To develop a clean and sustainable carbon anode material derived from biomass with desirable properties for lithium-ion batteries (LIBs), bio-nitrogen (N)-doped composite carbon nanofibrous mats (CNFMs) were made using natural cellulose (CE) and chitosan (CS) by means of two different electrospinning ways (single-nozzle and coaxial-nozzle) coupled with pyrolysis. The conventional CNFMs that had a CE/CS ratio of 5:5 showed the best electrochemical performance, corresponding to a high specific capacity of 327 mAh g⁻¹ at 100 mA g⁻¹, good rate performance with specific capacity of 399 mAh g⁻¹ at 30 mA g⁻¹ and 210 mA g⁻¹ at 1000 mA g⁻¹, as well as excellent cycling stability after 300 cycles. The core–shell CNFMs with a thick outer layer of CS and large average fiber diameter (316 nm) at the same CE/CS ratio had higher pyridinic-N and pyrrolic-N contents but a lower degree of graphitization and BET surface area compared to the conventional CNFMs. It was concluded that the bio-N in CS was more uniformly doped into the CNFMs by the single-nozzle electrospinning way than by the coaxial one, and thus more effectively promoted a comprehensive electrochemical performance.

为了开发一种清洁，可持续的碳生物阳极材料，该材料具有理想的锂离子电池（LIB）性能，使用天然纤维素（CE）和脱乙酰壳多糖制备了掺有生物氮（N）的复合碳纳米纤维垫（CNFM）（ CS）是通过两种不同的静电纺丝方式（单喷嘴和同轴喷嘴）与热解结合而成的。那有一个CE的5 / CS比常规CNFMs：5显示出最佳的电化学性能，对应于327毫安g的高比容量^-1以100mA克^-1，好的率性能的399毫安克比容量^{- 1}在30mA克^-1和210毫安克^-1以1000mA克^-1以及300次循环后的出色循环稳定性。在相同的CE / CS比下，具有厚CS的外层和较大的平均纤维直径（316 nm）的核-壳CNFM具有较高的吡啶N和吡咯N含量，但与石墨化度和BET表面积相比较低传统的CNFM。结论是，单喷嘴电纺丝法比同轴法更均匀地将CS中的生物氮掺杂到CNFM中，从而更有效地促进了电化学性能的提高。