A highly efficient diatomic nickel electrocatalyst for CO₂ reduction
2020
Sun, Meng-Jiao | Gong, Zhi-Wei | Yi, Jun-Dong | Zhang, Teng | Chen, Xiaodong | Cao, Rong
We report a facile but effective approach to construct a highly dispersed diatomic catalyst. A carbon-embedded diatomic Ni₂ catalyst was synthesized from carbon black, polyaniline and nickel(ii) salts. The resulting catalyst exhibits excellent activity for the CO₂ reduction reaction (CO₂RR) at low Ni content with a faradaic efficiency of CO over 95% in the potential range from −0.6 V to −1.0 V vs. reversible hydrogen electrode (RHE). A high specific current density of 37.2 A mg⁻¹ Ni was recorded at −1.1 V, among the highest reported values for Ni-based electrocatalysts.
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