S1003-6326(21)65587-5

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(5)
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