In this work, we developed a novel fabrication strategy to construct elastic carbon framework electrocatalysts using nanocellulose fibers (CNFs) and carbon nanotubes (CNTs) by directional freeze casting and interfacial assembly to prepare self-supporting flexible air electrodes. The obtained carbon framework has a directional porous structure, and N and S heteroatoms are uniformly doped in the carbon skeleton, showing excellent mechanical flexibility and excellent ORR performance. Moreover, we assembled an all-solid-state flexible zinc-air battery (FZAB), offering a smaller charge/discharge voltage gap and excellent cycling stability. These results demonstrate the potential of flexible carbon frameworks for the utilization and modification of flexible energy storage devices.
- Huaipeng Pang
- Meng Wang
- Biao Kong
