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Enhanced Hydrazine Electrooxidation Using Ni–Zr/Multiwalled Carbon Nanotube Nanocomposites as Low‐Cost Anode Catalysts

Ni-Zr/多層カーボンナノチューブ複合材料を用いた低コストアノード触媒によるヒドラジン電気酸化の強化 (AI 翻訳)

Bilwadal Dutta, Chandan Kumar Raul, Koushik Pakhira, S. Basu, Ajit Kumar Meikap

ChemNanoMat📚 査読済 / ジャーナル2026-06-01#水素
DOI: 10.1002/cnma.70304
原典: https://doi.org/10.1002/cnma.70304

🤖 gxceed AI 要約

日本語

本研究では、湿式化学法で合成したNi-Zr/MWCNTナノコンポジット触媒のヒドラジン電気酸化性能を評価。Ni50Zr50組成が最高活性を示し、電流密度96.35 mA/cm²、低活性化エネルギー（7.05 kJ/mol）を達成。合金化とMWCNT担体の相乗効果による反応速度向上を実証し、燃料電池向け低コスト触媒の可能性を示した。

English

This study synthesizes Ni-Zr/MWCNT nanocomposite catalysts via wet chemical method and evaluates their hydrazine electrooxidation performance. The Ni50Zr50 composition achieves the highest current density of 96.35 mA/cm² with low activation energy (7.05 kJ/mol). Synergistic alloying and conductive support enhance kinetics, offering a cost-effective anode catalyst for fuel cell applications.

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

日本は水素社会実現に向け燃料電池技術の開発を推進しており、本触媒研究は低コスト化に寄与する可能性がある。ただし実用化にはさらなる耐久性評価やシステム統合が必要。

In the global GX context

Globally, fuel cell technology is key for decarbonizing transport and stationary power. This work provides a promising low-cost catalyst for hydrazine electrooxidation, a potential hydrogen carrier, contributing to the broader energy transition.

👥 読者別の含意

🔬研究者:Materials scientists and electrochemists interested in non-precious metal catalysts for fuel cells may find the synergistic alloying approach and performance metrics useful for further optimization.

📄 Abstract（原文）

In this work, Ni–Zr nanoparticles supported on multiwalled carbon nanotubes (MWCNTs) were synthesized via a wet chemical method, and four different Ni–Zr/MWCNT compositions were systematically prepared to investigate composition‐dependent electrocatalytic behavior. Structural and morphological characterizations using X‐ray diffraction, field‐emission scanning electron microscopy, and energy‐dispersive spectroscopy confirmed the successful incorporation of Zr into the Ni/MWCNT framework and the uniform dispersion of nanoparticles. Electrochemical studies revealed that the Ni–Zr/MWCNT system demonstrated markedly superior electrocatalytic performance compared to monometallic Ni/MWCNT. In particular, the Ni 50 Zr 50 /MWCNT composition exhibited the highest activity, delivering a current density of 96.35 mA.cm −2 with a low apparent activation energy ( E a = 7.05 kJ.mol −1 ), a minimal charge transfer resistance ( R ct = 24.89 ohms), and stable chronoamperometric response. The results demonstrate that synergistic alloying and conductive MWCNT support effectively enhance reaction kinetics, providing a cost‐effective and durable anode catalyst for advanced hydrazine electrooxidation.

🔗 Provenance — このレコードを発見したソース

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