【学术视频】慕尼黑工业大学Roland A. Fischer教授：Integration of Metal-Organic...

原创 KouShare 蔻享学术

更多精彩视频登陆网站

www.koushare.com

图 | Roland A. Fischer

题目：Integration of Metal-Organic Frameworks to Devices: SURMOF-Derived Electrocatalysts for Water-Splitting and Fuel Cell Applications

报告人：Roland A. Fischer

单位：Technical University of Munich (TUM)

时间：2019-11-22

地点：中国科学技术大学

扫码观看精彩报告视频

报告摘要

Metal-Organic Frameworks (MOFs) are crytalline and porous coordination network materials which are composed of metal ion building units connected by organic linkers via coordination bonds. MOFs feature a wide range of fascinating structures, and offer unique opportunities of molecular materials design and a huge paremeter space of fine tuning of chemical and physical properties. Applications of MOF inculde energy, environment, health and information technologies. MOF crystallite and thin film deposition and selective positioning to substrate surfaces. Within the past decade, surface anchored MOF (SURMOF) research has seen a tremendous evolution. The lecture summarizes this development, highlighting vapor-phase assisted growth being compatible with Chemical Vapor Deposition (CVD) and Atomic Layer Deposition (ALD) techniques and the coordination modulated quasi-epitaxial stepwise layer-by-layer growth in the liquid phase (CM-LPE) of SURMOFs.

A novel application of SURMOF-derived materials is presented. For example, unprecedented OER catalyst mass specific activity and stability in alkaline solution were discovered for mixed NiCo hydroxide electrocatalysts, which were derived from NiCo-BDC SURMOFs on macro-and microelectrode substrates. The activity of ~2.5 mA·μg^-1 at the overpotential of 300 mV is superior to benchmarked electrocatalysts. The excellent morphology of the SURMOF-derived ultrathin electrocatalyst coating led to a high exposure of the most active Ni and Co sites.

The performance can be further improved by a lattice strain modulation approach. NiFe-BDC SURMOF derivatives were obtained reaching a current density of 200 mA·cm^-2 at a small overpotential of 210 mV, and long-term stability of over 120 h at a current density of 500 mA cm^-2. This bi-functional catalyst for OER and ORR features a very narrow overpotential window of 0.68 V in 0.1 M KOH, in which the mass loading was two orders of magnitude lower than bench mark electrocatalysts.

个人简介

Roland A. Fischer教授，德国慕尼黑工业大学催化硏究中心主仼、欧洲科学院院士和徳国DFG分管亚洲事务的副主席。Fischer教授曾担任多个高质量杂志编委，包括Angewandte Chemie, Chem. Vap. Depos. Dalton Transactions, J. Organomet. Chem. Fischer教授已经发表了500多篇研究论文（非自引数>17500次），入选2018年度高被引科学家 ( Web of science)。

—— ——往期精彩回顾—— ——

●【学术视频】厦门大学朱军教授：芳香性的前世今生

●【学术视频】北大吴飙教授亲述量子课程之二：量子测量

●【学术视频】北大吴飙教授亲述量子课程之一：量子纠缠

●【学术视频】美国犹他州立大学刘天骠教授：Developing New Battery Chemistries for Energy Storage

●【学术视频】印第安纳大学Steven L. Tait教授：Single-site Catalysts by Metal-ligand Complexation at Surfaces: From Model Systems in Vacuum to High-pressure Catalysis on Oxide Supports

●【学术视频】美国伦斯勒理工学院张绳百教授：Vacuum level in an infinite solid as a unified scheme for intrinsic band alignment

●【学术视频】上海交通大学贾金锋教授：Topological superconductor and Majorana zero mode in the vortex

●【学术视频】美国堪萨斯大学赵辉教授：二维材料的超快激光光谱学研究

●【学术视频】德国科学院院士Hans-Joachim Freund教授：Model Systems in Heterogeneous Catalysis: Surface Chemistry of Complex Systems at the Atomic Level

●【学术视频】加拿大卡尔加里大学David Knudsen教授：The Mystery of the Auroral Generator

END

扫描二维码，关注微信公众号

戳这里，观看精彩视频哟！