Activating Co sites activity in Co(OH)2 via VN coupling to facilitate highly efficient oxygen evolution reaction

Nitrogen-Rich Conjugated Microporous Polymers with Improved Cobalt(II) Density for Highly Efficient Electrocatalytic Oxygen Evolution

“…As shown in Table S2, the performance of CMP-Py­(Co)@Co is competitive to and even better than other excellent porous polymer-based catalysts previously reported in the literature, such as COF-C4N (η 10 = 349 mV vs RHE), C4-SHz COF (η 10 = 320 mV vs RHE), Co 0.5 V 0.5 @COF-SO 3 (η 10 = 300 mV vs RHE), FeCoSe@NCNSs (η 10 = 320 mV vs RHE), FeCo@SNC (η 10 = 330 mV vs RHE), CoTIPP@CNT-2 (η 10 = 363 mV vs RHE), and ZJUT-1@Co (η 10 = 295 mV vs RHE) . In addition, the overpotential of CMP-Py­(Co)@Co is comparable to that of many other excellent OECs reported recently, such as Ni x Co 1– x @Ni x Co 1– x O/NCNT (η 10 = 380 mV vs RHE), NiMoC-NCNTs (η 10 = 310 mV vs RHE), and Co­(OH) 2 /VN@C (η 10 = 319 mV vs RHE) …”

“…64 In addition, the overpotential of CMP-Py(Co)@Co is comparable to that of many other excellent OECs reported recently, such as Ni x Co 1−x @Ni x Co 1−x O/NCNT (η 10 = 380 mV vs RHE), 65 NiMoC-NCNTs (η 10 = 310 mV vs RHE), 66 and Co(OH) 2 /VN@C (η 10 = 319 mV vs RHE). 67 The OER kinetics of CMPs were evaluated by Tafel slopes and electrochemical impedance spectroscopy. 68 The Tafel slope value of CMP-Py(Co)@Co is 80.1 mV dec −1 , lower than that of CMP-Py(Co) (96.8 mV dec −1 ) and RuO 2 (87.6 mV dec −1 ) (Figure 4b).…”