An up-to-date review of hybrid triboelectric-electromagnetic nanogenerators is provided. Rotational, pendulum, linear, sliding, cantilever, flexible blade, multidimensional, and magnetoelectric hybrid technologies are thoroughly analyzed. Promising results highlight the potential of these hybrid technologies for both small-scale and large-scale powering.

A facile method was developed to achieve visible light (green) and near infrared dual-mode afterglow emissions from carbon dots (CDs)-based materials at ambient conditions for the first time. We proposed a promising method in advanced information security applications through a special manner of readout. The as-developed method was confirmed to be applicable to many kinds of CDs for achieving or enhancing

A wearable capacitive sensor, which can recognize both the magnitude and orientation of magnetic field with non-overlapping capacitance signals, was proposed as touchless and intelligent communication channel. The integrated sensor exhibited the high sensitivity of over 1.3 T-1 and detection limit down to 1 mT with excellent durability (over 10,000 cycles). The sensor revealed as an efficient and ternary

A cooperative solvation/surface engineering approach is reported to achieve the reversible Mg plating/stripping in conventional carbonate electrolytes. Benefitting from the strategy, Mg2+ can easily overcome the reduced desolvation barrier and penetrate the Mg2+-conducting polymer coating, deposited on the Mg metal anode successfully, promoting the application of magnesium anode in carbonate electrolytes

Triboelectric nanogenerator (TENG)/carbon dots-TNs supported over three-dimensional graphene aerogel (3DGA@CDs-TNs) system was constructed. TENG and 3DGA@CDs-TNs present excellent degradation activity toward brilliant green (88.26%, 40 min) and direct blue 5B (89.6%, 90 min). The coupling interaction of photocatalysis and TENG leads to an enhanced removal ability. The degradation pathways for brilliant

A reversible Zn2+ insertion in anatase TiO2 nanocrystals is reported for the first time. This is the first report regarding TiO2 for zinc-anode-based electrochromic devices, which will subsequently broaden its applications to zinc-ion electrochemical cells. A prototype device based on the TiO2 nanocrystals delivers a high optical modulation, fast response times, and robust electrochemical stability

Oxygen functional groups improve rate capability as well as long-term cycling stability of graphite oxide. The adsorption-intercalation hybrid K+ storage mechanism of graphite oxide (GO) is elucidated by in situ Raman spectroscopy and systematic electrochemical characterization. It is unraveled that the C = O and COOH rather than C-O-C and OH groups contribute to the formation of highly conductive

Enzyme-mimicking activities of different nanomaterials (nanozymes) and the recent progress in the construction of nanozyme-based biosensors with various examples are discussed in this review. Physicochemical properties of nanomaterials (size, composition, pH, temperature, surface chemistry) play crucial role in the nanozyme activities. The emerging nanozyme-based biosensors promise great potential

The Internet of Things era related electronics were updated based on carbon nanotube transistors, radiofrequency circuits and energy storage devices. The applications in healthcare and biomedical devices were discussed including sensory, data processors and actuators. The fabrication of wafer-scale carbon nanotubes has been introduced as well as the machine learning strategy for prediction of optimal

Stable and durable electromagnetic interference (EMI) shielding performance was achieved in harsh environments by applying a thin protective coating of hydrophobic 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS) on polypyrrole (PPy)-modified fabrics. The damaged POTS layer can be instantaneously self-healed (~ 4 s) for the first time by the microwave heating effect of PPy. The self-healing process

A surface oxygen-injection strategy is proposed to synergistically modulate the electronic structure of the SnS2 nanosheets, thereby regulating the oxophilicity of the catalyst surface. The surface oxygen doping facilitates the CO2 activation and enhances the affinity for HCOO* species. The oxygen-injection SnS2 nanosheets exhibit a remarkable Faradaic efficiency of 91.6% for carbonaceous products

An organic solvent-assisted intercalation and collection (OAIC) approach for preparing Ti3C2Tx (MXene) was developed. The features of OAIC approach are the low requirement for facility, gram-level preparation with remarkable yield and easy control over the dimension of Ti3C2Tx flakes. The Ti3C2Tx flakes prepared by OAIC approach showed the outstanding capacitive and rate performance.

This highlight presents a recent technique of “Light Vaccine” for COVID-19 pandemic control. Though this technique has the germicidal advantage to SARS-CoV-2, its shortcomings will limit the wide and in-depth application. We make a perspective of real nano light vaccine, which will play an important role in the prevention and control of COVID-19. Briefly, This flow chart described the MWCNT was fabricated

An up-bottom laser erasing process utilizing electrochemical corrosion has been integrated into the bottom-up writing process. The presented erased laser writing technology exhibits excellent reproducibility for sustainable manufacturing of flexible highly conductive Cu structure. The suitability of the writing-erasing-rewriting process for repairing failure patterns and reconfiguring circuits has

The phase diagram of transition metal carbides (TMCs) is discussed. The physical and chemical property of TMCs is systematically summarized. The potential application and controllable synthesis of TMCs is discussed. A summary is provided to afford the principle to further investigation.

The first perspective regarding the application of nano-micro size aggregations on the prevascularizations and biomedicine. This perspective provides an in-depth discussion regarding the use of these prevascularized nano-micro size aggregates in biomedicine and regenerative medicine.

The review discusses the key concepts, loss mechanisms and test methods of electromagnetic interference (EMI) shielding. The research progress of polymer matrix EMI shielding composites with different structures is detailedly illustrated, especially their preparation methods and corresponding evaluations. The key scientific and technical problems for polymer matrix EMI shielding composites with different

A three-dimensional spider web-inspired structured graphene skeleton is constructed. The spider web-like skeleton endows paraffin wax with a significantly high longitudinal and transverse thermal conductivity enhancement of ~1260% and ~840%, respectively, at 2.25 vol% skeleton. The resultant composites exhibit outstanding performance on the thermal management of Li-ion batteries.

The iron selenide composite with ether-based electrolyte presents excellent potassium storage performance. We develop in situ visualization technique to monitor the potassiation–depotassiation process. Iron selenide composite in ether-based electrolyte presents a homogeneous electrochemical reaction, resulting in a stable potassium-ion storage.

Nano-dispersed SnS2 and CoS2 phases endow CSC anode with electrolyte/structure-dependent cocktail mediation effect, showing superior rate capability and evidently lowered charge plateau compared with CoS2 and SnS2/CoS2 mixture. Alternative electrochemical processes between nano-dispersed different metal sulfides and Na+ carriers effectively overcome intrinsic flaws of monometallic sulfide, responsible

NiCo-LDHs successfully grow in situ on rod-like ZnO with unique structures. The interface of NiCo@C and rod-like ZnO result in interfacial polarization. The RLmin of NiCo@C/ZnO reaches − 60.97 dB with the EABmax of 6.08 GHz. The excellent performance comes from the effect of dielectric loss and magnetic loss.

Recent progress in nanoscale covalent organic frameworks (COFs)-mediated nanomedicines for cancer diagnosis and therapy is comprehensively summarized in this review. Future perspectives and challenges regarding COFs-mediated nanomedicines for diagnosis and therapy are discussed, with particular emphasis on possible clinical translation.

Nitrogen-doped mesoporous carbon spheres (MCS) are prepared as anode materials of potassium-ion batteries by a facile method. The MCS have larger interlayer spacing, high specific surface area, abundant mesoporous structures and nitrogen-doped active sites, achieving high-rate and long-cycle performances as anodes. The capacitive-controlled effects play dominant role in total storage mechanism and

The concurrent application of vacancy enrichment and surface coating in β-MnO2 electrode can both improve the intercalation kinetics and inhibit the Mn dissolution. The oxygen-deficient β-MnO2@graphene oxide electrode delivers a reversible capacity of 129.6 mAh g−1 after 2000 cycles at 4C, outperforming the state-of-the-art MnO2-based cathodes. The excellent performance is rooted in the strong binding

Water-dispersible CsPbBr3 nanocrystals (NCs) exhibit ultra-stability (>200 days) in water with only ~20% decline of the initial photoluminescence intensity. The as-prepared ultra-stable water-dispersible CsPbBr3 NCs showed high electrocatalysis activity (faradaic yield: 32% for CH4, 40% for CO) and operation stability (>350 h) for CO2 reduction reaction.

Surface-modified graphite (acid-treated expanded graphite (AEG)/base-etched graphite (BEG)) displays an abundant micro- to nano-sized pores/defects and exposed edge graphitic site. AEG and BEG exhibit high specific capacity, rate capability and cyclic stability compared with pristine graphite. High defect density of BEG electrode exhibits profound effect on the chloroaluminate anions intercalation

A special additive-(benzylamine)trifluoroboron (BBF) is applied to improve the quality of FAMAPbI3 perovskite. BBF concurrently passivates cationic and anionic perovskite defects. The perovskite solar cell with BBF shows a high power conversion efficiency of 23.24% and an excellent stability.

Ultra-thin CoNiO2 nanosheet with rich oxygen defects anchored on the vertically arranged Ni nanotube arrays (Od-CNO@Ni NTs) is successfully constructed. The Od-CNO@Ni NTs electrode delivers extraordinary electrochemical performance. The theoretical calculations reveal that oxygen defects effectively improve the electrochemical kinetics and the surface electronic state structure of Od-CNO @ Ni NTs,

A general layered 2D materials-derived atomic substitution conversion strategy is proposed to achieve the synthesis of large-size ultrathin nonlayered 2D materials. Using low-melting-point CdI2 flakes via a simple hot plate assisted vertical vapor deposition method as precursor, large-size ultrathin CdS flakes were successfully converted from layered to nonlayered nanostructures through a facile low-temperature

Theranostic agent 1 (TA1) was successfully developed to provide dual functions: anti-inflammatory therapy and precise diagnosis. TA1 selectively reacts with H2Sn in the mitochondria in response to inflammatory reactions to simultaneously produce both indomethacin as a drug and ring-opened fluorescence-on Rhodol. Theranostic behavior of TA1 was proven by in vitro and in vivo imaging. TA1 reveals inflammatory

The characteristics of Prussian blue analogues PBAs in different aqueous systems are analyzed. The relationship between structure and performance of PBAs is summarized. The measures to improve electrochemical property of PBAs are proposed.

Fully inkjet-printed transparent high-performance thin-film transistors (TFTs) with ultrathin indium tin oxide (ITO) as semiconducting channels were achieved. The energy band alignment at ITO/Al2O3 channel/dielectric interface was investigated by in-depth spectroscopy analysis. Fully printed n-type metal–oxide–semiconductor inverters based on ITO TFTs exhibited extremely high gain of 181 at a low-supply

The fundamental structure, photophysical and electrical properties of 2D perovskite films were illustrated systematically. The advantages and challenges of 2D perovskite light-emitting diodes (PeLED) have been also discussed, which may benefit the audient to get insight into the 2D perovskite materials as well as the resultant LED devices. An outlook on further improving the efficiency of pure-blue

A multiscale structure is realized through layer-by-layer deposition with atom-scale precision via atomic layer deposition FeSiAl@ZnO@Al2O3 exhibits record-high absorption properties in low-frequency bands. The corrosion resistance is improved by the unique multistage oxide barriers.

Four main strategies for improving the hydrogen evolution reaction (HER) performance of Ru-based catalysts were summarized. The source of HER activity of Ru-based catalysts is discussed in terms of catalytic mechanism. The current states, challenges and prospects were specifically provided for Ru-based catalysts.

A binder-free and freestanding all-climate cathode FeS2@C/CNT in aluminum-ion batteries working from −25 to 50 °C with exceptional flexibility, enhanced capacity retention (above 117 mAh g−1) and rate capacity even at a low temperature of −25 °C. High rate capacity (above 151 mAh g−1 at 2 A g−1) and robust long-term stability (above 80 mAh g−1 after 2,000 cycles at 1 A g−1) at room temperature. DFT

Small size V2SnC MAX phase was prepared by the molten salt method. V2SnC MAX phase electrode is able to deliver high gravimetric capacity up to 490 mAh g−1 and volumetric capacity of 570 mAh cm−3 A charge storage mechanism with V2C-Li redox and Sn–Li alloying dual reactions was proposed

This review focuses on the differences and similarities of photocatalysis and electrocatalysis in the latest 2D nanomaterials. Strategies and traps for performance enhancement of 2D nanocatalysts are highlighted. Challenges, future directions and applications for new photocatalysis and electrocatalysis exploiting 2D nanomaterials are suggested.

High-quality large-area SnO2 films are fabricated by chemical bath deposition with the addition of KMnO4. The presence of K and Mn ions can improve both the crystallinity and the phase stability of perovskites and reduce hysteresis of devices simultaneously. Perovskite solar modules (22.4 and 91.8 cm2) are demonstrated with active area efficiencies of 17.26% and 13.72%, respectively, and the 22.4 cm2 perovskite

The characteristics of metal- and metal oxide-based nanozymes with diverse construction are dissertated. The intrinsic properties and catalytic mechanism of metal- and metal oxide-based nanozymes are discussed. The recent applications of metal- and metal oxide-based nanozymes in biological analysis, relieving inflammation, antibacterial, and cancer therapy are reviewed.

Highlights Carbon nanotubes/polymerizable ionic liquid copolymer (CNTs/PIL) provides nucleation sites and inhibits the combination of microcellular structures. The increase in evaporate time improves the conductive network of composite foams. Electromagnetic interference shielding effectiveness (EMI SE) and specific EMI SE of the composite foam displays 69.9 dB and 211.5 dB/(g cm−3). Polarization,

Recent progress of efficiency and long-term stability for perovskite solar cells, and the development of perovskite-based tandem solar cells are described. The progress of lead-free perovskite solar cells and their potential for industrial production are discussed in detail. The current status, ongoing challenges, and the future outlooks of perovskite solar cells are highlighted.

SiO2-mediated ZIF-L is developed to prepare Co–N4@2D/3D carbon. Co–N4@2D/3D integrates the advantages of 0D Co single atom and 2D/3D carbon support. Co–N4@2D/3D carbon-based sulfur cathode enables a high reversible specific capacity and low capacity fading rate.

Nanoparticles hold considerable promise for controlling the local pharmacokinetics of therapeutic agents during osteoarthritis therapy. The advantages of nanoparticles, the bioactive design, the transports and interactions within cartilage, and therapeutic mechanisms are discussed. This review proposes future strategies to design more intelligent and multi-functional nanomaterials as delivery systems

A facile ion-imprinting method (IIM) is used to synthesize the isolated Fe-N-C single-atomic site catalyst (IIM-Fe-SASC), which mimics the natural enzyme-like active site and shows excellent peroxidase-like activity. The ion-imprinting process can precisely control ion at the atomic level and form numerous well-defined single-atomic Fe-N-C sites. The IIM-Fe-SASC has been successfully used as the nanoprobe

The delicate “3D helix–2D sheet–1D fiber–0D dot” hierarchical aerogels were successfully synthesized. The graphene sheets are uniformly intercalated by helical carbon nanocoils, which endow the as-obtained aerogel with abundant porous structures and better dielectric properties. By adjusting the growth parameters of 0D core-shell structured particles and 1D carbon nanofibers, the tunable electromagnetic

The structure–property relationship of PdSe2 is discussed, i.e., layer number vs. tunable bandgap, pentagonal structure vs. anisotropy-based polarized light detection. The synthesis approaches of PdSe2 are thoroughly compared, including bottom-up methods such as chemical vapor transport for bulk crystals, chemical vapor deposition for thin films and single-crystal domains, selenization of Pd films

A novel injectable double-layer-gel matrix is developed. The hierarchically structured dual lipid gel matrix enables time-programmed drug delivery. Applying a modest dose of sorafenib in advance can reeducate tumor-associated macrophages and potentiate anti-CD47 treatment.

Due to their multifaceted oncological applications and immense translational potential, the bio-nanocarriers and nano-biodevices are being conceived as a futuristic panacea for cancer. Aspects impeding promising prognosis of lung cancer, various nano-biotools, and their plausible benefits over the conventional nanocarriers for lung cancer management have been briefed upon in this review. Research findings

Highlights The iontronic pressure sensor achieved an ultrahigh sensitivity (Smin > 200 kPa−1, Smax > 45,000 kPa−1). The iontronic pressure sensor exhibited a broad sensing range of over 1.4 MPa. Pseudocapacitive iontronic pressure sensor using MXene was proposed. ABSTRACT Flexible pressure sensors are unprecedentedly studied on monitoring human physical activities and robotics. Simultaneously, improving

Zero capacity fading after over 3000 cycles at 1 C. Only 6.4% capacity is lost when rate is increased by 50 times. Diffusion mechanism of formation and fracture of hydrogen bonds is proposed.