Energy LabPub Date : 1900-01-01DOI: 10.54227/elab.20220021
Xuli Chen, Hongwen Huang
{"title":"Rational Design and Preparation of Core-Shell Nanomaterials to Boost their Catalytic Performance","authors":"Xuli Chen, Hongwen Huang","doi":"10.54227/elab.20220021","DOIUrl":"https://doi.org/10.54227/elab.20220021","url":null,"abstract":"From the morphological point of view, catalysts can be classified into zero-dimensional (nanoparticle or quantum dot), one-dimensional (nanowire), two-dimensional (nanosheet), three-dimensional, and a combination of them. Among the varieties of morphology, core-shell structural catalysts with three-dimensional configuration stand out due to their unique construction and rich forms of interaction between the core and the shell, as well as their abundant ways of interaction with the catalytic intermediates. Constructing high-performance core-shell structural catalysts relies on the comprehensive understanding of the catalytic process and precise control over the catalyst structure. Here in this review, we attempt to sort out common synthetic methods for catalysts with core-shell structures from basic techniques to complex multiple processes. We will analyze how the core-shell configuration affects the catalytic performance from the microscopic to mesoscopic scales. We would resolve the structure-property relationship from the aspects of activity, selectivity, and durability, respectively. Finally, we would end this review with perspectives on the future development of core-shell catalysts.","PeriodicalId":192033,"journal":{"name":"Energy Lab","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114638315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy LabPub Date : 1900-01-01DOI: 10.54227/elab.20220020
B. Xia, Yang Yan, Xianying Wang
{"title":"Ionic liquid induced controllable synthesis of nickel-hydroxide-encapsulated NiFe layered double hydroxide for efficient oxygen evolution","authors":"B. Xia, Yang Yan, Xianying Wang","doi":"10.54227/elab.20220020","DOIUrl":"https://doi.org/10.54227/elab.20220020","url":null,"abstract":"The efficiency of electrochemical water splitting is severely restricted by the slow oxygen evolution reaction (OER) on the anode. Therefore, the design and synthesis of high-performance electrocatalysts for anodic oxygen evolution is crucial for the industrialization of hydrogen production by electrolysis of water. Herein, an efficient core-shell Ni(OH)2@NiFe LDH electrocatalyst was designed with the assistant of ionic liquid for OER. The ionic liquid delayed the crystallization ability of Ni2+ ions and then facilitated the formation of NiFe LDH coated Ni(OH)2 structure. The as-obtained core-shell Ni(OH)2@NiFe LDH exhibited outstanding OER electrocatalytic activity that only required overpotentials of 258 mV to deliver current densities of 100 mA cm-2, and a decent stability of at least 300 h under a large current density of 100 mA cm-2. This study provides a valuable reference for the structure design of NiFe LDH based catalyst.","PeriodicalId":192033,"journal":{"name":"Energy Lab","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114190646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}