Polyelectrolyte Functionalized Carbon Nanotubes as Efficient Metal-free Electrocatalysts for Oxygen Reduction
Polyelectrolyte Functionalized Carbon Nanotubes as Efficient Metal-free Electrocatalysts for Oxygen Reduction
复制标题
DOI：
10.1021/ja1112904
复制
发表时间：
2011-04-13
影响因子：
15
通讯作者：
Dai, Liming
中科院分区：
文献类型：
--
作者：
Wang, Shuangyin;Yu, Dingshan;Dai, Liming
聚二烯丙基二甲基氯化铵（PDDA）具有很强的吸电子能力，可以通过分子间电荷转移在纳米管碳平面上产生净正电荷。所得到的PDDA功能化/吸附的碳纳米管（CNT），无论是在对齐或非对齐的形式，被证明作为无金属催化剂的氧还原反应（ORR）在燃料电池中具有类似的性能作为Pt催化剂。吸附诱导的分子间电荷转移应该为燃料电池中用于氧还原的各种碳基高效无金属ORR催化剂提供通用方法，甚至为燃料电池以外的应用提供新的催化材料。
Having a strong electron-withdrawing ability, poly(diallyldimethylammonium chloride) (PDDA) was used to create net positive charge for carbon atoms in the nanotube carbon plane via intermolecular charge transfer. The resultant PDDA functionalized/adsorbed carbon nanotubes (CNTs), either in an aligned or nonaligned form, were demonstrated to act as metal-free catalysts for oxygen reduction reaction (ORR) in fuel cells with similar performance as Pt catalysts. The adsorption-induced intermolecular charge-transfer should provide a general approach to various carbon-based efficient metal-free ORR catalysts for oxygen reduction in fuel cells, and even new catalytic materials for applications beyond fuel cells.