Dual CuCl doped argyrodite superconductor to boost the interfacial compatibility and air stability for all solid-state lithium metal batteries

被引：102

作者：

Taklu, Bereket Woldegbreal ^{[1
]}

Su, Wei-Nien ^{[1
]}

Nikodimos, Yosef ^{[2
]}

Lakshmanan, Keseven ^{[1
]}

Temesgen, Nigusu Tiruneh ^{[2
]}

Lin, Pei-Xuan ^{[2
]}

Jiang, Shi-Kai ^{[2
]}

Huang, Chen-Jui ^{[2
]}

Wang, Di-Yan ^{[4
]}

Sheu, Hwo-Shuenn ^{[5
]}

Wu, She-Huang ^{[1
,2
]}

Hwang, Bing Joe ^{[2
,3
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol, Nanoelectrochem Lab, Taipei 106, Taiwan

[2] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Nanoelectrochem Lab, Taipei 106, Taiwan

[3] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Sustainable Energy Dev Ctr, Taipei 106, Taiwan

[4] Tunghai Univ, Dept Chem, Taichung 40704, Taiwan

[5] Natl Synchrotron Radiat Res Ctr NSRRC, Hsinchu 30076, Taiwan

来源：

NANO ENERGY | 2021年 / 90卷

关键词：

All-solid-state batteries; Lithium argyrodite; Air stability; Dendrite suppression; Li metal compatibility; LI6PS5X X; ELECTROCHEMICAL REDOX; IONIC-CONDUCTIVITY; ELECTROLYTES; GLASS; BR; CL; IMPROVEMENT; SI;

D O I：

10.1016/j.nanoen.2021.106542

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：

The decent ductileness, high ionic conductivity, low cost, and versatility over synthesis methods make Li-argyrodite a promising for all-solid-state lithium batteries. However, its serious interfacial incompatibility with Li anode, dendrite growth, and intrinsic air instability impedes its practicability. Herein, we report a CuCl dual doped Li-argyrodite sulfide superb-conductor (Li6+3xP1-xCuxS5-xCl1+x) prepared to overcome these issues via ball-mill free synthesis approach. The maximum Li+ conductivity of 4.34 mS cm(-1) at room temperature with ultrawide voltage stability up to 8 V vs. Li/Li+ was achieved in Li6.3P0.9Cu0.1S4.9Cl1.1 (LPSC-1) via a both composite and planar electrode system and can suppress dendrite formation at a current density of 3 mA cm(-2) at 50 degrees C. The symmetrical cell cycled at 0.1 and 1 mA cm(-2) also demonstrates remarkable reversibility with negligible overpotential alteration for more than 2400 h and 400 h. An ex-situ XPS and AC impedance analysis proved enhanced interfacial compatibility at Li vertical bar SE and achieved a critical current density of 3 mA cm(-2). More interestingly, incorporating soft acid Cu in LPSC-1 boosts the air stability and suppresses H2S generation by twofolds. The XRD for the LPSC-1 before and after air exposure proves the decrease in the oxophilicity of the sulfide solid electrolyte.

引用

页数：11

共 61 条

[1] Boosting Solid-State Diffusivity and Conductivity in Lithium Superionic Argyrodites by Halide Substitution [J].