In doped NiCo-LDH as bifunctional electrocatalysts for overall water splitting
ドープ型NiCo-LDH二機能電極触媒による水の全分解 (AI 翻訳)
Huang Z, Yu M, Xie Y, Guo Y
🤖 gxceed AI 要約
日本語
本論文は、インジウムドープNiCo層状複水酸化物（In-NiCo LDH）を電着法で合成し、水電解による水素製造における高い二機能触媒活性を示した。最適組成In1.0-NiCo LDHは、OERで215 mV、HERで180 mVの低過電圧（100 mA cm⁻²）を達成し、100時間の長期安定性を実証した。構造解析によりIn³⁺の格子間ドーピングが活性サイトを創出する機構を解明した。
English
This paper reports indium-doped NiCo layered double hydroxide (In-NiCo LDH) synthesized via electrodeposition for overall water splitting. The optimized catalyst shows low overpotentials (215 mV for OER, 180 mV for HER at 100 mA cm⁻²) and excellent stability for 100 hours. Interstitial In³⁺ doping creates new active sites, enhancing bifunctional activity. A two-electrode electrolyzer requires only 1.73 V to reach 100 mA cm⁻².
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
日本は水素基本戦略でグリーン水素製造技術の開発を推進しており、本研究成果は高効率電極触媒の設計指針として重要である。SSBJやTCFD開示においても水素関連技術の進展は脱炭素への寄与として評価される可能性がある。
In the global GX context
Globally, green hydrogen is a key pillar of decarbonization, and this work provides a promising catalyst design for efficient water electrolysis. The findings could help reduce the cost of green hydrogen production, aligning with ISSB and TCFD frameworks that encourage investment in clean hydrogen technologies.
👥 読者別の含意
🔬研究者:This paper offers insight into atomic doping engineering for bifunctional catalysts, particularly the role of interstitial defects in enhancing OER and HER activity.
🏢実務担当者:The electrodeposition method is scalable and could be relevant for industrial electrolyzer manufacturing, potentially lowering production costs.
🏛政策担当者:This work supports the technical feasibility of low-cost green hydrogen, which is critical for national hydrogen strategies and international decarbonization targets.
📄 Abstract（原文）
<title>Abstract</title> <p> The development of efficient, stable, and cost-effective bifunctional electrocatalysts for overall water splitting is crucial for green hydrogen production. Herein, we report a series of indium-doped nickel-cobalt layered double hydroxide (In-NiCo LDH) catalysts synthesized directly on nickel foam via a one-step electrodeposition method. By varying the In doping concentration, we identified the optimal In/(Ni + Co) molar ratio of 1.0% that delivers exceptional bifunctional activity. The optimized In <sub>1.0</sub> -NiCo LDH electrode exhibits low overpotentials of 215 mV for the oxygen evolution reaction (OER) and 180 mV for the hydrogen evolution reaction (HER) at 100 mA cm <sup>− 2</sup> , with small Tafel slopes of 71.53 mV dec <sup>− 1</sup> (OER) and 47.69 mV dec <sup>− 1</sup> (HER). Structural characterization reveals that In <sup>3+</sup> ions are incorporated as interstitial defects into the LDH lattice, causing lattice expansion and distorted electronic structure. This unique doping mode creates new active sites that serve as electron-donating sites for HER and electron-withdrawing sites for OER. Furthermore, the In <sub>1.0</sub> -NiCo LDH demonstrates remarkable long-term stability, maintaining stable operation for 100 hours in both OER and HER tests. When assembled as a two-electrode electrolyzer, it requires only 1.73 V to achieve 100 mA cm <sup>− 2</sup> for overall water splitting. This work presents a facile electrodeposition strategy for fabricating high-performance In-doped NiCo-LDH bifunctional catalysts and elucidates the structure-activity relationship governed by atomic doping engineering. </p>
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.21203/rs.3.rs-10074708/v1first seen 2026-06-25 04:24:00
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。