An ultra-fine few-layer MoS2 embedded on N, P co-doped bio-carbon for high performance of sodium-ion batteries
A sustainable and easily method for the fabrication of ultra-fine few-layer MoS2 embedded on N, P co-doped bio-carbon is developed by using natural chlorella as adsorbent and reactor. The MoS2-N/P-C composite is easily synthesized by the biosorption of chlorella and a subsequent calcination process. This bio-carbon made from chlorella can act as a nanoreactor to prevent the MoS2 nanoparticles from reuniting during the calcination process. Besides, the N, P co-doped bio-carbon enhance the conductivity and surface wettability of this composite and accomdate the large radius of Na+. When used as an anode for sodium ion batteries, it shows significant superiority high-rate and long cycling performance, evidenced by the the capacity of 175 mAh g-1 after 2000 cycles at 5 A g-1.