Bing Wang , Guanjian Chang , Yue Xu , Fengyu Zhou , Xin Liu , Yingfang Yao , Xi Zhu , Qingmei Su , Zhigang Zou
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引用次数: 0
Abstract
In-Situ Resource Utilization (ISRU) is essential for sustainable exploration of the moon. The surficial lunar basalts (LB) are the most likely primary feedstock in ISRU processes. In this work, we have developed an in-situ synthesis technology, laser scanning ablation, to synthesize LB-supported electrocatalysts for hydrogen evolution reaction (HER). The laser-induced high-entropy spherical LB becomes convenient supports for hosting well-dispersed Pt species. Owing to the atomic rearrangement caused by the high-energy laser irradiation, strong physicochemical interactions between Pt species and LB are confirmed with the formation of Pt-O and Pt-Fe bonds. The tight cohesion endows Pt/LB faster charge-transfer rate and higher turnover frequency during HER. In both alkaline and acidic media, the Pt/LB catalyst possesses a near-zero onset overpotential and a low Tafel slope, superior to most Pt catalysts loaded on other supports. It is theoretically verified that Pt-Fe or Pt-O coordination can result in a smaller reaction barrier and a shorter diffusion time than pure Pt, thereby improving the catalytic activity of HER. The LSA method provides a simple and robust path to process LB in-situ as an excellent catalyst carrier while enabling the deposition of various metals on its surface for extended application in ISRU.
期刊介绍:
Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem.
Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.