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Article Abstract
All-solid-state lithium batteries (ASSLBs) have attracted much attention owing to their high safety and energy density compared to conventional organic electrolytes. However, the interfaces between solid-state electrolytes and electrodes retain some knotty problems regarding compatibility. Among the various SSEs investigated in recent years, halide SSEs exhibit relatively good interfacial compatibility. The temperature-dependent interfacial compatibility of halide SSEs in solid-state batteries is investigated by thermal analysis using simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC) and X-ray diffraction (XRD). Halide SSEs, including rock-salt-type LiInCl and anti-perovskite-type LiOHCl, show good thermal stability with oxides LiCoO, LiMnO, and LiTiO up to 320 °C. Moreover, anti-perovskite-type LiOHCl shows a chemical reactivity with other battery materials (eg., LiFePO, LiNiCoMnO, Si-C, and LiAlTi(PO)) at 320°C, which reaches the melting point of LiOHCl. It indicated that LiOHCl has relatively high chemical reactivity after melting. In contrast, rock-salt-type LiInCl shows higher stability and interfacial compatibility. This work delivers insights into the selection of suitable battery materials with good compatibility for ASSLBs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9382350 | PMC |
| http://dx.doi.org/10.3389/fchem.2022.952875 | DOI Listing |
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