Nov 26, 2019 · We demonstrate here the design and synthesis of CoP nanoframes (CoP NFs) by a strategy involving precipitation, chemical etching, and low-temperature phosphidation steps. It results in impressive bifunctional catalytic activities for both HER and OER and consequently enables a highly efficient water electrolyzer with a current density of 10 mA ...

Feb 28, 2021 · The crystallographic information was examined using a Rigaku D-max-γ X-ray diffractometer (XRD) with Cu-Kα X-ray radiation (λ = 1.5418 Å) under scanning rate of 4° min −1. The morphologies were examined using JEOL JSM-6700F field-emission scanning electron microscope (FE-SEM).

Oct 5, 2021 · Core-shell-structured CoP x@FeOOH is designed as an efficient catalyst for selective seawater oxidation. This hierarchical catalyst has high conductivity, large surface area, and improved turnover frequency, which lead to superb OER performance.

Mar 23, 2025 · The XRD patterns of CoP and Br-CoP after a 1-h OER reaction are shown in Figure 4b,c. It can be seen that the XRD pattern of the CoP sample has sharp Co(OH) 2 characteristic peaks at 19.5° and 38.3°, but no CoOOH diffraction peak appears.

The synthesized CoP–Co2P/RGO composite shows a flake-like structure consisted of many cobalt phosphide nanospheres densely aggregated on the surface of the RGO nanosheets which in turn...

Aug 1, 2018 · Electron transfer from CoP shell to Au core was verified by XPS and in-situ XANES results. Au metal as core modulate the hydrogen adsorption free energy of CoP shell to enhance its HER performance. This work represents a strategy for designing HER electrocatalyst.

The synthesized composite was comprehensively characterized using various analytical tools such as FTIR, XRD, XPS, VSM, TGA, EDS, ED-XRF and AAS.

Apr 4, 2017 · Characterization by in situ X-ray diffraction (XRD) monitored the topotactic transformation underlying the controllable formation of CoP/CoP 2 via tuning the phosphorization time.

Mar 7, 2022 · Herein, we report a facile approach to enable the selective design of an electrochemically efficient cobalt phosphide oxide composite catalyst on carbon cloth (CoP-Co x O y /CC), with good activity and durability toward HER in alkaline medium (η 10 = −43 mV).

Herein, a novel robust CoP–carbon composite with highly dispersed CoP nanoparticles (NPs) immobilized in natural cellulose nanofiber network (CNF)-derived carbon (denoted as CoP@CNFC) is synthesized via chemical bonding through a facile hydrothermal and subsequent in situ phosphidation approach.