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题名: Highly effective IrxSn1-xO2 electrocatalysts for oxygen evolution reaction in the solid polymer electrolyte water electrolyser
作者: Li, Guangfu1, 2;  Yu, Hongmei1;  Wang, Xunying1, 2;  Sun, Shucheng1, 2;  Li, Yongkun1, 2;  Shao, Zhigang1;  Yi, Baolian1
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2013
DOI: 10.1039/c2cp44496h
卷: 15, 期:8, 页:2858-2866
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: We developed an advanced surfactant-assistant method for the IrxSn1-xO2 (0 < x <= 1) nanoparticle (NP) preparation, and examined the OER performances by a series of half-cell and full-cell tests. In contrast to the commercial Ir black, the collective data confirmed the outstanding activity and stability of the fabricated IrxSn1-xO2 (x = 1, 0.67 and 0.52) NPs, which could be ascribed to the amorphous structure, good dispersion, high pore volume, solid-solution state and Ir-rich surface for bi-metal oxides, and relatively large size (10-11 nm), while Ir0.31Sn0.69 exhibited poor electro-catalytic activity because of the separated two phases, a SnO2-rich phase and an IrO2-rich phase. Furthermore, compared with highly active IrO2, the improved durability, precious-metal Ir utilization efficiency and correspondingly reduced Ir loading were realized by the addition of Sn component. When the Ir0.52Sn0.48O2 cell operated at 80 degrees C using Nafions (R) 115 membrane and less than 0.8 mg cm(-2) of the noble-metal Ir loading, the cell voltages we achieved were 1.631 V at 1000 mA cm(-2), and 1.821 V at 2000 mA cm(-2). The IR-free voltage at the studied current density was very close to the onset voltage of oxygen evolution. The only 50 mu V h(-1) of voltage increased for the 500 h durability test at 500 mA cm(-2). In fact, these results are exceptional compared to the performances for OER in SPEWE cells known so far. This work highlights the potential of using highly active and stable IrO2-SnO2 amorphous NPs to enhance the electrolysis efficiency, reduce the noble-metal Ir loading and thus the cost of hydrogen production from the solid polymer electrolyte water electrolysis.
关键词[WOS]: HYDROGEN-PRODUCTION ;  ELECTROCHEMICAL CHARACTERIZATION ;  PEM ELECTROLYSIS ;  BLOCK-COPOLYMERS ;  SPE ELECTROLYZER ;  PERFORMANCE ;  CATALYSTS ;  IRO2 ;  ENERGY ;  ANODE
语种: 英语
WOS记录号: WOS:000314365800028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137878
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Fuel Cells, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Li, Guangfu,Yu, Hongmei,Wang, Xunying,et al. Highly effective IrxSn1-xO2 electrocatalysts for oxygen evolution reaction in the solid polymer electrolyte water electrolyser[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2013,15(8):2858-2866.
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