Triboelectric Nanogenerators: Contribution of Ferromagnetic Medium to the Output of Triboelectric Nanogenerators Derived from Maxwell's Equations (Adv. Energy Mater. 21/2021)

Core–sheath structured polystyrene‐ethylene‐butene‐styrene/carbon nanotubes/carbonyl iron particlecomposite fiber with high stretchability for strain and magnetic field dual‐mode sensing

“…Conductive polymer composites, which have the ability to generate electrical signal changes under different stimuli, have been extensively used in developing flexible sensors 16,17 . Many attempts have been made to investigate polymer composites filled with carbon nanotubes (CNTs), 18–21 graphene, 22–25 and metals 26–28 to meet the requirements of high conductivity, excellent flexibility, and reliable compatibility 29,30 . Among them, CNTs possessing excellent mechanical and electrical properties have been extensively used in developing various sensors.…”

“…16,17 Many attempts have been made to investigate polymer composites filled with carbon nanotubes (CNTs), [18][19][20][21] graphene, [22][23][24][25] and metals [26][27][28] to meet the requirements of high conductivity, excellent flexibility, and reliable compatibility. 29,30 Among them, CNTs possessing excellent mechanical and electrical properties have been extensively used in developing various sensors. The unique one-dimensional structure and high aspect ratio of CNTs ensure that the composites own high conductivity at low CNTs addition, thus improving the cost-effectiveness of polymer composite-based sensors.…”

Atomic‐Scale Laminated Structure of O‐Doped WS2 and Carbon Layers with Highly Enhanced Ion Transfer for Fast‐Charging Lithium‐Ion Batteries

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improving the fast-charging performances of LIBs, in which the enhancements of anode materials are undisputedly important. [4] Graphite, the most commonly used anode material in LIBs, mainly faces the following problems: 1) The small interlayer distance of graphite (0.33 nm) is far from sufficient to perform rapid Li + transport; 2) During the fast charging, high current densities result in Li dendrite growth on graphite anode and thereby raising serious safety concerns; [5,6] 3) With the specific capacity of graphite anode approaching its ceiling (372 mAh g −1 ), further increase in capacity is expected to encounter huge challenges and thus limited energy density. Various anode materials, such as metal oxides (SnO 2 ), [7] metal sulfides (WS 2 , SnS 2 , Sb 2 S 3 ), [8] SiO x (0 < x < 2), [9] metals (Sn, Sb, Ge, Li), etc., [10,11] have been extensively explored as anode materials for fastcharging LIBs.Among them, tungsten disulfide (WS 2 ) with tunable interlayer distance, high theoretical capacity (432 mAh g −1 ), and large density (7.6 g cm −3 , about three-times larger than graphite) has drawn significant attention as fast-charging anode material for LIBs.

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A Single‐Droplet Electricity Generator Achieves an Ultrahigh Output Over 100 V Without Pre‐Charging

“…[12][13][14][15] After decades of research, the theory and output of TENG based on solid-solid interface has been deeply explored and improved. [16][17][18] However, in addition to the mechanical energy-electricity conversion between the solidsolid interface, the triboelectricity at solid-liquid interface can also be seen everywhere in the environment, such as in the falling raindrops. [19] Recently, the mechanism of solid-liquid electrification has been explored, and theories such as the electric-double-layer model and Wang's hybrid layer model have also been proposed to expand its applications.…”