High performance P-based argyrodite sulfide electrolytes enabled by Sb-based argyrodite doping for all-solid-state lithium metal batteries

Ma, Zhihui; Li, Ping; Shi, Jie; Sun, Feng; Fu, Yidi; Wang, Zhen; Fang, Yixing; Han, Junmei; Qu, Xuanhui

doi:10.1039/d4ta03873h

J. Mater. Chem. A

2024

DOI: 10.1039/d4ta03873h

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High performance P-based argyrodite sulfide electrolytes enabled by Sb-based argyrodite doping for all-solid-state lithium metal batteries

Zhihui Ma,

Ping Li,

Jie Shi

et al.

Abstract: An ingenious yet effective strategy was applied to prepare P-based Li-argyrodites with Sb-based Li-argyrodite doping. The incorporation of Sn, Sb and I endows the novel ternary-doped Li6PS5Cl electrolyte with much enhanced integrated performance.

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Performance Degradation Mechanism of the Si@N, S‐Doped Carbon Anode in Sulfide‐Based All‐Solid‐State Batteries

Sun,

Ma,

Xin

et al. 2024

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Silicon (Si) anode is a promising anode material for all‐solid‐state lithium batteries with ultra‐high theoretical specific capacity and low lithium dendrite risk. However, the inevitable vast volume expansion of Si anode during charge/discharge is recognized as a major limitation preventing its commercial application. Herein, an N, S self‐doped amorphous carbon layer coated on porous micron‐sized Si (p‐mSi@C) is designed to construct an electron/ion conducting network while ensuring structural and interfacial stability. Uneven distribution of von mises stresses during p‐mSi lithiation leads to irregular volume expansion and even fragmentation. Meanwhile, the growth of by‐products at the interface between p‐mSi and electrolyte contact leads to a rapid capacity decay. Compared to p‐mSi anode, p‐mSi@C reduces the risk of fragmentation thanks to the stress‐absorbing effect of amorphous carbon, delivering excellent electrochemical performance (2679.65 mAh g−1 at 0.2 mA cm−2 with initial coulombic efficiency of 84%). More importantly, the chemical failure mechanisms of p‐mSi and p‐mSi@C composite anodes are revealed through structural characterization, chemical analysis, and simulation, which provides the necessary theoretical guidance for practicalization.

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Performance Degradation Mechanism of the Si@N, S‐Doped Carbon Anode in Sulfide‐Based All‐Solid‐State Batteries

Sun,

Ma,

Xin

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

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High performance P-based argyrodite sulfide electrolytes enabled by Sb-based argyrodite doping for all-solid-state lithium metal batteries

Abstract: An ingenious yet effective strategy was applied to prepare P-based Li-argyrodites with Sb-based Li-argyrodite doping. The incorporation of Sn, Sb and I endows the novel ternary-doped Li6PS5Cl electrolyte with much enhanced integrated performance.

Cited by 1 publication

References 54 publications

Performance Degradation Mechanism of the Si@N, S‐Doped Carbon Anode in Sulfide‐Based All‐Solid‐State Batteries

Performance Degradation Mechanism of the Si@N, S‐Doped Carbon Anode in Sulfide‐Based All‐Solid‐State Batteries

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