Lithium-carbon dioxide (Li-CO₂) batteries, especially solid-state Li-CO₂ batteries, have attracted much attention due to the high energy density and potential application of carbon neutrality. However, the extremely sluggish kinetics of CO₂ evolution reaction in the batteries result in a notorious high-charge-potential over 4.0 V, thus impeding the development of Li-CO₂ batteries. Here, by in-situ constructing a plasmonic Ru/Li₂CO₃-based heterostructure, we report an ultra-low charge overpotential and long cycle life solid-state Li-CO₂ battery via the energetic hot carries produced by nonradiative decay of localized surface plasmons where solar energy can be efficintly harvested (over 90% absorption efficiency from 200 nm to 1000 nm), concentrated and converted on the plasmonic Ru catalysts. Experimental results show that the plasmonic photothermal catalysis using Ru catalysts can catalyze C-O bond cleavage and construct a plasmonic Ru/Li₂CO₃-based heterostructure in the battery on discharge, and effectively accelerate the CO₂ envolution reaction via injecting the hot carriers generated from the plasmonic Ru catalysts into the discharged Li₂CO₃-based products on charge. As a result, by using a chemically stable and high Li-ion conductive MSI layer, the battery shows a record low charge potential (2.99 V) even after a long-term cycling (over 450 cycles) operating at 500 mA g⁻¹ at 500 mAh g⁻¹. This battery technology paves the way for developing next-generation high-specific-energy Li-CO₂ batteries with carbon neutrality.

锂-二氧化碳（Li-CO ₂）电池，尤其是固态Li-CO ₂电池，由于其高能量密度和碳中和的潜在应用而备受关注。然而，电池中CO 2 析出反应极其缓慢的动力学_导致了臭名昭著的超过4.0 V的高充电​​电位，从而阻碍了Li-CO ₂电池的发展。在这里，通过原位构建等离子体Ru/Li ₂ CO ₃基异质结构，我们报告了超低电荷过电位和长循环寿命的固态Li-CO ₂通过局部表面等离子体的非辐射衰变产生的高能热载流子，可以有效地收集太阳能（从 200 nm 到 1000 nm 的吸收效率超过 90%），在等离子体 Ru 催化剂上浓缩和转化。实验结果表明，使用Ru催化剂的等离子体光热催化可以催化CO键断裂并在放电时在电池中构建等离子体Ru/Li ₂ CO ₃基异质结构，并通过注入产生的热载流子有效地加速CO ₂环化反应。等离激元Ru催化剂进入放电的Li ₂ CO ₃-基于收费的产品。^{因此，通过使用化学稳定且高锂离子导电的 MSI 层，即使在以 500 mA g -1}运行的长期循环（超过 450 次循环）后，电池仍显示出创纪录的低充电电位（2.99 V）。 500 mAh g ^-1。该电池技术为开发具有碳中和功能的下一代高比能量 Li-CO _{2电池铺平了道路。}