Lithium-sulfur (Li-S) and Lithium-selenium (Li-Se) batteries are considered as promising candidates for next-generation battery technologies, as they have high energy density and low cost. However, due to the use of a solid Li-metal anode and a liquid organic electrolyte, the current Li-S and Li-Se batteries face several issues in terms of Coulombic efficiency and cycling stability, which seriously impeded their development. Here, we report solid-electrolyte-based liquid Li-S and Li-Se (SELL-S and SELL-Se in short) batteries. The batteries use a Li_6.4La₃Zr_1.4Ta_0.6O₁₂ (LLZTO) ceramic tube as electrolyte and work at temperatures higher than the melting point of Li; thus, polysulfide or polyselenide shuttle effects and Li dendrite growth are effectively prevented, and high energy density, together with high stability, fast charge/discharge capability, high Coulombic efficiency, and high energy efficiency, can be achieved. The SELL-S and SELL-Se batteries provide broader platforms for constructing high-energy, high-power, long-lifetime, and low-cost energy storage.

锂硫（Li-S）和锂硒（Li-Se）电池具有高能量密度和低成本，因此被认为是下一代电池技术的有前途的候选者。然而，由于使用固体锂金属阳极和液体有机电解质，当前的Li-S和Li-Se电池在库仑效率和循环稳定性方面面临若干问题，这严重阻碍了它们的发展。在这里，我们报告了基于固体电解质的液态Li-S和Li-Se（简称为SELL-S和SELL-Se）电池。电池使用的是Li _6.4 La ₃ Zr _1.4 Ta _0.6 O ₁₂（LLZTO）陶瓷管作为电解质，在高于Li熔点的温度下工作；因此，有效地防止了多硫化物或多硒化物的穿梭效应和锂枝晶的生长，并且可以实现高能量密度，高稳定性，快速充电/放电能力，高库仑效率和高能量效率。SELL-S和SELL-Se电池为构建高能量，高功率，长寿命和低成本的能量存储提供了更广阔的平台。