A solvent evaporation plus hydrogen reduction method to synthesize IrNi/C catalysts for hydrogen oxidation
A solvent evaporation plus hydrogen reduction method to synthesize IrNi/C catalysts for hydrogen oxidation
复制标题
溶剂蒸发加氢还原法合成IrNi/C氢氧化催化剂
DOI：
10.1039/c4ta00909f
复制
发表时间：
2014-06
影响因子：
11.9
通讯作者：
Wei Zidong
中科院分区：
文献类型：
--
作者：
Ding Wei;Chen Siguo;Wang Hongmin;Wei Zidong
以氨为络合剂，采用溶剂蒸发加氢还原（SE-HR）法制备了碳负载IrNi纳米颗粒（IrNi/C）。在该方法中，Ni(NH3)nIrCl6配合物被均匀地吸附在碳载体上；热退火后，通过原位还原相应的配合物得到高度分散的IrNi纳米颗粒。通过改变制备条件，制备出了晶格参数Ir控制在3.8416 ~ 3.6649 A范围内的IrNi/C样品。IrNi/C的氢氧化反应（HOR）与Ir晶格参数呈火山状关系，最大活度为3.7325 a。在三电极测试和单电池测试中，合成的催化剂的质量活性高于或与市售Pt/C催化剂相当。高活性归功于催化剂表面与氢中间体之间的最佳相互作用，以及新型SE-HR方法产生的高比电化学活性表面积。
A solvent evaporation plus hydrogen reduction (SE-HR) method is developed for the synthesis of carbon supported IrNi nanoparticles (IrNi/C) by using ammonia as a complexing agent. In this method, well distributed Ni(NH3)nIrCl6 complexes are formed and adsorbed on the carbon support; after thermal annealing, highly dispersed IrNi nanoparticles are obtained by in situ reduction of the corresponding complexes. By varying the preparation conditions, IrNi/C samples with the lattice parameter of Ir controlled in the range from 3.8416 A to 3.6649 A are prepared. The hydrogen oxidation reaction (HOR) of the IrNi/C exhibits volcano-shaped dependence on the lattice parameter of Ir with a maximum activity at 3.7325 A. The mass activity of the as-synthesized catalysts is higher than or comparable to that of commercial Pt/C catalysts in the three-electrode test and single cell test. The high activity is ascribed to the optimal interaction between the catalyst surface and the hydrogen intermediates, and to the high specific electrochemical activity surface area resulting from the novel SE-HR method.
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影响因子：
6.6
作者：
Yu-Ching Weng;Cheng-Tse Hsieh
通讯作者：
Yu-Ching Weng;Cheng-Tse Hsieh
影响因子：
3.7
作者：
K. Sasaki;Kurian A. Kuttiyiel;L. Barrio;D. Su;A. Frenkel;N. Marinkovic;D. Mahajan;R. Adzic
通讯作者：
K. Sasaki;Kurian A. Kuttiyiel;L. Barrio;D. Su;A. Frenkel;N. Marinkovic;D. Mahajan;R. Adzic
影响因子：
41.2
作者：
Greeley, J;Mavrikakis, M
通讯作者：
Mavrikakis, M
影响因子：
64.8
作者：
Steele, BCH;Heinzel, A
通讯作者：
Heinzel, A
影响因子：
7.2
作者：
Bing Li;Jinli Qiao;Daijun Yang;R. Lin;H. Lv;Haijiang Wang;J. Ma
通讯作者：
Bing Li;Jinli Qiao;Daijun Yang;R. Lin;H. Lv;Haijiang Wang;J. Ma