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Tunable Reduction Optimizing Mo.sub.2C/Mo.sub.2N Heterostructure Enabling Efficient pH-Universal Hydrogen Evolution
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Tunable Reduction Optimizing Mo.sub.2C/Mo.sub.2N Heterostructure Enabling Efficient pH-Universal Hydrogen Evolution
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Journal Article
Tunable Reduction Optimizing Mo.sub.2C/Mo.sub.2N Heterostructure Enabling Efficient pH-Universal Hydrogen Evolution
2024
Overview
The development of safe, low-cost and highly active non-precious metal electrocatalysts plays a vital role in efficient hydrogen production. Herein, Mo.sub.2C/Mo.sub.2N heterostructure was in-situ synthesized by a two-step method for excellent hydrogen evolution performance at a universal pH range. The results show that the optimized MoCN-750-2h only needs 86.5, 102.5 and 120.5 mV overpotentials to reach 10 mA·cm.sup.-2 in alkaline, acidic and neutral media, respectively. Not only that, MoCN-750-2h had a low Tafel slope (37.2 and 88.5 mV·dec.sup.-1) in alkaline and neutral media, implying that catalytic kinetic is close to the level of Pt/C. These results can be attributed to reasonable C and N content in MoCN-750-2 h, optimizing the electron cloud distribution of Mo.sub.2C/Mo.sub.2N heterostructure to boost hydrogen production.
Publisher
Springer
Subject
