MXene‐Supported FeCo‐LDHs as Highly Efficient Catalysts for Enhanced Electrocatalytic Oxygen Evolution Reaction,ChemNanoMat

当前位置： X-MOL 学术 › ChemNanoMat › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

MXene‐Supported FeCo‐LDHs as Highly Efficient Catalysts for Enhanced Electrocatalytic Oxygen Evolution Reaction
ChemNanoMat ( IF 2.6 ) Pub Date : 2019-11-26 , DOI: 10.1002/cnma.201900613
Ming Tian ₁ , Yi Jiang ₁ , Haili Tong ₁ , Yingming Xu ₁ , Lixin Xia ₁

Affiliation

Water oxidation is the rate‐determining step for water splitting. The layered double hydroxides (LDHs) play an important role in the oxygen evolution reaction (OER). Combining with some two‐dimensional (2D) materials with high surface area and electrical conductivity can greatly improve the performance of water oxidation. Herein, we report a composite material that FeCo layered double hydroxides (FeCo‐LDHs) were combined with single layer MXene (Ti₃C₂T_x). The single‐layer MXene takes full advantage of the more active sites, reflecting higher electrochemical activity than other forms of MXene (nanofiber and multilayer). The resulting FeCo‐LDH/MXene hybrid provides high electron transfer ability and electrochemically active surface area, leading to an enhancement of catalytic activity and durability for OER. An extremely low overpotential of 268 mV at a current density of 10 mA cm⁻² was achieved, which was lower than Graphene or MWCNT combined with FeCo‐LDH.

中文翻译：

MXene负载的FeCo-LDHs是用于增强电催化氧分解反应的高效催化剂

水氧化是水分解的决定速率的步骤。层状双氢氧化物（LDHs）在析氧反应（OER）中起重要作用。结合使用具有高表面积和高电导率的某些二维（2D）材料，可以大大提高水氧化性能。本文中，我们报告了一种复合材料，其中FeCo层状双氢氧化物（FeCo-LDHs）与单层MXene（Ti ₃ C ₂ T _x）。单层MXene充分利用了更多的活性位，比其他形式的MXene（纳米纤维和多层）表现出更高的电化学活性。生成的FeCo-LDH / MXene杂化物具有很高的电子转移能力和电化学活性表面积，从而提高了OER的催化活性和耐久性。在10 mA cm ^-2的电流密度下，实现了268 mV的极低过电势，低于石墨烯或MWCNT与FeCo-LDH的组合。

更新日期：2019-11-26

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11