daohang fenxiangbox searchbox qikanlogonew daohangnew searchboxnew navrightzone footerzone paper
中
Home > Journals > ACS Energy Letters
‹ Previous Article Next Article ›

Scalable and Economic Synthesis of High-Performance Na3V2(PO4)2F3 by a Solvothermal–Ball-Milling Method AITranslate

Hongming Yi; Le Lin; Moxiang Ling; Zhiqiang Lv; Rui Li; Qiang Fu; Huamin Zhang; Qiong Zheng; Xianfeng Li;
People’s Republic of China|University of Chinese Academy of Sciences; ShanghaiTech University; People’s Republic of China|University of Chinese Academy of Sciences; People’s Republic of China|University of Chinese Academy of Sciences; People’s Republic of China|University of Chinese Academy of Sciences; Dalian Institute of Chemical Physics; Dalian Institute of Chemical Physics; Dalian Institute of Chemical Physics; Dalian Institute of Chemical Physics
AITranslate
Publisher: ACS
Share Citation Information Add to Favorites

    Scan to share on WeChat or Moments

Use WeChat scan.
Share with WeChat friends or Moments

Abstract AITranslate

Na3V2(PO4)2F3 has been emerging as one of the most promising cathodes for sodium-ion batteries due to its stable NASICON structure and fast Na+ diffusion. However, present methods for preparation of Na3V2(PO4)2F3 suffer from either high energy consumption or generating poor rate performance. Herein, a cost-effective solvothermal–ball-milling method is proposed to solve the problem. In the solvothermal process, the morphology of Na3V2(PO4)2F3 varies from 0D to 3D with changing pH, in which 3D Na3V2(PO4)2F3 at pH = 3 shows optimal purity due to the fastest growth rate. With Ketjenblack (KB) coating by short-time ball-milling, the Na3V2(PO4)2F3 can be further nanosized with a highly graphited carbon coating layer. The purest Na3V2(PO4)2F3@KB from pH = 3 exhibited an initial capacity of 138 mAh g–1 @ 0.5 C and 122 mAh g–1 @ 40 C. Moreover, ultrahigh dosage over an 80 mmol of V source in one 100 mL Teflon-lined autoclave has been achieved for the first time.

KeyWords AITranslate

No data

Basic Information:

DOI：https://doi.org/10.1021/acsenergylett.9b00748

Chinese Library Classification Number:

Citation Information:

Na3V2(PO4)2F3 has been emerging as one of the most promising cathodes for sodium-ion batteries due to its stable NASICON structure and fast Na+ diffusion. However, present methods for preparation of Na3V2(PO4)2F3 suffer from either high energy consumption or generating poor rate performance. Herein, a cost-effective solvothermal–ball-milling method is proposed to solve the problem. In the solvothermal process, the morphology of Na3V2(PO4)2F3 varies from 0D to 3D with changing pH, in which 3D Na3V2(PO4)2F3 at pH = 3 shows optimal purity due to the fastest growth rate. With Ketjenblack (KB) coating by short-time ball-milling, the Na3V2(PO4)2F3 can be further nanosized with a highly graphited carbon coating layer. The purest Na3V2(PO4)2F3@KB from pH = 3 exhibited an initial capacity of 138 mAh g–1 @ 0.5 C and 122 mAh g–1 @ 40 C. Moreover, ultrahigh dosage over an 80 mmol of V source in one 100 mL Teflon-lined autoclave has been achieved for the first time.

quote

GB/T 7714-2015 [1] Hongming Yi, Le Lin, Moxiang Ling, et al. ACS Energy Letters, 2019(4). DOI:10.1021/acsenergylett.9b00748.
MLA [1] Hongming Yi, et al., ACS Energy Letters, no. 4, 2019, https://doi.org/10.1021/acsenergylett.9b00748.
APA [1] Hongming Yi, Le Lin, Moxiang Ling, Zhiqiang Lv, Rui Li, Qiang Fu, Huamin Zhang, Qiong Zheng, & Xianfeng Li. (2019). ACS Energy Letters(4). https://doi.org/10.1021/acsenergylett.9b00748
IEEE [1] Hongming Yi, Le Lin, Moxiang Ling, Zhiqiang Lv, Rui Li, Qiang Fu, Huamin Zhang, Qiong Zheng, and Xianfeng Li, ACS Energy Letters, no. 4, 2019, doi: 10.1021/acsenergylett.9b00748.