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- W4365816085 abstract "Water electrolysis to generate hydrogen (H2) and oxygen (O2) was a sustainable alternative for clean energy in the future but remained challenging. Herein, we fabricated a nanoneedle-like CoP core coated by a P,N-codoped carbon shell (CoP@PNC@NF). The hierarchical structure, unique nanoneedle-like morphology, CoP core, and P,N-codoped carbon shell were responsible for the high electrocatalytic activity. Electrocatalytic tests demonstrated that CoP@PNC@NF displayed low overpotentials of 137.6 and 148.4 mV, as well as Tafel slopes of 59.89 and 56.40 mV dec−1 for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, at 10 mA cm−2 in 1.0 M KOH. The bifunctional electrocatalyst CoP@PNC@NF also exhibited a low cell voltage of 1.458 V to yield 10 mA cm−2 in the two-electrode system and could maintain the activity for 50 h. The Faradaic efficiencies of CoP@PNC@NF for both HER and OER were nearly 100%. The result outperformed the precious-metal-based electrocatalyst apparatus (RuO2||Pt/C) and other carbon-coated transition-metal phosphides (TMPs). This work paved the way for the rational design of carbon shell-coated TMPs with low energy barriers for converting and storing electrochemical energy." @default.
- W4365816085 created "2023-04-16" @default.
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- W4365816085 date "2023-08-01" @default.
- W4365816085 modified "2023-10-15" @default.
- W4365816085 title "Construction of P,N-codoped carbon shell coated CoP nanoneedle array with enhanced OER performance for overall water splitting" @default.
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- W4365816085 doi "https://doi.org/10.1016/j.ijhydene.2023.03.426" @default.
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