钠离子电池筛分型碳：缘起与进展

张俊, 李琦, 陶莹, 杨全红

Sieving carbons for sodium-ion batteries： Origin and progress

Jun ZHANG, Qi LI, Ying TAO, Quanhong YANG

图6 筛分型碳的理性设计原则 (a) 硬碳负极的孔径、钠团簇峰位移和热解温度间的关系[27]；(b) 筛分型碳负极的准原位固体核磁(实线：循环10圈后，再放电到0.005 V；虚线：未经循环，直接放电到0.005 V)[26]；(c) 硬碳负极平台容量、真密度和乙醇含量间的关系；(d) 平台容量与氮气吸附和小角X射线散射测得的比表面积间的关系[26]

Fig. 6 Rational design principles for sieving carbon anodes. (a) Relationship between the pore diameter, quasi-metallic Na peak shift and sample pyrolysis temperature[27]; (b) Ex-situ23Na 55 kHz ssNMR spectra of SCs at 0.005 V for the 10th discharge at 50 mA/g (solid curves). The dashed curves are the corresponding ssNMR spectra of SCs at 0.005 V for the first discharge[26]; (c) Relationship among the plateau capacity (0.1-0 V), true density, and EtOH content; (d) Charge capacity from the low-potential plateau versus SSA obtained by SAXS and N2 adsorption for the SC anodes[26]