Hydrogenation catalysts frequently impose a compromise between activity and selectivity,where maximizing one property inevitably diminishes the other.Researchers from the Dalian Institute of Chemical Physics(DICP)of t...Hydrogenation catalysts frequently impose a compromise between activity and selectivity,where maximizing one property inevitably diminishes the other.Researchers from the Dalian Institute of Chemical Physics(DICP)of the Chinese Academy of Sciences,in collaboration with scholars from University of Science and Technology of China and the Karlsruhe Institute of Technology in Germany,cracked this dilemma by engineering bimetallic catalysts with atomic precision-a breakthrough that boosts hydrogenation efficiency by 35-fold while maintaining pinpoint accuracy,resolving the stubborn activity-selectivity paradox.展开更多
The electrocatalytic water-splitting process is widely acknowledged as the most sustainable and environmentally friendly technology for hydrogen(H2)production.However,its energy efficiency is significantly constrained...The electrocatalytic water-splitting process is widely acknowledged as the most sustainable and environmentally friendly technology for hydrogen(H2)production.However,its energy efficiency is significantly constrained by the kinetically slow oxygen evolution reaction(OER)at the anode,which accounts for about 90%of the electrical energy consumption in the water-splitting process.A new strategy is urgently needed to reduce its energy consumption.In recent years,electrochemical oxidation of small molecules has been considered for replacement of OER for efficient H2 production,due to its benign operational conditions,low theoretical thermodynamic potential,high conversion efficiency and selectivity,and environmental sustainability.Hybrid electrolysis systems,by integrating cathodic hydrogen evolution reaction with anodic oxidation of small molecules,have been introduced,which can generate high-purity H2 and produce value-added products or pollutant degradation.In this review,we highlight the recent advancements and significant milestones achieved in hybrid water electrolysis systems.The focus is on non-noble metal electrocatalysts,reaction mechanisms,and the construction of electrolyzers.Additionally,we present the prevailing challenges and future perspectives pertinent to the evolution of this burgeoning technology.展开更多
文摘Hydrogenation catalysts frequently impose a compromise between activity and selectivity,where maximizing one property inevitably diminishes the other.Researchers from the Dalian Institute of Chemical Physics(DICP)of the Chinese Academy of Sciences,in collaboration with scholars from University of Science and Technology of China and the Karlsruhe Institute of Technology in Germany,cracked this dilemma by engineering bimetallic catalysts with atomic precision-a breakthrough that boosts hydrogenation efficiency by 35-fold while maintaining pinpoint accuracy,resolving the stubborn activity-selectivity paradox.
基金Entrepreneurial and innovative team project of Ningbo Yinzhou District,Grant/Award Number:X.W.National Natural Science Foundation of China,Grant/Award Number:22379047Talent research start-up project of Zhejiang Wanli University,Grant/Award Number:SC1032345280480。
文摘The electrocatalytic water-splitting process is widely acknowledged as the most sustainable and environmentally friendly technology for hydrogen(H2)production.However,its energy efficiency is significantly constrained by the kinetically slow oxygen evolution reaction(OER)at the anode,which accounts for about 90%of the electrical energy consumption in the water-splitting process.A new strategy is urgently needed to reduce its energy consumption.In recent years,electrochemical oxidation of small molecules has been considered for replacement of OER for efficient H2 production,due to its benign operational conditions,low theoretical thermodynamic potential,high conversion efficiency and selectivity,and environmental sustainability.Hybrid electrolysis systems,by integrating cathodic hydrogen evolution reaction with anodic oxidation of small molecules,have been introduced,which can generate high-purity H2 and produce value-added products or pollutant degradation.In this review,we highlight the recent advancements and significant milestones achieved in hybrid water electrolysis systems.The focus is on non-noble metal electrocatalysts,reaction mechanisms,and the construction of electrolyzers.Additionally,we present the prevailing challenges and future perspectives pertinent to the evolution of this burgeoning technology.
