Synergistic effect of high concentration sodium bis(fluorosulfonyl)imide electrolyte and fluorinated ethylene carbonate enabling stability and high-rate performance of Na metal batteries

被引：5

作者：

Nguyen, Trung Thien ^{[1
]}

Chau, Phuong Quy ^{[2
]}

Nguyen, Nhung Phuong Phi ^{[2
]}

Pham, Liem Thanh ^{[2
]}

Nguyen, Phan Hong ^{[2
]}

Huynh, Tuyen Thi Kim ^{[2
]}

Nguyen, Du Huy ^{[1
]}

Tran, Quan Le ^{[1
]}

Le, My Loan Phung ^{[2
,3
]}

Tran, Man Van ^{[2
,3
]}

机构：

[1] Vietnam Natl Univ, Univ Sci, Cent Lab Anal, Ho Chi Minh City, Vietnam

[2] Vietnam Natl Univ, Univ Sci, Appl Phys Chem Lab, Ho Chi Minh City, Vietnam

[3] Vietnam Natl Univ, Univ Sci, Fac Chem, Dept Phys Chem, Ho Chi Minh City, Vietnam

来源：

CHEMICAL PHYSICS LETTERS | 2023年 / 825卷

关键词：

Sodium metal batteries; High -rate performance; High concentration electrolyte; Al corrosion inhibition; NaFSI; DENDRITE-FREE LITHIUM; ION; INTERPHASE; SOLVATION; CHEMISTRY; STORAGE; ANODE;

D O I：

10.1016/j.cplett.2023.140576

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sodium metal anodes-based batteries have been widely attracted owing to their advantages like high specific capacity, abundant resources, de-alloying with copper. Herein, we demonstrate a high concentration electrolyte of NaFSI and DME (2:1 wt ratio) with FEC 3 wt% additive enabling a high-rate performance sodium metal batteries using Na3V2(PO4)(3) cathode up to 400 cycles. The novel electrolyte system exhibits superior thermal, electrochemical stability, inhibits Al corrosion, and improves cycling performance. The Na3V2(PO4)(3) cathodes could deliver an initial discharge capacity of 93.1 mAhg(-1), capacity retention of 76.4 % after 400 cycles, and Coulombic efficiency is over 90% during cycling test.

引用

页数：7