| 查看: 272 | 回复: 1 | |||
| 当前主题已经存档。 | |||
[交流]
【资源】聚合物提高Pt的稳定性
|
|||
|
Group里刚刚接受的文章：聚电解质PDDA提高Pt的稳定性。 [RSC]Journal of materials chemistry: Stabilization of platinum nanoparticle electrocatalysts for oxygen reduction using polyelectrolyte 文章链接 http://www.rsc.org/Publishing/Jo ... le.asp?doi=b912104h Abstract A long-chain polyelectrolyte, poly(diallyldimethylammonium chloride) (PDDA), has been employed to stabilize platinum nanoparticles for oxygen reduction in polymer electrolyte membrane (PEM) fuel cells. Pt nanoparticles were synthesized by reducing H2PtCl6 with NaBH4 in the presence of PDDA and then deposited on carbon support (PDDA-Pt/C). Transmission electron microscope images showed that Pt nanoparticles of PDDA-Pt/C are uniformly dispersed on carbon support with a mean size of about 2.2 nm (2.1 nm for commercial Etek-Pt/C). PDDA-Pt/C exhibited a higher activity towards oxygen reduction reaction (ORR) than Etek-Pt/C. The durability of PDDA-Pt/C was improved by a factor of 2 as compared with Etek-Pt/C. X-ray photoelectron spectroscopy characterization of PDDA-Pt/C revealed the interaction between Pt nanoparticles and PDDA, which increased Pt oxidation potential and prevented Pt nanoparticles from migrating/agglomerating on or detaching from carbon support. This provides a promising strategy to improve both the durability and activity of electrocatalysts for fuel cells. 希望对大家有所帮助！ |
回复此楼» 猜你喜欢
青岛大学固态电池研究团队招收材料、化学、物理等方向博士研究生
已经有33人回复
-
化学工程085602 305分求调剂
已经有22人回复
-
物理化学论文润色/翻译怎么收费?
已经有193人回复
-
龋病与牙周病的表述
已经有1人回复
-
070300化学求调剂
已经有12人回复
-
武汉纺织大学全国重点实验室杨应奎教授团队拟招17-19位硕博生！
已经有0人回复
-
材料与化工专硕接受跨专业调剂（重庆市属高校）
已经有0人回复
-
武汉纺织大学全国重点实验室杨应奎教授团队拟招17-19位硕博生！
已经有0人回复
-
070300 化学学硕 初试357分 b区求调剂
已经有1人回复
-
上海工程技术大学生态与功能纺织品开发研究团队招收学硕专硕研究生
已经有0人回复
-
华南理工0703求调剂，总分336四六级已过
已经有0人回复
happyboy2008
至尊木虫 (知名作家)
- 应助: 0 (幼儿园)
- 金币: 10749.2
- 散金: 142
- 红花: 6
- 帖子: 5286
- 在线: 968.7小时
- 虫号: 290510
- 注册: 2006-10-28
- 专业: 能源化工
2楼2009-09-23 15:00:22
