Tuesday, February 21, 2023
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An interlayer spacing design strategy for environment friendly sodium ion storage in N-doped MoS2


MoS2 in a graphene-like construction that possesses a big interlayer spacing is a promising anode materials for sodium ion batteries (SIBs). Nonetheless, its poor biking stability and unhealthy fee efficiency restrict its broad utility. On this work, we synthesized an N-doped rGO/MoS2 (ISE, interlayer spacing enlarged) composite primarily based on an progressive technique to function an anode materials for SIBs. By inserting NH4+ into the interlayer of MoS2, the interlayer spacing of MoS2 was efficiently expanded to 0.98 nm. Additional use of N plasma remedy achieved the doping of N component. The outcomes present that N-rGO/MoS2(ISE) reveals a excessive particular capability of 542 mA h g−1 after 300 cycles at 200 mA g−1. It’s value mentioning that the capability retention fee reaches an ultra-large proportion of 97.13%, and the typical decline proportion per cycle is near 0.01%. Furthermore, it additionally presents a superb fee efficiency (477, 432, 377, 334 mA h g−1 at 200, 500, 1000, 2000 m A g−1 respectively). This work reveals a singular strategy to fabricating promising anode supplies and the electrochemical response mechanism for SIBs.

Graphical abstract: An interlayer spacing design approach for efficient sodium ion storage in N-doped MoS2



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