Luo Xinyuan, Tan Hengfeng, Ma Ting, Wang Hui, Lv Miao, Yu Zhou, Fu Caiping, Chang Xinghua, Jin Shengming
Hunan Key Lab of Mineral Materials and Application, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, People's Republic of China.
School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China.
Nanotechnology. 2021 May 10;32(31). doi: 10.1088/1361-6528/abf778.
Sb holds the promise of being a high performance anode for sodium ion batteries(SIBs), while effective preparation of decent antimony(Sb) based anode materials for sodium storage is still under exploration. Herein, we propose a simple approach to achieve a high performance anode, using polyaniline as the carbon source and SbClas the metal source. Synergetic polymerization and hydrolysis reactions combined with subsequent thermal reduction endow Sb/C-PANI electrode possessing ultrafine Sb nanoparticles symmetrically distributed in the nitrogen(N) doped porous carbon matrix. The Sb/C-PANI electrode exhibits excellent sodium storage performance, featured for a high reversible capacity of 469.5 mAh gafter 100 cycles at 100 mA gand 336.5 mAh gafter 300 cycles under 500 mA g. Such impressive performance will advance the development of Sb based anode materials for sodium storage. The present approach provides a compatible strategy for preparation of anode materials with high reversible capacity and long lifespan.
锑有望成为钠离子电池（SIBs）的高性能负极，而有效制备用于储钠的优质锑基负极材料仍在探索之中。在此，我们提出一种简单的方法来制备高性能负极，以聚苯胺作为碳源，氯化锑作为金属源。协同的聚合和水解反应以及随后的热还原，使Sb/C-PANI电极拥有对称分布在氮掺杂多孔碳基体中的超细锑纳米颗粒。Sb/C-PANI电极展现出优异的储钠性能，在100 mA g下循环100次后具有469.5 mAh g的高可逆容量，在500 mA g下循环300次后具有336.5 mAh g的可逆容量。如此令人印象深刻的性能将推动用于储钠的锑基负极材料的发展。目前的方法为制备具有高可逆容量和长寿命的负极材料提供了一种兼容的策略。
