Polysulfide shuttle is a major challenge to be addressed while designing lithium-sulfur batteries (LSBs) as it stagnates the overall performance of the system. The exploration of better material combinations is imperative to deal with the issue. With this objective, a grain-like lithium cobalt vanadate embedded graphene nanoplatelets (GLCVO) is designed as a potent sulfur host in Li-S batteries. The composite cathode with preferable active sites is found to be highly efficacious in capturing the polysulfides through strong chemical interaction as well as propelling the polysulfide conversion reaction kinetics. Furthermore, the graphene nanoplatelets render an interconnected pathway for electronic conduction. As a direct consequence, the GSLCVO cell evinces an initial discharge capacity of 982 mAh g⁻¹ at 0.5 C rate and maintains excellent cyclability with a low attenuation rate of 0.031% over 800 cycles. Besides, the cell exhibits better static stability and attenuates the self-discharge behavior to a great extent. The detailed structural and electrochemical evaluation cooperatively reveals its excellent electrochemical properties which makes it an attractive cathode material for LSBs.

多硫化物穿梭是设计锂硫电池 (LSB) 时需要解决的主要挑战，因为它会阻碍系统的整体性能。探索更好的材料组合对于解决这个问题势在必行。为了这个目标，颗粒状钴酸锂嵌入石墨烯纳米片 (GLCVO) 被设计为锂硫电池中的有效硫主体。发现具有优选活性位点的复合阴极在通过强化学相互作用捕获多硫化物以及推动多硫化物转化反应动力学方面非常有效。此外，石墨烯纳米片为电子传导提供了互连的通路。作为直接结果，GSLCVO 电池表现出 982 mAh g ^-1的初始放电容量在 0.5 C 倍率下保持优异的循环性能，在 800 次循环中具有 0.031% 的低衰减率。此外，电池表现出更好的静态稳定性并在很大程度上减弱了自放电行为。详细的结构和电化学评估共同揭示了其优异的电化学性能，这使其成为 LSB 的有吸引力的正极材料。