Jinyan Huo, Qing Liu, Xiaofang Liu, Xuefeng Cheng, Dongyun Chen, Najun Li, Kin Liao, Qingfeng Xu* and Jianmei Lu*,
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引用次数: 0
摘要
将缓慢的氧进化反应 (OER) 换成热力学上有利的硫离子氧化反应 (SOR),使生产低能氢成为可能。我们在此报告一种电催化 SOR 耦合 HER 系统,该系统可联合生产硫和氢。我们在泡沫镍(NF)上制备了用于阳极 SOR 的 CoMoO4 纳米阵列,并在阴极 HER 中制备了掺杂 N 的 CoMoO4/NF(CoMoN/NF)。在 SOR 过程中,0.29 V(相对于 RHE)时的电流密度为 100 mA cm-2。氮化后,该电极在 HER 中的电压仅为 32 mV(相对于 RHE),电流密度可达 10 mA cm-2。耦合系统(SOR//HER)可稳定运行 150 小时。这项研究开发了一种高效节能的混合水电解系统,为有毒废物处理提供了一种可行的选择。
Sulfur Recovery Assisted Electrochemical Water Splitting for H2 Production Using CoMo-Based Nanorod Arrays Catalysts
Swapping the sluggish oxygen evolution reaction (OER) for the thermodynamically advantageous sulfur ion oxidation reaction (SOR) makes it possible to produce low-energy hydrogen. We report here on an electrocatalytic SOR-coupled HER system that allows for the joint production of sulfur and hydrogen. We prepare a CoMoO4 nanoarray on nickel foam (NF) for anodic SOR and N-doped CoMoO4/NF, CoMoN/NF, for cathodic HER. The current density of 100 mA cm–2 was obtained at 0.29 V (vs RHE) in the SOR process. After nitridation, the electrode can achieve a current density of 10 mA cm–2 in HER at a voltage of only 32 mV (vs RHE). The coupling system (SOR//HER) can run steadily for 150 h. Detailed exploration and discussion were conducted on the pathways of SOR. This work develops an energy-efficient mixed water electrolysis system for H2, providing a viable option for toxic waste treatment.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.