This study presents an enhanced method for improving the performance of Na0.44MnO2 (NMO) cathodes in sodium ion batteries by integrating nanostructuring and carbon nano-fiber hybridization. The approach yields an NMO\/Carbon NanoFiber hybrid with superior conductivity and rate performance, achieving significant capacity at high C-rates in a sodium sulfate electrolyte. Despite some capacity reduction due to nanowire bundling, the findings offer a promising avenue for advancing NMO-based sodium ion storage technologies.<\/p>\n","protected":false},"author":93,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[1302,1301],"targets":[1314],"pubblicazioni_tipologie":[773],"class_list":["post-197944","pubblicazioni","type-pubblicazioni","status-publish","hentry","tag-batteries","tag-sodium-ion-batteries","targets-press-media-en","pubblicazioni_tipologie-isi-article-en"],"acf":{"dont_show_hompage":true,"projects":{"ID":188409,"post_author":"93","post_date":"2024-06-13 15:10:21","post_date_gmt":"2024-06-13 13:10:21","post_content":"","post_title":"Electrochemical and thermal storage technologies","post_excerpt":"The goal of this project is to develop electrochemical and thermal storage technologies with improved performance and greater environmental and economic sustainability by optimizing the use of resources, material formulations and synthesis methods, diagnostic and control processes, and prototype design.","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"electrochemical-and-thermal-storage-technologies","to_ping":"","pinged":"","post_modified":"2024-07-06 15:23:41","post_modified_gmt":"2024-07-06 13:23:41","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.rse-web.it\/progetti\/electrochemical-and-thermal-storage-technologies\/","menu_order":0,"post_type":"progetti","post_mime_type":"","comment_count":"0","filter":"raw"},"order_posts":"","dont_show_search":false,"related_posts":false,"show_on_slider":false,"single_post_data":{"titolo_spot":"","post_content":"
We report an effective processing route, combining nanostructure formation and hybridization, to improve the rate performance of the tunnel-structure sodium manganese oxide Na0.44MnO2 (NMO) as a cathode material for aqueous sodium ion storage.<\/p>\n
<\/p>\n
We use hydrothermal synthesis to prepare an NMO\/CNF (Carbon NanoFiber) hybrid, consisting of uniform oxide nanowires with an average width of 70 nm and length in the range of several tenths of \u00b5m. The highly dispersed CNFs impart high conductivity to the NMO\/CNF electrode, allowing high-rate performance at a C-rate of up to 20 C, with a delivered capacity of more than half the theoretical value in a 1 M Na2SO4 electrolyte.<\/p>\n
<\/p>\n
Moreover, the NMO\/CNF hybrid shows good electrochemical stability under several hundred cycles at a high C-rate. However, the NMO nanowire electrodes reveal a lower-than-expected capacity, probably as a result of the tendency of nanowires to form bundles, which prevents direct contact with conductive fibers and induce the under-utilization of active material.<\/p>\n
<\/p>\n
With this study, we demonstrate a strong improvement of the otherwise inherently low-rate performance of NMO through oxide nanostructuring and hybridization with carbon fibers, paving the way for further research on NMO-based materials for aqueous sodium ion storage.<\/p>\n","scarica_file":false,"link_estreno":[{"link_text":"Download Publication","link":"https:\/\/www.mdpi.com\/2313-0105\/9\/8\/428"}],"button":{"text":"","link":""},"referente_group":false,"data_emissione":"2023-08-17","autori":"M. Soleimanzade, M. Radaelli (RSE S.p.A.)","destinazione":"MDPI Batteries, Vol. 9 Issue 8","rif_rse":"23013445"},"satellite_post_url":""},"yoast_head":"\n