Copper-on-nitride enhances the stable electrosynthesis of multi-carbon products from CO2

Nature Communications
Zhiqin LiangThomas Burdyny

Abstract

Copper-based materials are promising electrocatalysts for CO2 reduction. Prior studies show that the mixture of copper (I) and copper (0) at the catalyst surface enhances multi-carbon products from CO2 reduction; however, the stable presence of copper (I) remains the subject of debate. Here we report a copper on copper (I) composite that stabilizes copper (I) during CO2 reduction through the use of copper nitride as an underlying copper (I) species. We synthesize a copper-on-nitride catalyst that exhibits a Faradaic efficiency of 64 ± 2% for C2+ products. We achieve a 40-fold enhancement in the ratio of C2+ to the competing CH4 compared to the case of pure copper. We further show that the copper-on-nitride catalyst performs stable CO2 reduction over 30 h. Mechanistic studies suggest that the use of copper nitride contributes to reducing the CO dimerization energy barrier-a rate-limiting step in CO2 reduction to multi-carbon products.

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Citations

Mar 29, 2019·Advanced Materials·Wei WangTierui Zhang
Aug 12, 2020·Chemical Society Reviews·Young Jin SaYun Jeong Hwang
Oct 24, 2019·Nature Communications·Tao-Tao ZhuangEdward H Sargent
Dec 10, 2020·Chemical Society Reviews·Hao WangJong-Min Lee
Feb 3, 2021·Chemical Communications : Chem Comm·Linfeng XieQing Li
Feb 3, 2021·Materials·Aleksandra ScigalaRobert Szczesny
Feb 23, 2021·Journal of the American Chemical Society·Xiao ZhangHongjie Dai
Feb 25, 2021·Chemical Society Reviews·Genxiang WangLiming Dai
Mar 13, 2021·Nature Communications·Chen PengGengfeng Zheng
May 29, 2021·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Shiyan WangJinlan Wang
May 18, 2021·Chemical Science·Menglei YuanGuangjin Zhang
May 28, 2021·Chemical Science·Xupeng YanBuxing Han
Mar 17, 2020·Journal of the American Chemical Society·Peng-Peng YangShu-Hong Yu
Oct 4, 2019·Chemical Reviews·Chenlu XiePeidong Yang
Nov 26, 2020·Accounts of Chemical Research·Xiaodong LiYi Xie
Aug 28, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Robert SzczęsnyDuncan H Gregory
Nov 5, 2019·Nano Letters·Zhouyang YinShouheng Sun

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Methods Mentioned

BETA
X-ray
transmission electron microscopy
nuclear magnetic resonance
NMR

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