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. 2024 May 22;14(24):16661–16677. doi: 10.1039/d4ra01907e

Experimental parameters for the HER assessment of α-Co(OH)2, Ni-doped-Co(OH)2, and I & Ni co-doped-Co(OH)2.

S. No. Material HER overpotential (mV) Tafel slope (mV dec−1) R ct (Ω)
1 α-Co(OH)2 337 170 6.8
2 Ni–Co(OH)2 284 124 3.6
3 I & Ni–Co(OH)2 229 110 2.4