掺硼碳材料的制备新方法及其电催化性能研究  

A new method for preparing boron-doped carbon materials and electrocatalytic properties

作　　者：李婧[1] 索妮 何洋洋 黄昊[1] 张贵锋[1] LI Jing;SUO Ni;HE Yang-yang;HUANG Hao;ZHANG Gui-feng(School of Materials Science and Engineering,Dalian University of Technology,Dalian Liaoning 116024,China;School of Physics and Materials Engineering,Dalian Nationalities University,Dalian Liaoning 116600,China)

机构地区：[1]大连理工大学材料科学与工程学院,辽宁大连116024 [2]大连民族大学物理与材料工程学院,辽宁大连116600

出　　处：《电源技术》2019年第12期1951-1954,共4页Chinese Journal of Power Sources

基　　金：中央高校基本科研专项资金(DUT17ZD101);国家自然科学基金(51171033);国家重点研发计划(2016YFB0101206)

摘　　要：采用液相电化学沉积技术,分别以甲醇溶液和B2O3为碳和硼源,以硅粉作为成核剂,成功地制备了掺硼碳材料。透射电子显微镜(TEM)分析表明所制备的碳材料在基体表面呈现不均匀分布,傅里叶变换红外光谱法(FTIR)和X射线光电子能谱(XPS)分析证实硼以原子态的形式存在于制备的碳材料中。电催化性能测试表明所制备的掺硼碳材料在-0.4 V附近有明显的氧还原峰,而且随着B2O3添加量的增加,样品氧还原反应的催化活性显著提高,平均转移电子数从未掺硼的2.2增加到3.7,且抗甲醇性能和耐久性相较于Pt/C有大幅度提升。Boron-doped carbon materials were successfully prepared by liquid-phase electrochemical deposition respectively using methanol solution and B2O3 as carbon and boron sources,and silicon powder as nucleating agent.TEM analysis shows that the prepared carbon materials exhibit non-uniform distribution on the surface of the silicon.FTIR and XPS analyses confirmed that boron element existed in the prepared carbon materials in the form of atomic states.The electrocatalytic performance test showed that the prepared boron-doped carbon materials had obvious redox peak near-0.4 V.With the increase of B2O3 additive,the catalytic activity for the oxygen reduction reaction increased remarkably.The average number of transferred electrons and the peak of the current density increased from 2.2 to 3.7.Compared with Pt/C,the methanol resistance and durability of the prepared boron doped carbon materials have been greatly improved.

关 键 词：液相电化学沉积 硼掺杂碳材料 直接甲醇燃料电池 阴极催化剂材料 氧还原反应 

分 类 号：TM911[电气工程—电力电子与电力传动]