TY - JOUR
T1 - Critical current densities for high-performance all-solid-state Li-metal batteries
T2 - fundamentals, mechanisms, interfaces, materials, and applications
AU - Sarkar, Subhajit
AU - Thangadurai, Venkataraman
N1 - V.T. thanks the National Research Council of Canada for the support of this work. S.S. thanks the University of Calgary for Dean’s International Doctoral Recruitment Scholarship.
PY - 2022/4/8
Y1 - 2022/4/8
N2 - All-solid-state lithium batteries (ASSLBs) are considered promising next-generation energy storage devices due to their safety and high volumetric energy densities. However, achieving the key U.S. DOE milestone of a power density of 33 kW L-1appears to be a significant hurdle in current ASSLBs. One of the main reasons is that advancements in solid electrolyte (SE) conductivity have been prioritized over the critical current density (CCD) when employing an elemental Li anode. Several aspects of Li electrode- and SE interface-based difficulties must be resolved before commercialization. Here, we very deeply analyze some crucial parameters that effectively restrict Li dendrite formation while achieving high CCD. Mechanistic explanations are provided to comprehend the critical relationship between a cell failure and development of Li dendrites. The latest progress is discussed in achieving higher CCD in emerging SE structures, including Li-stuffed garnets, Na superionic conductors (NASICONs), Li sulfides, and lithium phosphorus oxynitride (LiPON). Furthermore, primary strategies for improving CCDs by tailoring SE design and stabilizing interfaces are proposed for advanced ASSLBs.
AB - All-solid-state lithium batteries (ASSLBs) are considered promising next-generation energy storage devices due to their safety and high volumetric energy densities. However, achieving the key U.S. DOE milestone of a power density of 33 kW L-1appears to be a significant hurdle in current ASSLBs. One of the main reasons is that advancements in solid electrolyte (SE) conductivity have been prioritized over the critical current density (CCD) when employing an elemental Li anode. Several aspects of Li electrode- and SE interface-based difficulties must be resolved before commercialization. Here, we very deeply analyze some crucial parameters that effectively restrict Li dendrite formation while achieving high CCD. Mechanistic explanations are provided to comprehend the critical relationship between a cell failure and development of Li dendrites. The latest progress is discussed in achieving higher CCD in emerging SE structures, including Li-stuffed garnets, Na superionic conductors (NASICONs), Li sulfides, and lithium phosphorus oxynitride (LiPON). Furthermore, primary strategies for improving CCDs by tailoring SE design and stabilizing interfaces are proposed for advanced ASSLBs.
U2 - 10.1021/acsenergylett.2c00003
DO - 10.1021/acsenergylett.2c00003
M3 - Review article
AN - SCOPUS:85127972244
SN - 2380-8195
VL - 7
SP - 1492
EP - 1527
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 4
ER -
