燃料电池阳极非铂Ir基催化剂的研究

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英文篇名：Ir-based platinum-free catalyst for hydrogen oxidation reaction of fuel cells 作者：陶思成 ; 史瑞祥 ; 谢鑫 ; 李伟 英文作者：TAO Si-cheng;SHI Rui-xiang;XIE Xin;LI Wei;Shenzhen Yupeng New Energy Vehicle Test & Research Co., Ltd.;National Coach Quality supervision & Testing center;Shenzhen BYD Lithium Battery Co., Ltd.,Kengzi Branch; 关键词：燃料电池 ; 氢氧化 ; Ir基 ; 柠檬酸钠 ; 有机聚合物薄膜 英文关键词：fuel cell;;hydrogen oxidation reaction;;Ir base;;sodium citrate;;organic polymer film 中文刊名：电源技术 英文刊名：Chinese Journal of Power Sources 机构：深圳渝鹏新能源汽车检测研究有限公司;国家客车质量监督检验中心;深圳市比亚迪锂电池有限公司坑梓分公司; 出版日期：2019-08-20 出版单位：电源技术 年：2019 期：08 语种：中文; 页：98-101 页数：4 CN：12-1126/TM ISSN：1002-087X 分类号：TM911.4

摘要

用柠檬酸钠作为表面活性剂,通过有机聚合物薄膜平面蒸干法制备了新型Ir/C催化剂(N-Ir/C),作为阴离子交换膜燃料电池的阳极氢氧化(HOR)催化剂。实验结果表明:该方法制备的N-Ir/C催化剂的颗粒粒径得到了有效的控制,且分散性好,HOR催化活性、稳定性得到显著提高。在碱性介质中,N-Ir/C催化剂在0.05 V(vs.RHE)下的表观比活性达到了2.046 m A/cm~2,表现出了与Pt基催化剂相媲美的催化活性;在恒电位0.25 V vs. RHE下,N-Ir/C催化剂的催化活性在1 h后仅仅下降了4.3%,其稳定性显著优越于传统方法制备的Ir/C催化剂。
        A new type of Ir/C catalyst(N-Ir/C), as anode hydrogen oxidation reaction(HOR) catalyst for anion-exchange membrane fuel cell, was prepared by using sodium citrate as a surfactant through planar evaporation of organic polymer thin film. The experimental results show that the particle size of N-Ir/C catalyst is effectively controlled with good dispersion. Moreover, the HOR activity and stability of N-Ir/C catalyst are significantly improved. In alkaline medium, the specific activity of N-Ir/C catalyst is as high as 2.046 m A/cm~2 at 0.05 V(vs.RHE),which is comparable with the commercial Pt Ru/C catalyst. At the constant voltage of 0.25 V vs. RHE, the HOR activity of N-Ir/C catalyst decreases only by 4.3% after 1 h, which is significantly superior to that of the traditional prepared Ir/C catalyst.

引文

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