公开(公告)号：US20090075142A1

公开(公告)日：2009-03-19

申请号：US12210481

申请日：2008-09-15

Applicant: Andre D. Taylor ,  Brandon D. Lucas

Inventor： Andre D. Taylor ,  Brandon D. Lucas

IPC: H01M8/10 ,  B05D5/12

CPC classification number: H01M8/1004 ,  H01M4/8605 ,  H01M4/8817 ,  H01M4/92 ,  H01M8/1097

Abstract: Nanoimprint lithography (NIL) method to fabricate electrodes with high specific Pt surface areas that can be used in fuel cell devices. The Pt catalyst structures were found to have electrochemical active surface areas (EAS) ranging from 0.8 to 1.5 m2g−1 Pt. These NIL catalyst structures include fuel cell membrane electrode assemblies (MEA) that are prepared by directly embossing a Nafion membrane. The features of the mold were transferred to the Nafion® and a thin film of Pt was deposited at a wide angle to form the anode catalyst layer. The resulting MEA yielded a Pt utilization of 15,375 mW mg−1 Pt compared to conventionally prepared MEAs (820 mW mg−1 Pt).

Abstract translation: 纳米压印光刻（NIL）方法来制造可用于燃料电池装置的具有高特异性Pt表面积的电极。 发现Pt催化剂结构的电化学活性表面积（EAS）为0.8〜1.5 m2g-1 Pt。 这些NIL催化剂结构包括通过直接压花Nafion膜制备的燃料电池膜电极组件（MEA）。 将模具的特征转移到Nafion上，并以广角沉积Pt薄膜以形成阳极催化剂层。 与常规制备的MEA（820mW mg-1 Pt）相比，所得MEA产生15,375mW mg-1 Pt的Pt利用率。