Comparison study of electrochemical and thermal stability of Na 3 V 2 ( PO 4 ) 3 in different electrolytes under room and elevated temperature

International Journal of Energy ResearchVolume 46, Issue 15 p. 23173-23194 RESEARCH ARTICLE Comparison study of electrochemical and thermal stability of Na3V2(PO4)3 in different electrolytes under room and elevated temperature Xiaoqin He, Xiaoqin He Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this authorPing Ping, Corresponding Author Ping Ping pingping@upc.edu.cn College of Chemical Engineering, China University of Petroleum (East China), Qingdao, China Correspondence Ping Ping, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China. Email: pingping@upc.edu.cnSearch for more papers by this authorDepeng Kong, Depeng Kong Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this authorGongquan Wang, Gongquan Wang Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this authorDongsheng Wang, Dongsheng Wang Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this author Xiaoqin He, Xiaoqin He Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this authorPing Ping, Corresponding Author Ping Ping pingping@upc.edu.cn College of Chemical Engineering, China University of Petroleum (East China), Qingdao, China Correspondence Ping Ping, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China. Email: pingping@upc.edu.cnSearch for more papers by this authorDepeng Kong, Depeng Kong Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this authorGongquan Wang, Gongquan Wang Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this authorDongsheng Wang, Dongsheng Wang Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao, ChinaSearch for more papers by this author First published: 02 September 2022 https://doi.org/10.1002/er.8619 Funding information: National Natural Science Foundation of China, Grant/Award Numbers: 51604297, 52174225 Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Summary The compatibility and reactivity between electrode materials and electrolytes is important to design safe batteries. As cathode material with guaranteed performance, the knowledge of thermal stability of the reactivity between Na3V2(PO4)3 (NVP) and carbonate-based electrolyte are still limited. Therefore, the electrochemical performance of NVP as a positive electrode material for sodium-ion batteries was tested at room temperature using coin cells with six conventional electrolytes. The results show that the charge-discharge performance of cells with different electrolytes can be ranked as cells with NaPF6 ≈ NaTFSI > NaClO4 based electrolytes. Moreover, the thermal reactivity of six kinds of electrolytes, charged NVP and their mixture was studied using accelerating rate calorimetry under elevated temperature. Thermal behaviors of NVP electrode system at elevated temperature under the condition of abundant electrolyte or electrode were clearly identified. Among the six electrolytes, the thermal stability of NVP in NaTFSI-based electrolyte was the best when more electrolyte was used, while that NaClO4 based electrolyte the best when less electrolyte was used. These results provide a basis for sodium-ion batteries using NVP as a cathode from the perspective of safety. CONFLICT OF INTEREST The authors declare no conflict of interest. Open Research DATA AVAILABILITY STATEMENT The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions. Supporting Information Filename Description er8619-sup-0001-Supinfo.docxWord 2007 document , 917.6 KB Appendix S1 Supporting Information Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume46, Issue15December 2022Pages 23173-23194 RelatedInformation