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Academic Journal of Materials & Chemistry, 2023, 4(7); doi: 10.25236/AJMC.2023.040715.

Study on a high-efficiency catalyst for urea electrolysis

Author(s)

Shuai Geng, Bo Hai, Lijun Ding, Jinrui Ni, Heping Shi

Corresponding Author:
Heping Shi
Affiliation(s)

College of Science, Inner Mongolia Agricultural University, Hohhot, 010000, China

Abstract

The Urea oxidation reaction (UOR) process has a slow four-electron transfer step, and it is necessary to design a catalyst with improved reaction kinetics and excellent mass transfer ability. Utilizing 316 stainless steel mesh (SSM) with mesoporous structure, A hydrothermal method and high temperature vapor phosphating methods were used for constructing a NiP2-FeP4(x:y)/SSM compounds, NiP2-FeP4(7:1)/SSM obtain the best performance with a potential of only 1.47 V at a current density of 100 mA·cm-2. Speculated that the exposure of active sites is ensured on the basis of retaining the Layered Double Hydroxide (LDH), and the synergistic effect of metal-like compounds NiP2 and FeP4 enhances the electron transfer ability, thereby improving the slow kinetics of UOR. Therefore, the NiP2-FeP4(7:1)/SSM complex is expected to be an effective catalyst for the electrooxidation of urea.

Keywords

LDH; nickel phosphide; Iron phosphide; UOR; catalyst

Cite This Paper

Shuai Geng, Bo Hai, Lijun Ding, Jinrui Ni, Heping Shi. Study on a high-efficiency catalyst for urea electrolysis. Academic Journal of Materials & Chemistry (2023) Vol. 4, Issue 7: 95-99. https://doi.org/10.25236/AJMC.2023.040715.

References

[1] Friedemann A. Life after fossil fuels [M]. Cham: Springer, 2021.

[2] Chu S, Majumdar A. Opportunities and challenges for a sustainable energy future [J]. Nature, 2012, 488(7411): 294-303.

[3] Zhu B, Zou R, Xu Q. Metal–organic framework-based catalysts for hydrogen evolution [J]. Advanced Energy Materials, 2018, 8(24): 1801193.

[4] Spöri C, Kwan J T H, Bonakdarpour A, et al. The stability challenges of oxygen evolving catalysts: towards a common fundamental understanding and mitigation of catalyst degradation [J]. Angewandte Chemie International Edition, 2017, 56(22): 5994-6021.

[5] Boggs B K, King R L, Botte G G. Urea electrolysis: direct hydrogen production from urine [J]. Chemical Communications, 2009 (32): 4859-4861.

[6] Hu X, Zhu J, Li J, et al. Urea Electrooxidation: Current Development and Understanding of Ni‐Based Catalysts [J]. ChemElectroChem, 2020, 7(15): 3211-3228.

[7] Liang Y, Liu Q, Luo Y, et al. ZnO.76CoO.24S/CoS2 nanowires array for efficient electrochemical splitting of water[J]. Electrochimica Acta, 2016, 190: 360-364.

[8] Hao W, Wu R, Zhang R, et al. Electroless plating of highly efficient bifunctional boride‐based electrodes toward practical overall water splitting [J]. Advanced Energy Materials, 2018, 8(26): 1801372.

[9] Liu H, Zhu S, Cui Z, et al. Ni2P nanoflakes for the high-performing urea oxidation reaction: linking active sites to a UOR mechanism [J]. Nanoscale, 2021, 13(3): 1759-1769.

[10] W.C. Lee, K.B, Kim, N.G. Gurudatt, K.K. Hussain, C.S. Chio, D.S. Park, Y.B. Shim, Comparison of enzymatic and non-enzymatic glucose sensors based on hierarchical Au-Ni alloy with conductive polymer, Biosens. Bioelectron. 130 (2019) 48-54.