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<p>The development of acid-stable water oxidation electrocatalysts is crucial for high-performance energy conversion devices. Different from traditional nanostructuring, here we employ an innovative microwave-mediated electron–phonon coupling technique to assemble specific Ru atomic patterns (instead of random Ru-particle depositions) on Mn<sub>0.99</sub>Cr<sub>0.01</sub>O<sub>2</sub> surfaces (Ru<sub>MW</sub>-Mn<sub>1-x</sub>Cr<sub>x</sub>O<sub>2</sub>) in RuCl<sub>3</sub> solution because hydrated Ru-ion complexes can be uniformly activated to replace some Mn sites at nearby Cr-dopants through microwave-triggered energy coherent superposition with molecular rotations and collisions. This selective rearrangement in Ru<sub>MW</sub>-Mn<sub>1-x</sub>Cr<sub>x</sub>O<sub>2</sub> with particular spin-differentiated polarizations can induce localized spin domain inversion from reversed to parallel direction, which makes Ru<sub>MW</sub>-Mn<sub>1-x</sub>Cr<sub>x</sub>O<sub>2</sub> demonstrate a high current density of 1.0 A cm<sup>−2</sup> at 1.88 V and over 300 h of stability in a proton exchange membrane water electrolyzer. The cost per gallon of gasoline equivalent of the hydrogen produced is only 43% of the 2026 target set by the U.S. Department of Energy, underscoring the economic significance of this nanotechnology.</p>

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Electron–phonon coupling and coherent energy superposition induce spin-sensitive orbital degeneracy for enhanced acidic water oxidation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月21日

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  • Yanfeng Shi,
  • Lupeng Wang,
  • Miao Liu,
  • Zuozheng Xu,
  • Peilin Huang,
  • Lizhe Liu,
  • Yuanhong Xu

摘要

The development of acid-stable water oxidation electrocatalysts is crucial for high-performance energy conversion devices. Different from traditional nanostructuring, here we employ an innovative microwave-mediated electron–phonon coupling technique to assemble specific Ru atomic patterns (instead of random Ru-particle depositions) on Mn0.99Cr0.01O2 surfaces (RuMW-Mn1-xCrxO2) in RuCl3 solution because hydrated Ru-ion complexes can be uniformly activated to replace some Mn sites at nearby Cr-dopants through microwave-triggered energy coherent superposition with molecular rotations and collisions. This selective rearrangement in RuMW-Mn1-xCrxO2 with particular spin-differentiated polarizations can induce localized spin domain inversion from reversed to parallel direction, which makes RuMW-Mn1-xCrxO2 demonstrate a high current density of 1.0 A cm−2 at 1.88 V and over 300 h of stability in a proton exchange membrane water electrolyzer. The cost per gallon of gasoline equivalent of the hydrogen produced is only 43% of the 2026 target set by the U.S. Department of Energy, underscoring the economic significance of this nanotechnology.