B₄C enhances the supported platinum DER/HER performance

Abstract

The high energy barrier of D-O bond breaking leads to a slower kinetic reaction rate in the electrocatalytic deuterium evolution reaction (DER). Therefore, the platinum-carbon catalyst (Pt/C) showed unsatisfactory performance...

Synergistic electronic structure modulation of Pt using V2O3 and V8C7 for enhanced deuterium evolution performance

“…In Pt/V 2 O 3 /V 8 C 7 for example, the signals of metallic Pt 0 are found at 71.5 eV and 74.8 eV, oxidized Pt 2+ at 72.4 eV and 75.6 eV, and Pt 4+ at 73.5 eV and 76.6 eV. 11,68 In comparison, the binding energy of the Pt 0 species in Pt/V 2 O 3 and Pt/V 8 C 7 shifts to higher and lower values, respectively, suggesting that the electron density on Pt 0 follows the order of Pt/V 8 C 7 > Pt/V 2 O 3 /V 8 C 7 > Pt/V 2 O 3 . The V 2p spectra exhibit the coexistence of four oxidation states, namely V 5+ , V 4+ , V 3+ , and V carbide (V–C) species.…”

“…9,10 Electrolysis of heavy water (D 2 O) for D 2 production emerges as a simple and green alternative. 11,12 While alkaline electrolysis is the dominant technique for H 2 production due to its cost-effectiveness, it faces challenges such as impurity issues and slow response rates. [13][14][15][16] In contrast, the proton exchange membrane (PEM) electrolysis technology produces high-purity H 2 directly and tolerates frequent load changes, despite a higher capital and maintenance cost.…”

Recent progress on solar blind deep ultraviolet photodetectors based on metal halide perovskites

“…Besides the above methods, laser-assisted chemical vapor deposition (LACVD), pulsed laser deposition (PLD), vacuum thermal evaporation (VTE), and spin coating (SC) are also used to prepare CsCu 2 I 3 thin films. 72 The results show that all CsCu 2 I 3 thin films grown on the GaN substrate have the (221) plane corresponding to CsCu 2 I 3 (JCPDSNo. 77-0069), but the growth samples prepared by SC preferentially grow along the (112) plane (Fig.…”

A self-powered p-CuBr/n-Si heterojunction photodetector based on vacuum thermally evaporated high-quality CuBr films

“…25 Low-mismatch photodetectors have been reported in many literatures. [26][27][28][29][30][31][32][33][34][35][36] A lattice matched heterojunction is the basis for building highperformance semiconductor devices. Therefore, how to deposit a high-quality CuBr semiconductor film is of great research value.…”