Niobium sulfide nanocomposites as cathode materials for all-solid-state lithium batteries with enhanced electrochemical performance

Wang, Na; Chang, Mingyuan; Xie, Wenrui; Liu, Gaozhan; Zhang, Lu; He, Hao; Yao, Xiayin

doi:10.1039/d4nr01035c

Nanoscale

2024

DOI: 10.1039/d4nr01035c

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Niobium sulfide nanocomposites as cathode materials for all-solid-state lithium batteries with enhanced electrochemical performance

Na Wang,

Mingyuan Chang,

Wenrui Xie

et al.

Abstract: The a-NbS4/20%VGCF@15%Li7P3S11 nanocomposite shows superior electronic/ionic conductivity by five and two orders of magnitude of those of NbS4, enabling all-solid-state lithium batteries with enhanced electrochemical performances.

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Silver Thiophosphate (Ag₃PS₄) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

Zhang,

Wang,

Mazzio

et al. 2024

Energy Tech

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Beyond its Li‐ion conductivity, the solid electrolyte lithium thiophosphate (β‐Li3PS4) exhibits redox activity when its electrochemical stability window is exceeded. As this redox activity can be (partially) reversible, thiophosphates may be used as cathode active materials (CAM). Silver thiophosphate (Ag3PS4) is a well‐known Ag‐ion conductor, which has the same crystal structure and similar chemical composition as β‐Li3PS4. Here, Ag3PS4 is selected and studied as the CAM for Li solid‐state batteries (Li‐SSBs) with the configuration (In/InLi| β‐Li3PS4| Ag3PS4: β‐Li3PS4: C65 = 40: 50: 10 wt%). The cells provide a discharge capacity of 325 mAh g−1 at 10 mA g−1, but suffer from continuous capacity fading during cycling with an average Coulomb efficiency of 97% at 50 mA g−1. The reaction mechanism is studied using X‐ray diffraction, X‐ray photoelectron spectroscopy, Raman spectroscopy, and impedance spectroscopy. Overall, the reaction of Li with Ag3PS4 is found to be initially partially reversible, but over cycling Ag2S and S8 become the active materials along with the formation of other byproducts such as Ag2P2S6 and Li2P2S6.

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Silver Thiophosphate (Ag₃PS₄) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

Zhang,

Wang,

Mazzio

et al. 2024

Energy Tech

View full text Add to dashboard Cite

show abstract

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Niobium sulfide nanocomposites as cathode materials for all-solid-state lithium batteries with enhanced electrochemical performance

Abstract: The a-NbS4/20%VGCF@15%Li7P3S11 nanocomposite shows superior electronic/ionic conductivity by five and two orders of magnitude of those of NbS4, enabling all-solid-state lithium batteries with enhanced electrochemical performances.

Cited by 1 publication

References 33 publications

Silver Thiophosphate (Ag₃PS₄) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

Silver Thiophosphate (Ag₃PS₄) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

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Niobium sulfide nanocomposites as cathode materials for all-solid-state lithium batteries with enhanced electrochemical performance

Abstract: The a-NbS4/20%VGCF@15%Li7P3S11 nanocomposite shows superior electronic/ionic conductivity by five and two orders of magnitude of those of NbS4, enabling all-solid-state lithium batteries with enhanced electrochemical performances.

Cited by 1 publication

References 33 publications

Silver Thiophosphate (Ag3PS4) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

Silver Thiophosphate (Ag3PS4) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

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Silver Thiophosphate (Ag₃PS₄) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries

Silver Thiophosphate (Ag₃PS₄) as a Multielectron Reaction Active Material for Lithium Solid‐State Batteries