A novel nano-scale cellulose with high crystallinity and extreme low graphitization temperature

The structures of carbonized products from cellulose are closely correlated with the raw material. In the present work, we proposed a self-reassembly strategy and successfully prepared a novel nano-scale cellulose material which exhibited a crumpled thin layer structure and high crystallinity (> 95%). The nano-cellulose undergoes partial graphitization-related transformation without any catalyst at the temperature lower than 300 ℃, which was extremely lower than the graphite transition temperature for conventional cellulose (> 1800 ℃). On this basis, we prepared a novel graphene oxide with high capacitance capability and ultra-long cycling stability. The present findings not only expand our understanding on the microstructure-property correlations of polymer materials but also are expected to achieve wider applications of nano-cellulose to energy-related areas or intelligent wearable devices. • Dual-dissolution strategy enables precise molecular alignment in nanocrystalline cellulose. • Catalyst-free low-temperature graphitization achieved, eliminating energy-intensive carbonization processes. • Oxygen-graphene architectures achieve high-capacitance, ultra-stable electrochemical performance.