Optimizing Electrocatalytic Hydrogen Evolution Stability via Minimal Bubble Adhesion at Electrodeposited Crack-Structured NiPx Catalysts
Qian Sun , Xiaoyu Hao , Dina Zhang , Tianyi Zhang , Yuanfang Zhao , Xiaolei Huang , Xuqing Liu
Energy & Environmental Materials ›› 2024, Vol. 7 ›› Issue (5) : e12726
Optimizing Electrocatalytic Hydrogen Evolution Stability via Minimal Bubble Adhesion at Electrodeposited Crack-Structured NiPx Catalysts
In response to the ongoing energy crisis, advancing the field of electrocatalytic water splitting is of utmost significance, necessitating the urgent development of high-performance, cost-effective, and durable hydrogen evolution reaction catalysts. But the generated gas bubble adherence to the electrode surface and sluggish separation contribute to significant energy loss, primarily due to the insufficient exposure of active sites, thus substantially hindering electrochemical performance. Here, we successfully developed a superaerophobic catalytic electrode by loading phosphorus-doped nickel metal (NiPx) onto various conductive substrates via an electrodeposition method. The electrode exhibits a unique surface structure, characterized by prominent surface fissures, which not only exposes additional active sites but also endows the electrode with superaerophobic properties. The NiPx/Ti electrode demonstrates superior electrocatalytic activity for hydrogen evolution reaction, significantly outperforming a platinum plate, displaying an overpotential of mere 216 mV to achieve a current density of -500 mA cm-2 in 1 M KOH. Furthermore, the NiPx/Ti electrode manifests outstanding durability and robustness during continuous electrolysis, maintaining stability at a current density of -10 mA cm-2 over a duration of 2000 h. Owing to the straightforward and scalable preparation methods, this highly efficient and stable NiPx/Ti electrocatalyst offers a novel strategy for the development of industrial water electrolysis.
electrocatalyst / gas bubble adhesion / hydrogen evolution reaction / long-term durability / superaerophobic surface
| [1] |
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| [2] |
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| [3] |
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| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
| [40] |
|
| [41] |
|
| [42] |
|
| [43] |
|
| [44] |
|
| [45] |
|
| [46] |
|
| [47] |
|
| [48] |
|
| [49] |
|
| [50] |
|
2024 The Authors. Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.
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