Showing papers in "Nano Energy in 2020"

TL;DR: In this paper, the authors highlight the recent advances in Zn anode and outline future opportunities for the development of high-performance zinc metal anodes in aqueous ZIBs.

TL;DR: In this paper, a formal theory for nanogenerators is presented starting from the Maxwell's equations, which includes both the medium polarizations due to electric field (P) and non-electric field induced polarization terms, from which, the output power, electromagnetic behavior and current transport equation for a NG are systematically derived.

TL;DR: In this paper, a review of the recent development of manipulating the oxygen vacancies in electrocatalysts for enhancing OER performance is reviewed and the proposed mechanisms for the enhanced performance are discussed in detail.

TL;DR: In this article, a single-crystalline LiNi0.83Co0.11Mn0.06O2 (SC-NCM) with primary particles of 3-6-μm diameter is developed and comprehensively investigated, which exhibits superior cycling performance at both room temperature and elevated temperature (55 °C).

TL;DR: In this article, the A site cation of tin halide perovskite solar cells was replaced with formamidinium cation to achieve a tolerance factor of nearly 1.

TL;DR: In this article, an effective strategy to achieve ultra-high energy storage performance via nano-scale polarization mismatch and reconstruction is proposed, which can be used to design novel high performance dielectric ceramics for future energy storage devices.

TL;DR: In this article, a flexible and highly sensitive capacitive pressure sensor was fabricated based on flexible electrodes with convex microarrays and ultrathin dielectric layer, which demonstrated an ultra-high sensitivity of 30.2 kPa−1 (0-130 kPa), fast response time of 25 ms, low detection limit of 0.7 kPa and extreme stability of 100,000 cycles without fatigue.

TL;DR: In this article, a critical review is presented to systematically summarize the recent advance of flexible PVDF based piezoelectric nanogenerators in the aspects of incorporating various nanofillers, structural design, optimizing fabrication techniques and energy harvesting application.

TL;DR: In this article, a novel polymer acceptor PJ1 that exhibits a narrow band gap around 1.4 eV and a high extinction coefficient about 1.39 × 105 cm−1.

TL;DR: In this paper, advances in the recent development of photothermal materials, design of structures and engineering strategies which include the design principles for high-efficiency light-to-heat conversion, optimization of thermal management, transporting water, interface wettability, salt rejection, and hybrid systems for improving evaporation rate are carefully reviewed.

TL;DR: A comprehensive review of the relationship between Coulombic efficiency (ICE) and energy density can be found in this paper, where a detailed assessment of the reasons of the initial capacity loss (low ICE) for various types of anode materials.

TL;DR: In this paper, a flexible tin disulfide nanoflowers/reduced graphene oxide (SnS2/RGO) nanohybrid-based humidity sensor driven by a poly(tetrafluoroethylene) triboelectric nanogenerator (TENG) was reported.

TL;DR: In this paper, the authors summarize the recent progress of semitransparent OSCs, concentrating on organic semiconducting materials, semi-transparent top electrode and device engineering.

TL;DR: In this paper, the authors demonstrate the successful self-assembly of amorphous nickel phosphate-based nanotubes into two-dimensional (2D) crumpled sheet-like architectures for the first time by employing nickel glycerate particles as sacrificial templates through a two-step phosphoric acid-assisted solvothermal method.

TL;DR: In this article, a two-dimensional ultrathin vanadium pentoxide (V2O5) nanosheets grown directly on titanium (Ti) substrate was used as a novel flexible cathode with high energy density for ultrafast aqueous and flexible ZIBs.

TL;DR: In this article, a comprehensive and in-depth summary of the mechanisms behind zinc-water interaction problems, as well as state-of-the-art progress in the protection of the zinc electrode via intrinsic zinc alloy, zinc surface coating and electrolyte engineering in full pH range aqueous electrolyte.

TL;DR: In this paper, the strawberry-like structured Ag-pBT nanoparticles were introduced into PVDF scaffold fabricated by selective laser sintering, and the results demonstrated that the scaffold exhibited enhanced piezoelectric properties with output current and voltage increased by 50% and 40% than that of PVDF/pBT.

TL;DR: In this article, a 3D hierarchically ordered microporous-mesoporous-macroporous nitrogen doped carbon (3DOM Fe-N-C-900) was used as an efficient oxygen reduction reaction (ORR) catalyst.

TL;DR: Wang et al. as mentioned in this paper proposed an origami-inspired TENG integrated with folded thin film electret, which can be facilely formed from two pieces of liquid crystal polymer (LCP) strips through high degrees of paper folding.

TL;DR: In this article, a cost-effective OER/ORR bifunctional catalyst by embedding atomic Fe-Ni dual metal pairs into nitrogen-doped carbon hollow spheres (Fe-NiNC-50) is presented.

TL;DR: In this article, a cold evaporation surface was introduced between the solar surface and the bulk water to reverse conductive heat loss and turn it into an energy extraction from the bulk liquid to enhance the solar steam generation.

TL;DR: In this paper, a novel intramolecular g-C3N4-based donor-acceptor (D-A) conjugated copolymers with a porous structure and large specific surface area, have been facilely prepared by copolymerizing urea with melamine-formaldehyde (MF) resin.

TL;DR: In this article, transition metal selenides (TMSes) are proposed as potential electrocatalysts for both HER and OER due to their special layered structure, relatively narrow bandgap, unique morphology, and low cost.

TL;DR: In this paper, the polydopamine modified barium titanate (BaTiO3, BT) nanoparticles have been anchored onto the surface of electrospun poly (vinylidene fluoride-trifluoroethylene) P(VDF-TrFE) fibers to fabricate hierarchical micro-structured membrane, which not only effectively avoids the agglomeration of nanofillers but also enhances the density of interfaces in the nanocomposites.

TL;DR: In this article, the authors induced polar nano regions (PNRs) and decreased grain size to submicron scale via composition design strategy to optimize the energy storage properties of environment-friendly ferroelectrics.

TL;DR: In this article, a heterostructure electrocatalyst on Ni foam with CoP nanowires coupled with the defective CoMoP nanosheets (CoP/CoMoP) is first synthesized via hydrothermal method followed by low-temperature phosphidation.

TL;DR: In this paper, the latest representative achievements of wearable TENGs for electricity generation are comprehensively reviewed with the order of the accessible biomechanical energy on the human body from head to feet.

TL;DR: In this paper, a high-power wearable Zn-air battery with impressive electrochemical performances is achieved based on a new NiFe nanoparticles embedded N-doped carbon nanotubes (NiFe/N-CNT) as bifunctional electrocatalyst.

TL;DR: In this article, trivalent vanadium oxides (Al-ions) were introduced during a one-step hydrothermal synthesis to enable rapid Zn2+ diffusion and electron transfer.

TL;DR: In this article, a one-step in situ method under room temperature in air is proposed to synthesize CsPbBr3 QDs coated with SiO2 (CsPbBR3@SiO2), where the whole process takes only 20