Recent advances in triboelectric nanogenerator (TENG) by suitable micro/nanostructure fabrication and surface chemical modification have greatly optimized surface charge density and output performance, but poor wear resistance of micro/nanostructure and surface modification composition is still the bottleneck for practical applications. Here, an oleic-acid-enhanced triboelectric nanogenerator (OA-TENG) with high output performance and wear resistance is reported, in which the OA was used to improve the electronegativity of polystyrene (PS) friction pair and also used as lubrication additives to reduce friction coefficient and wear volume. The maximum output power of the PS based TENG doping with oleic acid reached 470.5 μW, which is 79 times larger than the device without doping oleic acid. More importantly, the tribological tests show that the addition of 4.8 wt % OA reduced the wear volume by about 90% comparing to pure PS, which is a key role to ensure the long-term work of TENG. The wear-resistant friction electrode material can be prepared in a large area and used for energy collection to design temperature self-powered sensors or cathodic protection devices. This protocol shows new perspectives for TENG researches in terms of high performance, wear resistance and robustness for green-energy harvesting and applications.

通过适当的微/纳米结构制造和表面化学改性，摩擦电纳米发电机（TENG）的最新进展极大地优化了表面电荷密度和输出性能，但是微/纳米结构和表面改性成分的耐磨性差仍然是实际应用的瓶颈。在这里，报道了一种具有高输出性能和耐磨性的油酸增强型摩擦电纳米发电机（OA-TENG），其中OA被用来提高聚苯乙烯（PS）摩擦副的电负性，并且还被用作润滑添加剂以减少摩擦系数和磨损量。PS型TENG掺杂油酸的最大输出功率达到470.5μW，这是不掺杂油酸的器件的79倍。更重要的是，摩擦学测试表明，与纯PS相比，添加4.8 wt％OA可使磨损量减少约90％，这是确保TENG长期工作的关键作用。耐磨摩擦电极材料可以大面积制备，并用于能量收集，以设计温度自供电传感器或阴极保护装置。该协议为TENG研究在绿色能源收集和应用的高性能，耐磨性和鲁棒性方面显示了新的观点。