A Smart Mobile Pouch Triboelectric Nanogenerator (SMP-TENG) is introduced as a promising eco-friendly approach for scavenging biomechanical energy for powering next generation intelligent devices and smart phones. This is a cost-effective and robust method for harvesting energy from human motion, by utilizing worn fabrics as a contact material. The SMP-TENG is capable of harvesting energy in two operational modes: lateral sliding and vertical contact and separation. Moreover, the SMP-TENG can also act as a self-powered emergency flashlight and self-powered pedometer during normal human motion. A wireless power transmission setup integrated with SMP-TENG is demonstrated. This upgrades the traditional energy harvesting device into a self-powered wireless power transfer SMP-TENG. The wirelessly transferred power can be used to charge a Li-ion battery and light LEDs. The SMP-TENG opens a wide range of opportunities in the field of self-powered devices and low maintenance energy harvesting systems for portable and wearable electronic gadgets.

The current challenges in the usage of liquid electrolyte in energy storage devices are closely correlated with the flexibility and portability of the devices.

In modern farming, pesticides are extensively used to deliver high-yield harvests with no concern about the amount of toxicity involved in the agriculture process. The continuous usage of pesticides also causes severe health issues for human health. Thus, promoting a rapid and accurate method for ultrasensitive and lowlevel detection of toxic pesticides is essential in real food samples to avoid serious health issues. Herein, we successfully synthesized graphene oxide (GO) incorporated with dysprosium stannate nanoplatelets (Dy 2 Sn 2 O 7 ) through a facile coprecipitation method followed by ultrasonication, which is used for the electrochemical detection of carbofuran (CF) in vegetable samples. The unique structural properties of Dy 2 Sn 2 O 7 /GO were successfully characterized by various analytical and spectroscopic techniques. The electrochemical impedance spectroscopy (EIS) measurements revealed overall elevated electrochemical behavior of the Dy 2 Sn 2 O 7 / GO composite. Additionally, the electrochemical performance of Dy 2 Sn 2 O 7 /GO analyzed by cyclic voltammetry (CV) showed superior electrocatalytic activity toward the detection of CF compared with bare and other composite electrodes due to fast electron transfer behavior and interlayer effect of Dy 2 Sn 2 O 7 NPs and GO. Furthermore, differential pulse voltammetry (DPV) analysis of Dy 2 Sn 2 O 7 /GO revealed the low-level detection limit of CF 14.8 nM with the linear concentration range of 0.05−124.65 μM and a sensitivity of 2.632 μA μM −1 cm −2 . Indeed, the real-time analysis of CF at Dy 2 Sn 2 O 7 /GO retained an adequate recovery level in vegetable samples that are desirable for practical applications and, thus, can generate the diminution of CF in the environmental contamination. Given the acceptable recovery level of CF, the Dy 2 Sn 2 O 7 /GO is a competent electrocatalyst for detecting toxic pesticides in real samples to avoid health issues.

In this study, we fabricated an aqueous Li‐ion hybrid capacitor (LHC) by using LiMn2O4 and sonochemically reduced graphene as the positive and negative electrodes, respectively. The X‐ray diffraction pattern and Raman analyses were performed to identify the phase, crystallinity, and bonding nature of the prepared LiMn2O4 and sonochemically reduced graphene. Electrochemical characterization, such as cyclic voltammetry and electrochemical impedance spectroscopy, for the LiMn2O4 and graphene was performed by using a three‐electrode configuration. Furthermore, asymmetric LiMn2O4∥graphene LHC was fabricated and tested for its device performance. The galvanostatic charge‐discharge analysis shows that the fabricated LiMn2O4∥graphene LHC device delivered a high specific capacitance of 59.45 F g−1 at a constant discharge current density of 0.4 A g−1 with a better coulombic efficiency of 97.9 %. The LiMn2O4∥graphene LHC device delivered a high specific energy of 39.96 Wh kg−1 at a power of 440 W kg−1 with better capacitance retention of 90.24 % even after 1000 cycles.