{Reference Type}: Journal Article {Title}: Supersaturated bridge-sulfur and vanadium co-doped MoS2 nanosheet arrays with enhanced sodium storage capability {Author}: Dong, Yuru; Zhu, Zhengju; Hu, Yanjie; He, Guanjie; Sun, Yue; Cheng, Qilin; Parkin, Ivan P.; Hao, Jiang {Journal}: Nano Research {ISBN/ISSN}: 1998-0124 {Year}: 2021 {Volume}: 14 {Issue}: 1 {Pages}: 74-80 {DOI}: 10.1007/s12274-020-3044-x {Keywords}: MoS2 {Keywords}: sodium-ion battery {Keywords}: high specific capacity {Keywords}: cycle life {Keywords}: bridge-sulfur {Abstract}: The low specific capacity and sluggish electrochemical reaction kinetics greatly block the development of sodium-ion batteries (SIBs). New high-performance electrode materials will enhance development and are urgently required for SIBs. Herein, we report the preparation of supersaturated bridge-sulfur and vanadium co-doped MoS2 nanosheet arrays on carbon cloth (denoted as V-MoS2+x/CC). The bridge-sulfur in MoS2 has been created as a new active site for greater Na+ storage. The vanadium doping increases the density of carriers and facilitates accelerated electron transfer. The synergistic dual-doping effects endow the V-MoS2+x/CC anodes with high sodium storage performance. The optimized V-MoS2.49/CC gives superhigh capacities of 370 and 214 mAh·g-1 at 0.1 and 10 A·g-1 within 0.4-3.0 V, respectively. After cycling 3,000 times at 2 A·g-1, almost 83% of the reversible capacity is maintained. The findings indicate that the electrochemical performances of metal sulfides can be further improved by edge-engineering and lattice-doping co-modification concept. {URL}: https://www.sciopen.com/article/10.1007/s12274-020-3044-x {Language}: en