Platinum nanoparticle synthesis in engineered organic nanoscale reactors for efficient oxygen electro-reduction in alkaline conditions

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

MRS Communications Pub Date : 2024-03-28 DOI:10.1557/s43579-024-00547-2

Subhajit Bhunia, Suzatra Chatterjee, Carlos R. Cabrera

引用次数: 0

Abstract

We have designed a polymer, hc-TBtd-COP incorporating a Wurster-type redox-active building unit for the in situ reduction and nucleation of platinum nanoparticles which forms an organic polymer-wrapped metal nanoparticle composite. This composite exhibits exceptional mass activity (MA) (about 5 times larger than 20% Pt/C at 0.9 V vs. RHE) and specific activity (SA) (approximately 2 times larger than 20% Pt/C at 0.9 V vs. RHE) for the oxygen reduction reaction. The efficient electrocatalysis results from higher catalytic site dispersion and superior atom utilization efficiency. This research contributes to the advancement of composite materials for enhanced electrocatalytic performance.

Graphical abstract

Abstract Image

查看原文本刊更多论文

在工程有机纳米级反应器中合成铂纳米粒子，在碱性条件下实现高效氧气电还原

我们设计了一种聚合物 hc-TBtd-COP，其中包含一个 Wurster 型氧化还原活性构建单元，用于铂纳米粒子的原位还原和成核，从而形成一种有机聚合物包裹金属纳米粒子的复合材料。这种复合材料在氧还原反应中表现出优异的质量活性 (MA)（在 0.9 V 对 RHE 条件下约为 20% Pt/C 的 5 倍）和比活性 (SA)（在 0.9 V 对 RHE 条件下约为 20% Pt/C 的 2 倍）。高效的电催化源于更高的催化位点分散度和出色的原子利用效率。这项研究有助于提高复合材料的电催化性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

MRS Communications MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

2.60

自引率

10.50%

发文量

166

审稿时长

>12 weeks

期刊介绍： MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.