Jo, Hyeonmin Lee, Jun-Won Kwon, Eunji Yu, Seungho Kim, Byung Gon Park, Seongsoo Moon, Janghyuk Ko, Min Jae Lim, Hee-Dae 2025-01-07T02:30:22Z 2025-01-07T02:30:22Z 2024-12-30 2024-12 1936-0851 https://pubs.kist.re.kr/handle/201004/151471 Dendritic challenges in Li metal batteries are commonly resolved using porous three-dimensional (3D) current collectors, which have a significant issue in that Li is deposited from the top (top growth) of the structure rather than from the bottom (bottom growth), failing to effectively suppress dendrite growth and volumetric expansion. We propose the structure incorporating a gradient lithiophilic seed within a 3D framework by pulse electroplating Mg, specifically targeting the near bottom to promote bottom growth and achieve dense Li deposition. This method achieves precise control over the catalytic seed size and distribution. Optimal conditions for maximizing the catalytic effect are identified. The resulting Mg-gradient porous-Cu structure exhibits superior Li-plating behavior with bottom growth, significantly reducing dendrite formation and improving cycle life. The mechanistic origin of bottom-guided Li growth is supported by DFT and 3D simulation results. This method presents a significant step forward in developing high-performance Li-metal batteries. English American Chemical Society Electrochemically Tailored Host Design with Gradient Seeds for Dendrite-Free Li Metal Batteries Article 10.1021/acsnano.4c15556 1 ACS Nano, v.18, no.52, pp.35718 - 35728 ACS Nano 18 52 35718 35728 N scie scopus 001379347600001 2-s2.0-85212338966 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article LITHIUM METAL LITHIOPHILIC SITES CURRENT-DENSITY PULSE ANODE NUCLEATION DEPOSITION lithium lithium metal batteries anode-freebatteries 3D current collector lithiophilic catalyst magnesium