Document Type
Article
Abstract
Dual-ion batteries (DIBs), which usually using carbon-based materials as electrodes, showing advantages in high operating voltage, potential low cost, and environmental friendliness. Different from conventional “rocking chair” of secondary batteries, DIBs performed a unique working mechanism, which employ both cation and anion take part in capacity contribution at anode and cathode, respectively, during electrochemical reactions. Graphite has been identified a suitable cathode material for anion intercalation at high voltage (>4.8 V) with fast reaction kinetics. However, the development of DIBs is being hindered by dynamic mismatch between cathode and anode due to sluggish Li+ diffusion at high rate. Herein, we prepared phyllostachys edulis derived carbon (PEC) through micro structure regulation strategy, which effectively tailored the rich short-range ordered graphite microdomains and disordered amorphous regions, as well as a unique nano-pore hierarchical structure. The pore size distribution of nano-pores is concentrated in 0.5-5 nm, providing suitable channels for rapid Li+ transportation, achieving a high capacity of 436 mAh·g-1 at 300 mA·g-1 and excellent rate performance (maintaining a high capacity of 231 mAh·g-1 at 3 A·g-1). The assembled dual-carbon PEC-500||graphite full battery delivered 114 mAh·g-1 at 10 C with 96% capacity retention after 3000 cycles and outstanding rate capability, providing 74 mAh·g-1 at 50 C.
Graphical Abstract
Keywords
Dual ion battery, Biomass hard carbon, Structural regulation, High operating voltage, High rate
DOI
10.61558/2993-074X.3569
Online Date
6-16-2025
Recommended Citation
Rui Zhou, Rui Liu, Yun-Nuo Li, Si-Jie Jiang, Tian-Tian Jing, Yan-Song Xu, Fei-Fei Cao. Structure Regulation Engineering for Biomass-derived Carbon Anodes Enabling High-rate Dual-ion Batteries[J]. Journal of Electrochemistry, doi: 10.61558/2993-074X.3569.
