Songyang Lv, Shouzhi Wang, Qirui Zhang, Lin Xu, Ge Tian, Jiaoxian Yu, Guodong Wang, Lili Li, Xiangang Xu, Lei Zhang
{"title":"Regulation Active Sites of Porous GaN Crystal Via Mn3O4 Nanosheets for Advanced High Temperature Energy Storage","authors":"Songyang Lv, Shouzhi Wang, Qirui Zhang, Lin Xu, Ge Tian, Jiaoxian Yu, Guodong Wang, Lili Li, Xiangang Xu, Lei Zhang","doi":"10.1002/eem2.12866","DOIUrl":null,"url":null,"abstract":"<p>Gallium nitride (GaN) single crystal with prominent electron mobility and heat resistance have great potential in the high temperature integrate electric power systems. However, the sluggish charge storage kinetics and inadequate energy densities are bottlenecks to its practical application. Herein, the self-supported GaN/Mn<sub>3</sub>O<sub>4</sub> integrated electrode is developed for both energy harvesting and storage under the high temperature environment. The experimental and theoretical calculations results reveal that such integrated structures with Mn-N heterointerface bring abundant active sites and reconstruct low-energy barrier channels for efficient charge transferring, reasonably optimizing the ions adsorption ability and strengthening the structural stability. Consequently, the assembled GaN based supercapacitors deliver the power density of 34.0 mW cm<sup>−2</sup> with capacitance retention of 81.3% after 10 000 cycles at 130 °C. This work innovatively correlates the centimeter scale GaN single crystal with ideal theoretical capacity Mn<sub>3</sub>O<sub>4</sub> and provides an effective avenue for the follow-up energy storage applications of the wide bandgap semiconductor.</p>","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 3","pages":""},"PeriodicalIF":13.0000,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.12866","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Environmental Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eem2.12866","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Gallium nitride (GaN) single crystal with prominent electron mobility and heat resistance have great potential in the high temperature integrate electric power systems. However, the sluggish charge storage kinetics and inadequate energy densities are bottlenecks to its practical application. Herein, the self-supported GaN/Mn3O4 integrated electrode is developed for both energy harvesting and storage under the high temperature environment. The experimental and theoretical calculations results reveal that such integrated structures with Mn-N heterointerface bring abundant active sites and reconstruct low-energy barrier channels for efficient charge transferring, reasonably optimizing the ions adsorption ability and strengthening the structural stability. Consequently, the assembled GaN based supercapacitors deliver the power density of 34.0 mW cm−2 with capacitance retention of 81.3% after 10 000 cycles at 130 °C. This work innovatively correlates the centimeter scale GaN single crystal with ideal theoretical capacity Mn3O4 and provides an effective avenue for the follow-up energy storage applications of the wide bandgap semiconductor.
期刊介绍:
Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.