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IMAGE: Schematic diagram of the process of material phase transition, ex-solution particle formation, and the change in catalytic activity depending on the reduction environment. view more
Credit: POSTECH
Fuel cells, which are attracting attention as an eco-friendly energy source, obtain electricity and heat simultaneously through the reverse reaction of water electrolysis. Therefore, the catalyst that enhances the reaction efficiency is directly connected to the performance of the fuel cell. To this, a POSTECH-UNIST joint research team has taken a step closer to developing high-performance catalysts by uncovering the ex-solution and phase transition phenomena at the atomic level for the first time.
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by Blair Fix
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Summary
Humanity s most pressing need is to learn how to live within our planet s boundaries - something that likely means doing without economic growth. How, then, can we create a non-growth society that is both just and equitable? I attempt to address this question by looking at an aspect of sustainability (and equity) that is not often discussed: the growth of
hierarchy. As societies consume more energy, they tend to become more hierarchical. At the same time, the growth of hierarchy also seems to be a key driver of income/resource inequality. In this essay, I review the evidence for the joint relation between energy, hierarchy and inequality. I then speculate about what it implies for achieving a sustainable and equitable future.
2 emissions. Since CO
2 is thermodynamically stable, efficient catalysts are needed to reduce the energy consumption in the process.
The single-atom catalysts immobilized on nitrogen-doped carbon supports (M-N/C) have been widely used for CO
2 electrocatalytic reduction reaction due to their high atom utilization efficiency.
Recently, a research team led by Prof. LIU Licheng from the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences (CAS) proposed a two-step amination strategy to regulate the electronic structure of M-N/C catalysts (M=Ni, Fe, Zn) and enhance the intrinsic activity of CO
2 electrocatalytic reduction.
4/C was aminated by annealing with carbamide in NH