In situ conversion of mechanical energy into electricity is a feasible solution to satisfy the increasing power demand Internet Things (IoTs). A triboelectric nanogenerator (TENG) considered as potential via building self-powered systems. Based on triboelectrification effect and electrostatic induction, conventional TENG with pulsed AC output characteristics always needs rectification storage units obtain constant DC drive electronic devices. Here, we report next-generation TENG, which...

Vibration sensor is very necessary for monitoring the structural health of constructions. However, it still a major challenge to meet simultaneously real-time monitoring, continuous assessment, and early incident warning in simple device without complicated power analysis system. Here, we report self-powered vibration system achieve detection characteristics from dual-mode triboelectric nanogenerator (AC/DC-TENG), which can produce either alternating current (AC) or direct (DC) within...

Hard carbon (HC) represents an attractive anode material for sodium-ion batteries. However, most HC materials deliver limited capacity and the sodium storage mechanisms in slope plateau regions are controversial. Herein, a series of hard nanofibers (HCNFs) with tunable interlayer spacings designed to understand manners HC. The optimized HCNFs featuring short-range graphitic layers sufficient (0.37-0.40 nm) Na+ intercalation high reversible (388 mAh g-1 at 30 mA ) good rate capability....

Abstract Triboelectric nanogenerators (TENGs) have been introduced as a new cost‐effective technology for harvesting renewable wave energy their unmatchable performance in low frequency (<5 Hz). Here, bifilar‐pendulum‐assisted multilayer‐structured triboelectric nanogenerator (BM‐TENG) modules incorporated into vessel are reported, which high output and adaptive capacity actual marine environment. Compared with previous research work on collection by TENG, the designed BM‐TENG, is...

A universal method for triboelectric nanogenerator is provided to obtain a constant-voltage output rather than pulse-voltage output, simultaneously solving the key problems of high crest factor, low average power, and energy-output inefficiency.

Abstract The triboelectric nanogenerator (TENG) holds significant potential for applications in energy harvesting and environment monitoring. However, a notable challenge lies developing combined system capable of efficiently providing real‐time self‐powered sensing. Here, wind speed sensing (EHSS) is constructed based on noncontact electricity‐induced constant‐voltage TENG (EICV‐TENG) that achieves constant output by coupling two different phases incorporates parasitic module single phase....

Abstract Stretchable thermally conductive materials (TCMs) are highly desirable for efficient thermal management in wearable electronics. However, yielding stretchable TCMs that can simultaneously achieve superior conductivity (TC) and high stretchability remains challenging owing to the contradiction between their mechanical behaviors. Herein, design of a bi‐continuous structure enables creation composites by incorporating liquid metal (LM) within thermoplastic urethane (TPU) framework, is...

A triboelectric nanogenerator (TENG) is a potential solution for providing high output power by continuously harvesting ambient energy, which expected to sustainably charge battery the new era-the era of Internet things and sensor networks. Generally, existence parasitic capacitance has been considered be harmful in its performance. Here, we systematically investigate effects structure dimension TENG on performance from point view fabricating two types layered TENGs with considering...

Abstract Motion vector sensors play an important role in artificial intelligence and internet of things. Here, a triboelectric sensor (TVS) based on direct‐current nanogenerator is reported, for self‐powered measuring various motion parameters, including displacement, velocity, acceleration, angular, angular velocity. Based the working mechanism contact‐electrification effect electrostatic breakdown, continuous DC signal can be collected to directly monitor moving objects free from...

Abstract The high‐output triboelectric nanogenerator (TENG) is indispensable for its practical applications toward industrial products. However, the electricity loss in simple parallel connection among all units and typically high crest factor output seriously hamper of TENG. Here, a rectified TENG reported structure to solve problem connection. rotational contact–separation with phase difference between TENGs addresses extends service life simultaneously. current dramatically decreased 1.31...

Dielectric material selection coupled with surface-charge engineering is demonstrated to effectively improve the output performance of triboelectric nanogenerators in a high humidity environment.

As an emerging energy-harvesting technology, the triboelectric nanogenerator (TENG) is considered a powerful driving force toward new-era of Internet Things and artificial intelligence, but its output performance dramatically influenced by environmental humidity. Herein, direct current TENG (DC-TENG) based on triboelectrification effect electrostatic breakdown reported to address problem attenuation in high humidity environments for conventional TENGs. It found that not only enhances sliding...

Abstract Tribovoltaic nanogenerators (TVNGs) present great properties such as high direct‐current density and continuous output performance, which has potential to solve the power supply problem for miniaturized electronic devices. However, severe wear of TVNG causes rapid attenuation current density, is difficult realize long‐term operation with output. In this work, an effective strategy via interface lubrication proposed enhance lifetime TVNGs simultaneously. The water‐based graphene...

Triboelectric nanogenerators (TENGs) have attracted great attention in the distributed power sources field due to their ability convert environment mechanical energy into electrical energy. However, density, durability, and humidity resistance of TENGs remain be improved for large-scale application. Here, a noncontact constant-voltage triboelectric nanogenerator via charge excitation (ECV-TENG) is proposed enhance output performance, which first applies an adaptive-contact TENG as pump...

Maximizing TENGs’ energy cycle by analyzing the dynamic charge transfer process and suppressing air breakdown.

CO 2 pumped into nanogenerators in ocean for wave energy collection can offset carbon emissions, producing eco-friendly energy. LCA shows that the production of 1 kW electricity emits approximately 42 g dioxide, which is comparable to traditional wind

Abstract NASICON‐structured Na 3 MnTi(PO 4 ) represents an appealing cathode for sodium storage. However, the low potential from Ti 3+ / 4+ redox pair (≈2.1 V versus + /Na), undesirable rate capability, and unfavorable cyclability have inhibited its practical application. Herein, this study designs a 3.1 MnTi 0.9 0.1 (PO (NMTVP) material by doping into . The substitution not only increases medium discharge voltage, but also capacity. as‐prepared NMTVP demonstrates four‐step reaction couples...

Acoustic sensor-based human-machine interaction (HMI) plays a crucial role in natural and efficient communication intelligent robots. However, accurately identifying tracking omnidirectional sound sources, especially noisy environments still remains notable challenge. Here, self-powered triboelectric stereo acoustic sensor (SAS) with recognition capabilities by 3D structure configuration is presented. The SAS incorporates porous vibrating film high electron affinity low Young's modulus,...

One of the major geophysical discoveries concerning Tibetan Plateau is existence unusually weak layers in mid- to lower crust, a characteristic widely interpreted as result crustal melting. This interpretation, however, remains highly contentious, particularly when applied northern Tibet where crustally derived magmatic rocks are scarce. Here we report finding tourmaline-bearing mica and biotite rhyolites Bukadaban–Malanshan area, southern Kunlun Range, near margin Plateau. Zircon U–Pb...