面向高性能电催化制氢的三元金属磷化物的耦合非晶化及组成优化

IF 15.6 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Bing Deng*, Zhen-Yu Wu, Erkang Feng, Lu Ma, Zhe Wang, Jinhang Chen, Lucas Eddy, Alexander Lathem, Teng Wang, Weiyin Chen, Yi Cheng, Shichen Xu, Qiming Liu, Boris I. Yakobson, Haotian Wang*, Yufeng Zhao* and James M. Tour*, 
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引用次数: 0

摘要

非晶材料具有丰富的活性位点和独特的电子构型,在清洁能源的高性能催化方面具有超越晶体材料的潜力。然而,由于其形成条件严格,它们的合成和成分优化仍未得到充分探索。在这里,我们报告了通过闪焦耳加热在几毫秒内合成三元铂-镍-磷(PtNiP)非晶纳米颗粒(ANPs),其特点是超快冷却,使金属前体能够玻璃化。通过成分优化,Pt4Ni4P1 ANPs的氢吸附吉布斯自由能优化为0.02 eV,接近理想值,甚至超过了基准金属铂催化剂。结果,PtNiP ANPs在酸性电解质中表现出优异的电催化析氢活性(η η10 ~ 14 mV, Tafel斜率~ 18 mV dec1,质量活性比最新的Pt/C高5倍)。生命周期评估和技术经济分析表明,与现有工艺相比,我们的方法可以显著减少温室气体排放、能源消耗和实际电解槽催化剂制造的生产成本。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Coupling Amorphization and Compositional Optimization of Ternary Metal Phosphides toward High-Performance Electrocatalytic Hydrogen Production

Coupling Amorphization and Compositional Optimization of Ternary Metal Phosphides toward High-Performance Electrocatalytic Hydrogen Production

Amorphous materials, with abundant active sites and unique electronic configurations, have the potential to outperform their crystalline counterparts in high-performance catalysis for clean energy. However, their synthesis and compositional optimization remain underexplored due to the strict conditions required for their formation. Here, we report the synthesis of ternary platinum-nickel-phosphorus (PtNiP) amorphous nanoparticles (ANPs) within milliseconds by flash Joule heating, which features ultrafast cooling that enables the vitrification of metal precursors. Through compositional optimization, the Gibbs free energy of hydrogen adsorption for Pt4Ni4P1 ANPs is optimized at 0.02 eV, an almost ideal value, even surpassing that of the benchmark metallic platinum catalyst. As a result, the PtNiP ANPs exhibited superior activity in electrocatalytic hydrogen evolution in acid electrolyte (η10 ∼ 14 mV, Tafel slope ∼ 18 mV dec–1, and mass activity 5× higher than state-of-the-art Pt/C). Life-cycle assessment and technoeconomic analysis suggest that, compared to existing processes, our approach enables notable reductions in greenhouse gas emission, energy consumption, and production cost for practical electrolyzer catalyst manufacturing.

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来源期刊
CiteScore
24.40
自引率
6.00%
发文量
2398
审稿时长
1.6 months
期刊介绍: The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.
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