Identification of the active triple-phase boundary of a non-Pt catalyst layer in fuel cells
文献类型：期刊论文
| 作者 | Wang, Yu-Cheng,; Huang, Wen; Wan, Li-Yang; Yang, Jian; Xie, Rong-Jie; Zheng, Yan-Ping; Tan, Yuan-Zhi; Wang, Yue-Sheng; Zaghib, Karim; Zheng, Li-Rong
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| 刊名 | Science Advances
 |
| 出版日期 | 2022 |
| 卷号 | 8期号:44页码:8873 |
| DOI | 10.1126/sciadv.add8873 |
| 文献子类 | Article |
| 英文摘要 | The rational design of non-Pt oxygen reduction reaction (ORR) catalysts and catalyst layers in fuel cells is largely impeded by insufficient knowledge of triple-phase boundaries (TPBs) in the micropore and mesopore ranges. Here, we developed a size-sensitive molecular probe method to resolve the TPB of Fe/N/C catalyst layers in these size ranges. More than 70% of the ORR activity was found to be contributed by the 0.8- to 2.0-nanometer micropores of Fe/N/C catalysts, even at a low micropore area fraction of 29%. Acid-alkaline interactions at the catalyst-polyelectrolyte interface deactivate the active sites in mesopores and macropores, resulting in inactive TPBs, leaving micropores without the interaction as the active TPBs. The concept of active and inactive TPBs provides a previously unidentified design principle for non-Pt catalyst and catalyst layers in fuel cells. © 2022 The Authors. |
| 电子版国际标准刊号 | 23752548 |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/300330]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Yu-Cheng,,Huang, Wen,Wan, Li-Yang,et al. Identification of the active triple-phase boundary of a non-Pt catalyst layer in fuel cells[J]. Science Advances,2022,8(44):8873. |
| APA | Wang, Yu-Cheng,.,Huang, Wen.,Wan, Li-Yang.,Yang, Jian.,Xie, Rong-Jie.,...&Sun, Shi-Gang.(2022).Identification of the active triple-phase boundary of a non-Pt catalyst layer in fuel cells.Science Advances,8(44),8873. |
| MLA | Wang, Yu-Cheng,,et al."Identification of the active triple-phase boundary of a non-Pt catalyst layer in fuel cells".Science Advances 8.44(2022):8873. |
入库方式： OAI收割
来源：高能物理研究所
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