Wood-Derived Carbon with Selectively Introduced C═O Groups toward Stable and High Capacity Anodes for Sodium Storage

• DOI: 10.1021/acsami.0c04469
• Publication Date: 2020-05-01T21:54:45Z
• Authors: Lan Chen; Lulu Bai; Jingjie Yeo; Tong Wei; Wenshuai Chen; Zhuangjun Fan
• Keywords: Carbon fibers

Biomass-derived carbon is a promising sustainable anode material for sodium-ion batteries (SIBs). Although the electrochemical performance can be improved by introducing functional groups, selective introduction of single groups into biomass remains difficult. Here, we overcome this challenge developing wood-derived with selectively introduced C═O combining tetramethoxysilane (TMOS) wood cellulose pulps. The integration TMOS introduces abundant during polycondensation and pyrolysis process. play dominant role in surface-controlled processes, leads to improvements pseudo-capacity fast electrode process kinetics. Besides, generates oxygen active sites that promote Na+ adsorption creates sufficiently large graphene interlayer distance. as-obtained shows high capacity 330 mAh g-1 at 40 mA excellent cycling stability. Moreover, our strategy simple uses pulps as precursors. It therefore enables low-cost large-scale synthesis materials SIBs.