Herein, we report a mutually exclusive ytterbium and nitrogen co-doping strategy for mesoporous titania-carbon (YbNTiO₂@C) specially designed for the positive electrode materials towards self-cleaning functionality and high-power triboelectric nanogenerators. Nano-porous structures of YbNTiO₂@C having higher surface energy not only provide the enlarge platform for atom-to-atom contacts, but also increase the charge density of the tribo-layer by accelerating the effective electronic quantum transition effects in-between the opposite electrodes in comparison with pristine TiO₂. The formation of crystal defects due to doping of ytterbium on the regular lattice structure of TiO₂ along with unique substitutional and interstitial nitrogen-doping boosts the overall surface polarity and increases the charge storage and discharge capability when exposed as an interactive electrode surface in dry-type capacitive triboelectric nanogenerators (TENGs). Therefore, YbNTiO₂@C coated tribo-positive electrode not only shows considerable enhancement of TENG performances, but also provides significant improvement in self-cleaning function under sunlight. The YbNTiO₂@C layer shows remarkable output triboelectricity up to 3 folds and self-cleaning decomposition of methylene blue up to 96.40% within a minute. Notable improvements in both self-cleaning ability and high-performance power generation enable the realization of an ideal smart roof for harvesting green energy from rain and wind in cloud weather.

在此，我们报告了一种互斥的镱和氮共掺杂策略，用于专为正极材料设计的介孔二氧化钛-碳（YbNTiO ₂ @C），以实现自清洁功能和高功率摩擦纳米发电机。具有更高表面能的 YbNTiO ₂ @C纳米多孔结构不仅为原子间接触提供了扩大平台，而且还通过加速之间的有效电子量子跃迁效应来增加摩擦层的电荷密度。与原始 TiO ₂相比，相反的电极。由于在TiO ₂的规则晶格结构上掺杂镱而形成晶体缺陷当作为干式电容摩擦纳米发电机（TENG）中的交互式电极表面暴露时，独特的置换和间隙氮掺杂增强了整体表面极性并增加了电荷存储和放电能力。因此，YbNTiO ₂ @C涂层摩擦正极不仅显着提高了TENG性能，而且在阳光下的自清洁功能也有显着改善。YbNTiO ₂@C 层显示出高达 3 倍的显着输出摩擦电和在一分钟内高达 96.40% 的亚甲基蓝自清洁分解。自清洁能力和高性能发电的显着改进使实现理想的智能屋顶能够在云天气中从雨和风中收集绿色能源。