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As a new branch of efficient and low-cost mechanical energy conversion technology, triboelectric nanogenerator (TENG) is a potential solution to provide a long-term power supply for the Internet of Things (IoT) sensors and portable electronic devices. However, due to inherent working properties of TENG itself such as extremely high internal impedance, pulse, and alternating current (AC) output, TENG can not directly supply power to loads such as batteries efficiently. Based on these, we describe TENG’s performance from a new perspective of powering ability. It consists of two aspects: the ability to transport charge effectively and the ability to output high power quality current steadily. In order to push forward the developments and applications of TENG, it is necessary to improve its power supply capacity from different perspectives. Fortunately, in recent years, a variety of output signal’s management strategies aiming at effectively managing the generated electricity and significantly improving powering ability of TENG have obtained significantly progress. Herein, this paper discusses the working mechanisms and different load characteristics of TENG at first to clarify the electric performance of TENG. Then, on basis of theoretical analysis, the output signal’s management strategies are elaborated from four aspects: improving the cycle output electricity of TENG, increasing the surface charge density of TENG, improving the power quality of TENG-based energy harvesting system, promoting the application of TENG through integrated circuit (IC) technology and TENG network, and the relevant principles and applications are discussed systematically. Finally, the advantages and disadvantages of the above output signal’s management strategies are summarized and discussed, and the future development of the output signal’s management strategies for TENG is prospected.
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