Co nanoparticles-embedded hierarchical porous carbon network as high-performance cathode for lithium-sulfur batteries
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Abstract
锂硫电池理论能量密度大、成本低廉, 被认为是最有前景的电化学储能系统之一. 然而, 硫和放电产物硫化锂的低电导率, 充放电时的体积膨胀, 以及多硫化锂的穿梭效应严重影响了其可逆容量和循环性能. 本文采用了一种简单的模板法制备了Co纳米颗粒嵌入的分级多孔碳网络(Co-NHPC). 通过合理结构设计, 以及原位生成的Co纳米颗粒的嵌入, Co-NHPC表现出很强的对LiPSs的吸附和催化转化能力. 结果表明, Co-NHPC在0.2 C时的初始可逆容量为1478.6 mA h g−1, 经过500次循环后, 在1和5 C下仍可分别保留674.9和451.6 mA h g−1的可逆容量.
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OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced battery technologies research
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References (39)
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