Experimental analysis on crucible selection of thermal properties of nitrate salt

Zhao, Mingzhi; Zou, Lijun; Wu, Yuting

doi:10.1016/j.egypro.2017.12.764

“…As suggested by earlier LLZO structure studies, see Ref. [58], this step involves Li local reordering in the occupied sites within the crystalline tLLZO structure, which transforms tLLZO (with regular and fully occupied Li sites) into cLLZO (with disordered Li site occupation). We next employed DSC to further investigate the kinetics of the phase transformation from aLLZO to crystalline cLLZO.…”

Section: Methodsmentioning

confidence: 79%

Time‐Temperature‐Transformation (TTT) Diagram of Battery‐Grade Li‐Garnet Electrolytes for Low‐Temperature Sustainable Synthesis

Zhu,

Chon,

Thompson

et al. 2023

Angew Chem Int Ed

9

0

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Efficient and affordable synthesis of Li+ functional ceramics is crucial for the scalable production of solid electrolytes for batteries. Li‐garnet Li7La3Zr2O12−d (LLZO), especially its cubic phase (cLLZO), attracts attention due to its high Li+ conductivity and wide electrochemical stability window. However, high sintering temperatures raise concerns about the cathode interface stability, production costs, and energy consumption for scalable manufacture. We show an alternative “sinter‐free” route to stabilize cLLZO as films at half of its sinter temperature. Specifically, we establish a time–temperature–transformation (TTT) diagram which captures the amorphous‐to‐crystalline LLZO transformation based on crystallization enthalpy analysis and confirm stabilization of thin‐film cLLZO at record low temperatures of 500 °C. Our findings pave the way for low‐temperature processing via TTT diagrams, which can be used for battery cell design targeting reduced carbon footprints in manufacturing.

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“…In addition, a good calibration of a device can be a guarantee for accurate measurements [49,50]. When thermal properties of salts are measured, an appropriate crucible should be considered [40,51,52], and so on. Apart from experimental operations, the way the transition temperature and the latent heat are determined from DTA or DSC curves can be one of the greatest sources of error.…”

Section: General Aspectsmentioning

confidence: 99%

Experimental investigation and thermodynamic evaluation of the CsNO3-LiNO3-NaNO3 ternary system

Kouassi

¹

,

Manouan

²

,

Zoro

³

et al. 2021

Journal of Alloys and Compounds

0

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Time‐Temperature‐Transformation (TTT) Diagram of Battery‐Grade Li‐Garnet Electrolytes for Low‐Temperature Sustainable Synthesis

Zhu,

Chon,

Thompson

et al. 2023

Angewandte Chemie

3

0

View full text Add to dashboard Cite

Efficient and affordable synthesis of Li+ functional ceramics is crucial for the scalable production of solid electrolytes for batteries. Li‐garnet Li7La3Zr2O12−d (LLZO), especially its cubic phase (cLLZO), attracts attention due to its high Li+ conductivity and wide electrochemical stability window. However, high sintering temperatures raise concerns about the cathode interface stability, production costs, and energy consumption for scalable manufacture. We show an alternative “sinter‐free” route to stabilize cLLZO as films at half of its sinter temperature. Specifically, we establish a time–temperature–transformation (TTT) diagram which captures the amorphous‐to‐crystalline LLZO transformation based on crystallization enthalpy analysis and confirm stabilization of thin‐film cLLZO at record low temperatures of 500 °C. Our findings pave the way for low‐temperature processing via TTT diagrams, which can be used for battery cell design targeting reduced carbon footprints in manufacturing.

show abstract

Experimental analysis on crucible selection of thermal properties of nitrate salt

Cited by 5 publications

References 7 publications

Time‐Temperature‐Transformation (TTT) Diagram of Battery‐Grade Li‐Garnet Electrolytes for Low‐Temperature Sustainable Synthesis

Time‐Temperature‐Transformation (TTT) Diagram of Battery‐Grade Li‐Garnet Electrolytes for Low‐Temperature Sustainable Synthesis

Experimental investigation and thermodynamic evaluation of the CsNO3-LiNO3-NaNO3 ternary system

Time‐Temperature‐Transformation (TTT) Diagram of Battery‐Grade Li‐Garnet Electrolytes for Low‐Temperature Sustainable Synthesis

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