典型文献
Design of experiments unravels insights into selective ethylene or methane production on evaporated Cu catalysts
文献摘要：
As a highly tempting technology to close the carbon cycle,electrochemical CO2 reduction calls for the development of highly efficient and durable electrocatalysts.In the current study,Design of Experiments utilizing the response surface method is exploited to predict the optimal process variables for preparing high-performance Cu catalysts,unraveling that the selectivity towards methane or ethylene can be simply modulated by varying the evaporation parameters,among which the Cu film thickness is the most pivotal factor to determine the product selectivity.The predicted optimal catalyst with a low Cu thickness affords a high methane Faradaic efficiency of 70.6％at the partial current density of 211.8 mA cm-2,whereas that of a high Cu thickness achieves a high ethylene selectivity of 66.8％at 267.2 mA cm-2 in the flow cell.Further structure-performance correlation and in-situ electro-spectroscopic measurements attribute the high methane selectivity to isolated Cu clusters with low pack-ing density and monotonous lattice structure,and the high ethylene efficiency to coalesced Cu nanopar-ticles with rich grain boundaries and lattice defects.The high Cu packing density and crystallographic diversity is of essence to promoting C-C coupling by stabilizing*CO and suppressing*H coverage on the catalyst surface.This work highlights the implementation of scientific and mathematic methods to uncover optimal catalysts and mechanistic understandings toward selective electrochemical CO2 reduction.
文献关键词：
中图分类号：
作者姓名：
Jian Cheng;Yuqing Bai;Zhihe Wei;Qiaoqiao Mu;Hao Sun;Ling Lin;Long Xiao;Xulan Xie;Zhao Deng;Yang Peng
作者机构：
Soochow Institute for Energy and Materials Innovations,College of Energy,Soochow University,Suzhou 215006,Jiangsu,China;Jiangsu Key Laboratory of Advanced Negative Carbon Technologies,Soochow University,Suzhou 215123,Jiangsu,China;Soochow Municipal Laboratory for Low Carbon Technologies and Industries,Suzhou 215006,Jiangsu,China;Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province,Suzhou 215006,Jiangsu,China
文献出处：
引用格式：
[1]Jian Cheng;Yuqing Bai;Zhihe Wei;Qiaoqiao Mu;Hao Sun;Ling Lin;Long Xiao;Xulan Xie;Zhao Deng;Yang Peng-.Design of experiments unravels insights into selective ethylene or methane production on evaporated Cu catalysts)[J].能源化学,2022(12):422-429
A类：
coalesced
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AB值：
0.562044
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