Kang, Dong Hyuk Park, Minhyuck Lee, Jeonghun Kim, Chan Yeol Park, Jimin Lee, Youn-Ki Hyun, Jong Chan Ha, Son Kwak, Jin Hwan Yoon, Juhee Kim, Hyemin Kim, Hyun Soo Kim, Do Hyun Kim, Sangmin Park, Ji Yong Jang, Robin Yang, Seung Jae Lim, Hee-Dae Cho, Se Youn Jin, Hyoung-Joon Lee, Seungjin Hwang, Yunil Yun, Young Soo 2024-01-12T06:31:04Z 2024-01-12T06:31:04Z 2023-12-19 2024-02 2524-7921 https://pubs.kist.re.kr/handle/201004/79686 Thick cathodes can overcome the low capacity issues, which mostly hamper the performance of the conventional active cathode materials, used in rechargeable Li batteries. However, the typical slurry-based method induces cracking and flaking during the fabrication of thick electrodes. In addition, a significant increase in the charge-transfer resistance and local current overload results in poor rate capabilities and cycling stabilities, thereby limiting electrode thickening. In this study, a synergistic dual-network combination strategy based on a conductive nanofibrillar network (CNN) and a nano-bridging amorphous polyhydroxyalkanoate (aPHA) binder is used to demonstrate the feasibility of constructing a high-performance thick cathode. The CNN and aPHA dual network facilitates the fabrication of a thick cathode (≥？250 μm thickness and？≥？90 wt% active cathode material) by a mass-producible slurry method. The thick cathode exhibited a high rate capability and excellent cycling stability. In addition, the thick cathode and thin Li metal anode pair (Li//t-NCM) exhibited an optimal energy performance, affording high-performance Li metal batteries with a high areal energy of？~？25.3 mW h cm？2, a high volumetric power density of？~？1720 W L？1, and an outstanding specific energy of？~？470 W h kg？1 at only 6 mA h cm？2. English Springer Nature High-Performance Thick Cathode Based on Polyhydroxyalkanoate Binder for Li Metal Batteries Article 10.1007/s42765-023-00347-8 1 Advanced Fiber Materials, v.6, no.1, pp.214 - 228 Advanced Fiber Materials 6 1 214 228 N scie scopus 001126198600001 Materials Science, Multidisciplinary Materials Science, Textiles Materials Science Article NI-RICH ELECTRODE ARCHITECTURES ENERGY-DENSITY Thick cathode Polyhydroxyalkanoate binder Nano-bridging Conductive nano-fibrillar network Lithium metal battery