Rational Design of Binder-Free Fe-Doped CuCo(OH)2 Nanosheets for High-Performance Water Oxidation

Komal Patil; Su Young Jang; Jin Hyeok Kim

Korean Journal of Materials Research, Vol.32, No.5, 237-242, May, 2022

DOI10.3740/MRSK.2022.32.5.237 Export Citation

Rational Design of Binder-Free Fe-Doped CuCo(OH)2 Nanosheets for High-Performance Water Oxidation

Komal Patil, Su Young Jang, and Jin Hyeok Kim^†

Optoelectronic Convergence Research Center, Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea

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Designing and producing a low-cost, high-current-density electrode with good electrocatalytic activity for the oxygen evolution reaction (OER) is still a major challenge for the industrial hydrogen energy economy. In this study, nanostructured Fe-doped CuCo(OH)2 was discovered to be a precedent electrocatalyst for OER with low overpotential, low Tafel slope, good durability, and high electrochemically active surface sites at reduced mass loadings. Fe-doped CuCo(OH)2 nanosheets are made using a hydrothermal synthesis process. These nanosheets are clumped together to form a highly open hierarchical structure. When used as an electrocatalyst, the Fe-doped CuCo(OH)2 nanosheets required an overpotential of 260 mV to reach a current density of 50 mA cm−2. Also, it showed a small Tafel slope of 72.9 mV dec−1, and superior stability while catalyzing the generation of O2 continuously for 20 hours. The Fe-doped CuCo(OH)2 was found to have a large number of active sites which provide hierarchical and stable transfer routes for both electrolyte ions and electrons, resulting in exceptional OER performance.

Keywords:Fe-doping;CuCo(OH)2;oxygen evolution reaction;nanosheets;electrocatalyst

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[1] Jamesh MI, J. Power Sources, 333, 213 (2016)

[2] Jamesh MI, Sun X, J. Power Sources, 400, 31 (2018)

[3] Patil K, Babar P, Lee DM, Karade V, Jo E, Korade S, Kim JH, Sustain. Energy Fuels, 4, 5254 (2020)

[4] Babar P, Patil K, Lee DM, Karade V, Gour K, Pawar S, Kim JH, J. Colloid Interface Sci., 584, 760 (2021)

[5] Patil K, Babar P, Bae H, Jo E, Jang JS, Bhoite P, Kolekar S, Kim JH, Sustain. Energy Fuels, 6, 474 (2022)

[6] Babar P, Patil K, Mahmood J, Kim SJ, Kim JH, Yavuz CT, Cell Rep. Phys. Sci., 3, 100762 (2022)

[7] Wang Q, Xu H, Qian X, Huang B, Wang K, Jin L, He G, Chen H, Inorg. Chem., 61, 3176 (2022)

[8] Li M, Ye KH, Qiu W, Wang Y, Ren H, J. Am. Chem. Soc., 144(12), 5247 (2022)

[9] Xu X, Tian X, Zhong Z, Kang L, Yao J, J. Power Sources, 424, 42 (2019)

[10] Patil K, Babar P, Kim JH, Korean J. Mater. Res., 30, 217 (2020)

[11] Zhuang M, Ou X, Dou Y, Zhang L, Zhang Q, Wu R, Ding Y, Shao M, Luo Z, Nano Lett., 16, 4691 (2016)

[12] Chauhan M, Reddy KP, Gopinath CS, Deka S, ACS Catal., 7, 5871 (2017)

[13] Salmanion M, Najafpour MM, Inorg. Chem., 60, 6073 (2021)

[14] Li J, Chu D, Baker DR, Leff A, Zheng P, Jiang R, ACS Appl. Energy Mater., 4, 9969 (2021)

[15] Zhang W, Chen G, Du Y, Zhu S, Zhang J, Liu G, Zhang F, Wang S, Wang X, ACS Appl. Energy Mater., 5, 3129 (2022)

[16] Li Z, Xin Y, Zhang Z, Wu H, Wang P, Sci. Rep., 5, 1 (2015)

[17] Pillai AS, Rajagopalan R, Amruthalakshmi A, Joseph J, Ajay A, Shakir I, Nair SV, Balakrishnan A, Colloids Surf. A: Physicochem. Eng. Asp., 470, 280 (2015)