Abstract Conductive titanium carbide (TiC) nanoparticles implanted into puffed rice carbon (PRC), forming a highly porous TiC/PRC host, is reported. Typically, PRC possesses cross-linked nano/microsheets with three-dimensional (3D) structure and large surface area, prepared by a puffing strategy. Moreover, TiC is further introduced into the carbon matrix (TiC/PRC) with excellent compatibility. TiC plays a dual role for not only enhancement of conductivity but also adsorption of soluble lithium polysulfides. When employed as a host of sulfur in LSBs, the designed TiC/PRC-S cathode exhibits improved rate capability, high reversible capacity of 1223.0 mA h g-1 at 0.1 C, and long cycling life of 884.5 mA h g-1 after 200 cycles. The excellent electrochemical performance is ascribed to the synergetic work of porous PRC architecture and polar conductive TiC with strong physisorption and chemisorption of soluble polysulfide simultaneously.

中文翻译：

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膨化碳/碳化钛基体改善硫正极电化学性能

摘要 据报道，将导电碳化钛 (TiC) 纳米粒子植入膨化大米碳 (PRC)，形成高度多孔的 TiC/PRC 主体。通常，PRC 具有通过膨化策略制备的具有三维 (3D) 结构和大表面积的交联纳米/微片。此外，进一步将 TiC 引入碳基体（TiC/PRC）中，具有优异的相容性。TiC 不仅可以提高电导率，还可以吸附可溶性多硫化锂。当用作 LSB 中的硫主体时，所设计的 TiC/PRC-S 正极表现出更高的倍率性能、0.1 C 下 1223.0 mAh g-1 的高可逆容量和 200 年后 884.5 mAh g-1 的长循环寿命循环。