Re3P4/ReS2 Heterostructure With Bidirectional Electron Flow via Ohmic Contact for Enhanced pH‐Universal Hydrogen Evolution
Re3P4/ReS2ヘテロ構造：オーミックコンタクトによる双方向電子流でpHユニバーサル水素発生を向上 (AI 翻訳)
Dong Zhang, Hao Fu, Chengang Pei, Hyungu Han, Won Jun Kang, Hye Won Sung, Won Tae Hong, Jong Hun Kim, Xu Yu, Chan‐Hwa Chung, Ho Seok Park, Jung Kyu Kim
🤖 gxceed AI 要約
日本語
独自のRe3P4/ReS2オーミックコンタクトヘテロ構造を開発し、広いpH範囲で低過電圧と長期間安定性を達成。理論計算により界面電荷再分布が反応中間体の吸着エネルギーを最適化することを解明。AEMWEで工業電流密度下500時間の安定動作を実証。
English
A unique Re3P4/ReS2 Ohmic contact heterostructure achieved pH-universal HER with low overpotentials (40-94 mV) and stability for 90 h. DFT calculations show interfacial charge redistribution optimizes adsorption energies. An AEMWE with this catalyst maintained 2.01 V at 1 A/cm2 and stable operation for 500 h at 500 mA/cm2.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
グリーン水素製造の効率化とコスト低減に直結する成果であり、日本の水素基本戦略やGX分野における技術開発に重要な知見を提供する。
In the global GX context
This work advances efficient green hydrogen production, aligning with global decarbonization goals and initiatives like the Hydrogen Council and national hydrogen strategies.
👥 読者別の含意
🔬研究者:Key study for electrocatalyst design for pH-universal HER via Ohmic contact engineering.
🏢実務担当者:Insights for developing durable electrolyzer components with industrial current density stability.
📄 Abstract（原文）
The development of transition metal dichalcogenide‐based electrocatalysts with outstanding hydrogen evolution reaction (HER) performance and long‐term durability across the entire pH range is crucial for achieving energy‐ and cost‐efficient green hydrogen production via water electrolysis. Herein, we demonstrate a unique Re3P4/ReS2 Ohmic contact heterostructure fabricated via a facile hydrothermal process followed by phosphorization, which delivers remarkably efficient and durable HER performance, exhibiting pH‐universal activity with low overpotentials of 40 mV (0.5 m H2SO4), 66 mV (1.0 m KOH), and 94 mV (1.0 m phosphate buffer solution) at 10 mA cm−2, together with outstanding stability for 90 h under different current densities at 10, 50 and 100 mA cm−2. Experimental analysis and theoretical calculations indicate that the Ohmic contact interface can induce interfacial charge redistribution, which optimizes the adsorption energy of reaction intermediates in the HER process. Consequently, the anion exchange membrane water electrolyzer (AEMWE) assembled with Re3P4/ReS2 achieves a low cell voltage of 2.01 V at 1.0 A cm−2 and maintains stable operation for 500 h at an industrial current density of 500 mA cm−2. This work provides valuable insight into designing Ohmic contact heterostructures as pH‐universal electrocatalysts, advancing the development of efficient hydrogen production technologies under diverse electrolyte conditions.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/adfm.202530779first seen 2026-05-15 20:43:32
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