Bimetallic CoFeP hollow microspheres as highly efficient bifunctional electrocatalysts for overall water splitting in alkaline media

Preparation of Yolk–Shell‐Structured CoxFe1−xP with Enhanced OER Performance

“…[20] The spindlestructured Co 0.17 Fe 0.79 P/N-doped carbon reported by Chen et al showedg ood OER performance (h j¼10 mA cm À2 = 299 mV). [22] Even though av ariety of BTMP catalysts show superior performance, it is necessary to optimize their structure and composition to improve their properties. [22] Even though av ariety of BTMP catalysts show superior performance, it is necessary to optimize their structure and composition to improve their properties.…”

“…[21] Du et al reported that CoFeP hollow microspheres showeda n overpotential of 350 mV at ac urrent density of 10 mA cm À2 for OER, which was better than that of Pt/C (h j¼10 mA cm À2 = 510 mV). [22] Even though av ariety of BTMP catalysts show superior performance, it is necessary to optimize their structure and composition to improve their properties. In addition, the reactionm echanism of BTMPs as OER catalysts is unknown due to their complex compositions.…”

Ce‐Doped Ordered Mesoporous Cobalt Ferrite Phosphides as Robust Catalysts for Water Oxidation

“…Excitingly, the 5 % Ce‐CoP/Fe 2 P exhibits higher catalytic activity towards OER compared with RuO 2 , and the catalytic activities of CoP/Fe 2 P with different Ce contents followed the order: 5 % Ce‐CoP/Fe 2 P>7 % Ce‐CoP/Fe 2 P>3 % Ce‐CoP/Fe 2 P>CoP/Fe 2 P, indicating that the Ce doping has a significant effect in terms of enhanced OER activities compared with CoP/Fe 2 P. More specifically, the overpotential at the current densities of 10 mA cm −2 and 50 mA cm −2 of 5 % Ce‐CoP/Fe 2 P are 250 mV and 315 mV, respectively, which are much lower than those of 3 % Ce‐CoP/Fe 2 P ( η 10 =275 mV, η 50 =347 mV), 7 % Ce‐CoP/Fe 2 P ( η 10 =260 mV, η 50 =333 mV), and CoP/Fe 2 P ( η 10 =295 mV, η 50 =363 mV; Figure b). Note that the superior OER performance of Ce‐CoP/Fe 2 P has beaten most of the reported Co/Fe‐P‐based OER electrocatalysts, and is even more active than the commercial RuO 2 catalyst (Figure c) . The corresponding Tafel slopes, which can be considered as indicators for the OER kinetics of different catalysts, are shown in Figure d. The Tafel slope for 5 % Ce‐CoP/Fe 2 P is 46.1 mV dec −1 , which is lower than that of 3 % Ce‐CoP/Fe 2 P (70.6 mV dec −1 ), 7 % Ce‐CoP/Fe 2 P (59.0 mV dec −1 ), CoP/Fe 2 P (78.6 mV dec −1 ), and RuO 2 (85.1 mV dec −1 ), indicating the fast increase of oxygen generation rate with the applied overpotential of 5 % Ce‐CoP/Fe 2 P.…”

“…Note that the superiorO ER performance of Ce-CoP/Fe 2 Ph as beaten most of the reported Co/Fe-P-based OER electrocatalysts, and is even more active than the commercial RuO 2 catalyst (Figure 3c). [37][38][39][40][41][42][43][44][45] The corresponding Ta fel slopes, which can be considered as indicatorsf or the OER kinetics of different catalysts, are shown in Figure 3d.T he Tafel slope for 5% Ce-CoP/Fe 2 Pi s 46.1 mV dec À1 ,w hich is lower than that of 3% Ce-CoP/Fe 2 P (70.6 mV dec À1 ), 7% Ce-CoP/Fe 2 P( 59.0 mV dec À1 ), CoP/Fe 2 P (78.6 mV dec À1 ), and RuO 2 (85.1 mV dec À1 ), indicatingt he fast increaseo fo xygen generation ratew ith the applied overpotential of 5% Ce-CoP/Fe 2 P.…”

Novel Method of MoS2 Decorated CdS Core‐shell Nano‐Heterojunctions for Highly Efficient and Stable Hydrogen Generation

“…On the other hand, the individual defects of a single material are reduced. In recent years, a series of nanomaterials with core‐shell structures such as Pt@Rh, BiVO 4 @TiO 2 , CoP/FeP, AgPO 4 @PANI, Co 3 O 4 /ZnO, Si/WO 3 , TiO 2 /WO 3 /g‐C 3 N 4 and PbS/ZnS have been studied and prepared. These nanomaterials have been proved to have broad application prospects in photocatalysis, battery, gas storage and separation …”