Kim, Seung-Hyeok Park, Jae-Ho Lee, Ji Eun Kristanto, Imanuel Park, Jae Yeol Suh, Hoyoung Kim, Ji-Young Lee, Kwon-Hyung Jeong, Jiwon Chang, Wonyoung Kwak, Sang Kyu Chung, Kyung Yoon Lee, Sang-Young 2024-03-21T09:00:09Z 2024-03-21T09:00:09Z 2024-03-21 2024-05 1614-6832 https://pubs.kist.re.kr/handle/201004/149512 Despite the enormous efforts to control the growth behavior of Li, achieving a dendrite-free Li deposition and high-energy-density have remained an inevitable challenge of Li metal batteries. Here, the conformal deposition of Li metal is reported on electroactive organic materials to achieve a high-energy-density and electrochemical longevity. To this end, Li2C8H4O4 (Li2TP), which can act as both the electrode material (providing the redox capacity) and Li host (inducing the dendrite-free Li deposition), is used as the model electroactive organic material. The Li2TP host exhibits reversible sequential lithiation/delithiation and Li deposition/stripping reactions. Consequently, a Li-free full cell constructed by the Li2TP host (without pre-charging) and a LiFePO4 cathode delivered a high areal capacity (approximate to 3.8 mAh cm-2), exceptional rate performance (<= 12 mA cm-2), and superior cyclability (80% capacity retention after 100 cycles). This electroactive organic material-based Li host strategy can provide a new perspective for the development of practical Li metal batteries. A conformal and dendrite-free deposition of lithium metal on electroactive organic materials (Li2C8H4O4) is demonstrated, which can achieve both redox capacity and lithium electrodeposition stabilization. This work provides a new design concept for electroactive Li hosts that enable practical Li metal batteries with high energy density and electrochemical longevity. image English Wiley-VCH Verlag Conformal Deposition of Lithium Metal on Electroactive Organic Materials Article 10.1002/aenm.202304337 1 Advanced Energy Materials, v.14, no.18 Advanced Energy Materials 14 18 N scie scopus 001181555500001 2-s2.0-85187151040 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Energy & Fuels Materials Science Physics Article CURRENT COLLECTOR ANODE CARBON SUBSTRATE PATHWAYS BATTERY FIBER conformal deposition of lithium metal electroactive lithium host electroactive organic materials lithium metal anodes lithium metal full cells