Hollow Bio-derived Polymer Nanospheres with Ordered Mesopores for Sodium-Ion Battery
Yan Ai, Yuxiu You, Facai Wei, Xiaolin Jiang, Zhuolei Han, Jing Cui, Hao Luo, Yucen Li, Zhixin Xu, Shunqi Xu, Jun Yang, Qinye Bao, Chengbin Jing, Jianwei Fu, Jiangong Cheng, Shaohua Liu
Abstract
Abstract Bio-inspired hierarchical self-assembly provides elegant and powerful bottom-up strategies for the creation of complex materials. However, the current self-assembly approaches for natural bio-compounds often result in materials with limited diversity and complexity in architecture as well as microstructure. Here, we develop a novel coordination polymerization-driven hierarchical assembly of micelle strategy, using phytic acid-based natural compounds as an example, for the spatially controlled fabrication of metal coordination bio-derived polymers. The resultant ferric phytate polymer nanospheres feature hollow architecture, ordered meso-channels of ~ 12 nm, high surface area of 401 m 2 g −1 , and large pore volume of 0.53 cm 3 g −1 . As an advanced anode material, this bio-derivative polymer delivers a remarkable reversible capacity of 540 mAh g −1 at 50 mA g −1 , good rate capability, and cycling stability for sodium-ion batteries. This study holds great potential of the design of new complex bio-materials with supramolecular chemistry.