Kim, Minjun Lee, Seunghak Park, Dohyub Kang, Haeun Kam, Dayoung Park, Jun-Ho Oh, Si Hyoung Jung, Hun-Gi Choi, Wonchang 2024-01-19T10:04:08Z 2024-01-19T10:04:08Z 2023-03-02 2023-02 2168-0485 https://pubs.kist.re.kr/handle/201004/114034 Li metal is regarded as an ultimate anode material for high-energy-density lithium-ion batteries; however, addressing dendritic deposi-tion and large volume changes during cycling is essential to commercialize the Li metal anodes. Herein, we propose Ag-embedded N-doped carbon/Li-ion conductor double-shelled hollow spheres (Ag@NC@LAZP) as an electrode material for selective Li deposition. When constructing hollow spheres for Li storage, the use of lithiophilic Ag nanoseeds and N-doped carbon (NC) layers lowers the nucleation overpotential, thereby facilitating uniform Li deposition. However, if the lithiophilic NC layer is exposed outside the hollow spheres, Li may grow outside the hollow spheres. Therefore, the application of a Li1.5Al0.5Zr1.5(PO4)3 (LAZP) outer layer is effective for the complete deposition of Li into the spherical inner space by blocking the exposed lithiophilic sites. The stable Li plating/stripping of the Ag@NC@LAZP electrode was achieved by the Li-ion conductive LAZP outer layer, and accordingly, dendritic growth was eliminated and improved cycling with 98.2% Coulombic efficiency for more than 450 cycles was observed. Covering lithiophilic sites and guiding Li deposition through the Li-ion conductive layer are effective for achieving stable Li metal anodes. English American Chemical Society Tuning Lithiophilic Sites of Ag-Embedded N-Doped Carbon Hollow Spheres via Intentional Blocking Strategy for Ultrastable Li Metal Anode in Rechargeable Batteries Article 10.1021/acssuschemeng.2c05918 1 ACS Sustainable Chemistry & Engineering, v.11, no.5, pp.1785 - 1796 ACS Sustainable Chemistry & Engineering 11 5 1785 1796 N scie scopus 000925319100001 2-s2.0-85147168994 Chemistry, Multidisciplinary Green & Sustainable Science & Technology Engineering, Chemical Chemistry Science & Technology - Other Topics Engineering Article LITHIUM GRAPHENE CONDUCTIVITY ELECTROLYTE LAYER LIZR2(PO4)(3) INTERPHASE DEPOSITION VERSATILE SURFACE lithiophilic sites lithium-ion conductor coating double-shelled hollow sphere dendrite-free lithium metal anode