Synthesis of efficient and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is of great significance for solving energy crisis and fossil fuel shortage.The effective and simple preparation of iron carbide(Fe3C)-embedded and N-doped carbon composites was carried using an eight-coordinated iron complex bearing 2,2′-bipyridine-6,6′-dicarboxylic acid (H2bpdc) ligand as the precursor.By controlled pyrolysis,the as-prepared material shown high HER activity with a low onset overpotential (53 mV for reaching a current density of 1mA·cm-2) and a low overpotential (149 mV for reaching a current density of 10mA·cm-2) in 0.5mol/L H2SO4 solution.Such high performance was ascribed to the Fe3C surface with an optimized electron density by N-doped carbon.The relationship between the carbon composite electrocatalysts and their metal complex precursors was revealed.It also implied a feasible way toward the design of efficient and low-cost electrocatalysts in energy conversion.
Zheng Baocheng, Chen Dong, Qiu Deli, Ma Li
. Study on electrocatalytic property of Fe3C/N-doped carbon composite[J]. New Chemical Materials, 2020
, 48(10)
: 121
-124
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.026
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