As intelligent sensors for marine applications rapidly advance,there is a growing emphasis on developing efficient,low-cost,and sustainable power sources to enhance their performance.With the continuous development of...As intelligent sensors for marine applications rapidly advance,there is a growing emphasis on developing efficient,low-cost,and sustainable power sources to enhance their performance.With the continuous development of triboelectric nanogenerators(TENGs),known for their simple structure and versatile operational modes,these devices exhibit promising technological potential and have garnered extensive attention from a broad spectrum of researchers.The single-electrode mode of TENGs presents an effective means to harness eco-friendly energy sourced from flowing water.In this study,the factors affecting the output performance were investigated using different structures of single-electrode solid-liquid TENGs placed in a circulating water tank.In addition,the solid‒liquid contact process was numerically simulated using the COMSOL Multiphysics software,and significant potential energy changes were obtained for the solid‒liquid contact and liquid flow processes.Finally,the energy generated is collected and converted to power several light-emitting diodes,demonstrating that solid‒liquid TENGs can generate effective electrical power in a flowing water environment.Through several experimental investigations,we finally determined that the flow rate of the liquid,the thickness of the friction electrode material,and the contact area have the most significant effect on the output efficiency of TENGs in the form of flowing water,which provides a guide for improving their performance in the future.展开更多
Polytetrafluoroethylene films are treated by room temperature helium atmospheric pressure plasma plumes, which are generated with a home-made single liquid electrode plasma device. After plasma treatment, the water co...Polytetrafluoroethylene films are treated by room temperature helium atmospheric pressure plasma plumes, which are generated with a home-made single liquid electrode plasma device. After plasma treatment, the water contact angle of polytetrafiuoroethylene fihn drops from 114° to 46° and the surface free energy increases from 22.0 mJ/m2 to 59.1 mJ/m2. The optical emission spectrum indicates that there are reactive species such as O2＋, O and He in the plasma plume. After plasma treatment, a highly crosslinking structure is formed on the fihn surface and the oxygen element is incorporated into the film surface in the forms of C O-C-, -C=O, and O C=O groups. Over a period of 10 days, the contact angle of the treated film is recovered by only about 10°, which indicates that the plasma surface modification is stable with time.展开更多
基金the support from Natural Science Foundation of Heilongjiang Province(No.YQ2022A004)National Natural Science Foundation of China(No.12372268,No.12332014).
文摘As intelligent sensors for marine applications rapidly advance,there is a growing emphasis on developing efficient,low-cost,and sustainable power sources to enhance their performance.With the continuous development of triboelectric nanogenerators(TENGs),known for their simple structure and versatile operational modes,these devices exhibit promising technological potential and have garnered extensive attention from a broad spectrum of researchers.The single-electrode mode of TENGs presents an effective means to harness eco-friendly energy sourced from flowing water.In this study,the factors affecting the output performance were investigated using different structures of single-electrode solid-liquid TENGs placed in a circulating water tank.In addition,the solid‒liquid contact process was numerically simulated using the COMSOL Multiphysics software,and significant potential energy changes were obtained for the solid‒liquid contact and liquid flow processes.Finally,the energy generated is collected and converted to power several light-emitting diodes,demonstrating that solid‒liquid TENGs can generate effective electrical power in a flowing water environment.Through several experimental investigations,we finally determined that the flow rate of the liquid,the thickness of the friction electrode material,and the contact area have the most significant effect on the output efficiency of TENGs in the form of flowing water,which provides a guide for improving their performance in the future.
基金Project supported by the State Key Program of National Natural Science Foundation of China (Grant No. 10735090)the Young Scientist Fund of the National Natural Science Foundation of China (Grant No. 11005151)
文摘Polytetrafluoroethylene films are treated by room temperature helium atmospheric pressure plasma plumes, which are generated with a home-made single liquid electrode plasma device. After plasma treatment, the water contact angle of polytetrafiuoroethylene fihn drops from 114° to 46° and the surface free energy increases from 22.0 mJ/m2 to 59.1 mJ/m2. The optical emission spectrum indicates that there are reactive species such as O2＋, O and He in the plasma plume. After plasma treatment, a highly crosslinking structure is formed on the fihn surface and the oxygen element is incorporated into the film surface in the forms of C O-C-, -C=O, and O C=O groups. Over a period of 10 days, the contact angle of the treated film is recovered by only about 10°, which indicates that the plasma surface modification is stable with time.
