![]() ![]() All-solid-state lithium batteries (ASSLBs) using nonflammable solid electrolytes may not only overcome safety concerns in LIBs but also achieve high energy density 1, 2, 3, 4, 5. ![]() The thermal instability of conventional lithium-ion batteries (LIBs), which originates from the intrinsic characteristics of liquid electrolytes, causes safety issues and has become a serious impediment to automotive applications. Furthermore, the difference between Li and Li-In dendrites is investigated and discussed to demonstrate the distinct type of dendrite morphology. Via ex situ measurements and simulations, we demonstrate that the irregular growth of Li-In dendrites leads to cell short circuits after room-temperature long-term cycling. In this work, we report the growth of Li-In dendritic structures when the alloy material is used in combination with a Li 6PS 5Cl solid electrolyte and Li(Ni 0.6Co 0.2Mn 0.2)O 2 positive electrode active material and cycled at high currents (e.g., 3.8 mA cm −2) and high cathode loading (e.g., 4 mAh cm −2). In this context, alloy materials such as lithium-indium (Li-In) alloys are widely used at the laboratory scale because of their (electro)chemical stability, although no in-depth investigations on their morphological stability have been reported yet. However, the application of lithium metal is hindered by issues associated with the growth of mossy and dendritic Li morphologies upon prolonged cell cycling and undesired reactions at the electrode/solid electrolyte interface. All-solid-state lithium-based batteries with inorganic solid electrolytes are considered a viable option for electrochemical energy storage applications. ![]()
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