A novel in-situ growth ZIF-67 on biological porous carbon encapsulated phase change composites with electromagnetic interference shielding and multifunctional energy conversion

作者：Liu, Shuang; Quan, Bingqing; Sheng, Mengjie; Yang, Yabi; Hu, Xinpeng; Zhu, Chuanbiao; Lu, Xiang^*; Qu, Jinping^*

来源：Nano Energy, 2023, 114: 108669.

DOI：10.1016/j.nanoen.2023.108669

• ZIF-67
• Paraffin wax
• Biological porous carbon
• Phase change composites
• Electromagnetic wave shielding

With the current intricate application environment, extended versatility is critical to the future development of phase change materials (PCMs). Herein, we prepared a series of phase change composites (PCCs) with excellent electromagnetic interference shielding effectiveness (EMI SE) and versatile thermal management. Specifically, the hybridized multi-stage porous biological carbon base with magnetic and electrical conductivity was prepared as the substrate material for encapsulating paraffin wax (PW) by carbonizing in situ growth ZIF-67 on waste agricultural. The synergy between the functions of the porous biological carbon and PW makes the PCCs have high-performance EMI SE (44.81 dB) and high enthalpy value (175.88-229.52 J/g) at the identical time. In which CC-ZIF-3 @PW has outstanding effect in storing and releasing thermal energy for photo-thermal, magnetic-thermal and electric-thermal conversion. Unsurprisingly, the PCCs breaks innovative ground for energy storage and conversion materials with potential value in various fields such as electronic protection, deicing and thermal energy utilization.

• 单位
  华中科技大学