Owing to the high power density and ultralong cycling life, supercapacitors represent the alternative to electrochemical batteries in energy storage applications. However, the relatively low energy density is the main...

In this Letter, we describe the development of a CoSe2 nanowires array on carbon cloth (CoSe2 NW/CC) through a facile two-step hydrothermal preparative strategy. As a novel 3D nanoarray electrode for electrochemical hydrogen evolution, CoSe2 NW/CC exhibits excellent catalytic activity and durability in acidic media. It needs overpotentials of 130 and 164 mV to approach 10 and 100 mA cm(-2), respectively, and its activity is maintained for at least 48 h. This work would open up new avenues for the rational design of a variety of arrayed transition-metal chalcogenide cathodes for technological application toward large-scale hydrogen generation from water.

Catalysts for electrochemical and photochemical reactions play critical roles in energy storage and conversion as well as degradation of organic pollutants. Due to unique structure, composition flexibility and high stability,...

In this communication, we report on the first use of Ni3Se2 film electrochemically deposited on Cu foam (Ni3Se2/CF) as a bifunctional catalyst for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) with good durability at alkaline media.

Developing hierarchical electrocatalysts for the oxygen evolution reaction (OER) is of great importance for electrochemical hydrogen production. Here, we describe the development of hierarchical CuO@NiCo layered double hydroxide core-shell nanoarray...

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