In Situ Coating Li3PO4 on Li6.5La3Zr1.5Ta0.5O12 Achieving Lithium Dendrites Inhibition and High Chemical Stability DOI Creative Commons
Jun Ma,

Ruilin He,

Yidong Jiang

et al.

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT Solid‐state electrolyte (SSE) is a potential way to solve the safety problems of lithium metal batteries (LMBs), and Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZTO) one most extensive research SSEs due its good air stability wide electrochemical window. However, residual alkali on LLZTO surface limits application with polyvinylidene difluoride (PVDF)‐contained binders, uncontrollable dendrites growing between grain boundaries particles would lead rapid capacity fading short circuit risk. Herein, by in situ coating PO 4 (LPO) (LLZTO@LPO) evenly, neutralized pH value reduced 8.84. The modified can be mixed PVDF solution shows fluidity without cross‐linking reaction, making subsequent ceramic separator feasible. LLZTO@LPO polyethylene (PE) achieve 1400 h (115% increase) stable cycling under 1 mA cm −2 current density Li∥Li symmetrical cell 80% retention after 260 cycles (NCM622‐Li coin mAh loading). Furthermore, SSE pellets were prepared assembled cell. critical (CCD) result increases from 0.7 1.6 owing that LPO effectively inhibits formation through boundaries. This work provides strategy for fabricating layer improve LMBs.

Language: Английский

In Situ Coating Li3PO4 on Li6.5La3Zr1.5Ta0.5O12 Achieving Lithium Dendrites Inhibition and High Chemical Stability DOI Creative Commons
Jun Ma,

Ruilin He,

Yidong Jiang

et al.

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT Solid‐state electrolyte (SSE) is a potential way to solve the safety problems of lithium metal batteries (LMBs), and Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZTO) one most extensive research SSEs due its good air stability wide electrochemical window. However, residual alkali on LLZTO surface limits application with polyvinylidene difluoride (PVDF)‐contained binders, uncontrollable dendrites growing between grain boundaries particles would lead rapid capacity fading short circuit risk. Herein, by in situ coating PO 4 (LPO) (LLZTO@LPO) evenly, neutralized pH value reduced 8.84. The modified can be mixed PVDF solution shows fluidity without cross‐linking reaction, making subsequent ceramic separator feasible. LLZTO@LPO polyethylene (PE) achieve 1400 h (115% increase) stable cycling under 1 mA cm −2 current density Li∥Li symmetrical cell 80% retention after 260 cycles (NCM622‐Li coin mAh loading). Furthermore, SSE pellets were prepared assembled cell. critical (CCD) result increases from 0.7 1.6 owing that LPO effectively inhibits formation through boundaries. This work provides strategy for fabricating layer improve LMBs.

Language: Английский

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