Channel‐Rich Pt_0.23Mn_0.42Ni_0.35 Ternary Alloy Nanocatalysts for Efficient Hydrogen Evolution

Abstract

The development of highly active and durable electrocatalysts with low Pt content for key reactions (hydrogen evolution reactions) in acidic electrolyte environments is desirable but remains an open challenge for clean and efficient energy conversion. Here, homogeneous, and unique Pt 0.23 Mn 0.42 Ni 0.35 flower-like nanostructure were firstly synthesized by a simple low-temperature oil-phase strategy. These Pt 0.23 Mn 0.42 Ni 0.35 cata-lysts exhibit a significantly increased electrochemically active surface area and excellent electrical conductivity due to their alloy nature, uniform, and unique channel-rich morphological characteristics. The new-type catalyst shows an ultra-small overpotential of 23 mV at a current density of 10 mA cm À 2 , high mass activity (7.61 A mg À 1 Pt at À 0.07 V) and excellent stability in acidic media.

Regulation of Rate‐Determining Step on (RhxNi1‐x)2P for Enhanced Alkaline Hydrogen Oxidation Reaction

“…With the increasingly serious energy and environmental issues, hydrogen has been considered as one of the best alternatives for fossil fuel owing to its clean, effective and renewable features. [1][2][3][4][5] Hydrogen fuel cells have become the key to converting hydrogen to electrical energy. [6][7][8] Currently, compared with the commercialized proton exchange membrane fuel cells (PEMFC), anion exchange membrane fuel cells (AEMFC) have received considerable attentions due to the remarkable performance of non-noble metal materials as catalysts for the cathodic oxygen reduction reaction (ORR) under alkaline electrolyte.…”

“…With the increasingly serious energy and environmental issues, hydrogen has been considered as one of the best alternatives for fossil fuel owing to its clean, effective and renewable features [1–5] . Hydrogen fuel cells have become the key to converting hydrogen to electrical energy [6–8] .…”