TY - JOUR
AU1 - Feng, Yangyang
AU2 - Li, Yong
AU3 - Lin, Jing
AU4 - Wu, Huyue
AU5 - Zhu, Lei
AU6 - Zhang, Xiang
AU7 - Zhang, Linlin
AU8 - Sun, Chuan-Fu
AU9 - Wu, Maoxiang
AU1 - Wang, Yaobing
AB - Stable lithium metal negative electrodes are desirable to produce high-energy batteries. However, when practical testing conditions are applied, lithium metal is unstable during battery cycling. Here, we propose poly(2-hydroxyethyl acrylate-co-sodium benzenesulfonate) (PHS) as negative electrode protective layer. The PHS contains soft poly (2-hydroxyethyl acrylate) and poly(sodium p-styrene sulfonate), which improve electrode flexibility, connection with the Cu current collector and transport of Li ions. Transmission electron cryomicroscopy measurements reveal that PHS induces the formation of a solid electrolyte interphase with a fluorinated rigid and crystalline internal structure. Furthermore, theoretical calculations suggest that the -SO3- group of poly(sodium p-styrene sulfonate) promotes Li-ion motion towards interchain migration through cation-dipole interaction, thus, enabling uniform Li-ion diffusion. Electrochemical measurements of Li | |PHS-coated-Cu coin cells demonstrate an average Coulombic efficiency of 99.46% at 1 mA/cm2, 6 mAh/cm2 and 25 °C. Moreover, when the PHS-coated Li metal negative electrode is paired with a high-areal-capacity LiNi0.83Co0.11Mn0.06O2-based positive electrode in multi-layer pouch cell configuration, the battery delivers an initial capacity of 6.86 Ah (corresponding to a specific energy of 489.7 Wh/kg) and, a 91.1% discharge capacity retention after 150 cycles at 2.5 mA/cm2, 25 °C and 172 kPa.
TI - Production of high-energy 6-Ah-level Li | |LiNi0.83Co0.11Mn0.06O2 multi-layer pouch cells via negative electrode protective layer coating strategy
JF - Nature Communications
DO - 10.1038/s41467-023-39391-8
DA - 2023-06-19
UR - https://www.deepdyve.com/lp/pubmed-central/production-of-high-energy-6-ah-level-li-lini0-83co0-11mn0-06o2-multi-Zcbo9z04Mu
VL - 14
IS - 
DP - DeepDyve
ER -