Boosting High‐Rate Sodium Storage Performance of N‐Doped Carbon‐Encapsulated Na3V2(PO4)3 Nanoparticles Anchoring on Carbon Cloth. Issue 43 (6th September 2019)

• Record Type: Journal Article
• Authors: Li, Wei; Yao, Zhujun; Zhou, Cheng‐ao; Wang, Xiuli; Xia, Xinhui; Gu, Changdong; Tu, Jiangping
• Is Part Of: Small. Volume 15:Issue 43(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-06
• Subjects: carbon cloth -- nitrogen doping -- sodium‐ion battery -- symmetric full cells -- vanadium phosphate sodium; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201902432
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: The further development of high‐power sodium‐ion batteries faces the severe challenge of achieving high‐rate cathode materials. Here, an integrated flexible electrode is constructed by smart combination of a conductive carbon cloth fiber skeleton and N‐doped carbon (NC) shell on Na3 V2 (PO4 )3 (NVP) nanoparticles via a simple impregnation method. In addition to the great electronic conductivity and high flexibility of carbon cloth, the NC shell also promotes ion/electron transport in the electrode. The flexible NVP@NC electrode renders preeminent rate capacities (80.7 mAh g −1 at 50 C for cathode; 48 mAh g −1 at 30 C for anode) and superior cycle performance. A flexible symmetric NVP@NC//NVP@NC full cell is endowed with fairly excellent rate performance as well as good cycle stability. The results demonstrate a powerful polybasic strategy design for fabricating electrodes with optimal performance. Abstract : An integrated NVP@NC flexible electrode is constructed by smart combination of a conductive carbon cloth skeleton and N‐doped carbon shell on Na3 V2 (PO4 )3 nanoparticles with superior Na storage performances.