Mn-triggered dynamic phase transition in NiSe2 catalyst via doping engineering for boosted urea electrolysis
Mn-triggered dynamic phase transition in NiSe2 catalyst via doping engineering for boosted urea electrolysis
研究概述
以Mn掺杂NiSe2调控尿素氧化过程中催化剂的动态重构，促进活性γ-NiOOH形成，并通过可逆γ–β相转变抑制不可逆过氧化。尿素氧化起始电位1.26 V，耦合制氢速率284.8 μmol/h，为未掺杂样品3.9倍；原位拉曼与计算支持相变及吸附调控机制。
谱图与表征信息
Fig. 2. High-resolution XPS spectra of Ni 2p (a), Se 3d (b), and Mn 2p (c) of NiSe2 and Mn/NiSe2, respectively. (d) Normalized XANES spectra near Ni K-edge of Ni foil, NiO, NiSe2 and Mn/NiSe2. WT-EXAFS spectra of NiSe2 (e) and Mn/NiSe2 (f) at the Ni K-edge. (g) FT-EXAFS spectra. Structural models of NiSe2 (h) and Mn/NiSe2 (i).