Coproduction of potassium diformate and hydrogen via glycerol electrooxidation at industry-level current density

IF 4 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2026-04-16 DOI:10.1002/aic.70408

Fanpeng Ma, Lingyu Gao, Huanhuan Guo, Chen Chen, Xinyi Huo, Yan Fu, Jinli Zhang

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引用次数: 0

Abstract

The economics of conventional water electrolysis is restricted by the energy-intensive oxygen evolution. To address this, we fabricate nanoneedle-like NiCo₂O₄ electrocatalyst capable of achieving efficient selective glycerol electrooxidation at low potential of 1.35 V vs. RHE, facilitated by synergistic redox cycling between Ni and Co sites in electrogenerated Ni/Co(OOH) species. Stable electrolysis at 500 mA cm⁻² for 240 h markedly reduces the cell voltage by 551 mV and the energy consumption by 1.59 kWh Nm⁻³ H₂ as compared to water splitting. Impressively, we establish an industrial-scale integrated electrolysis system with 11 electrode pairs (10 × 10 cm² each), enabling high production of potassium diformate within a short period of time. Techno-economic analysis confirms strong profitability for the coupled system, validating a feasible “green-hydrogen-production-sustained-by-chemical-revenue” paradigm. This work offers a high-performance spinel-based anode material that efficiently drives coproduction of high-value-added chemical and hydrogen at the industrial level.

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二甲酸钾和氢通过甘油电氧化在工业水平电流密度的合作生产

传统电解水的经济性受到能量密集型析氧的限制。为了解决这个问题，我们制造了纳米针状NiCo2O4电催化剂，能够在低电位（1.35 V vs. RHE）下实现高效的甘油选择性电氧化，这是由电生成的Ni/Co（OOH）物质中Ni和Co位点之间的协同氧化还原循环促进的。与水分解相比，500 mA cm−2稳定电解240 h可显著降低电池电压551 mV，能耗1.59 kWh Nm−3 H2。令人印象深刻的是，我们建立了一个工业规模的集成电解系统，有11对电极（每对10 × 10 cm2），可以在短时间内高产出二甲酸钾。技术经济分析证实了耦合系统的强大盈利能力，验证了可行的“绿色制氢-化学维持-收入”模式。这项工作提供了一种高性能尖晶石基阳极材料，可以在工业水平上有效地推动高附加值化学品和氢气的联合生产。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.