Abstract To pursue a higher energy density (>300 Wh kg −1 at the cell level) and lower cost (<$125 kWh expected 2022) of Li‐ion batteries for making electric vehicles (EVs) long range cost‐competitive with internal combustion engine vehicles, developing Ni‐rich/Co‐poor layered cathode (LiNi 1− x − y Co Mn O 2 , + ≤ 0.2) is currently one most promising strategies because high Ni content beneficial to capacity (>200 mAh g ) while low favorable minimize battery cost. Unfortunately,...

The regulation of electron distribution single-atomic metal sites by atomic clusters is an effective strategy to boost their intrinsic activity oxygen reduction reaction (ORR). Herein we report the construction Mn decorated with innovative combination post-adsorption and secondary pyrolysis. X-ray absorption spectroscopy confirms formation via Mn-N4 coordination bonding FeMn (FeMnac /Mn-N4 C), which has been demonstrated theoretically be conducive adsorption molecular O2 break O-O bond...

Although mutually independent, simultaneous sound absorption and superior mechanical properties are often sought after in a material. One main challenge achieving such material will be on how to design it. Herein, we propose bamboo-inspired strategy overcome the aforementioned challenges. Building top of basic octet-truss design, introduce hollow-tube architecture achieve lightweight property robustness septum-chamber acoustic resonant cells. The concept is experimentally verified through...

Abstract Characterized by periodic cellular unit cells, microlattices offer exceptional potential as lightweight and robust materials. However, their inherent periodicity poses the risk of catastrophic global failure. To address this limitation, a novel approach, that is to introduce composed aperiodic cells inspired Einstein's tile, where orientation never repeats in same proposed. Experiments simulations are conducted validate concept comparing compressive responses with those common...

Enhancing energy absorption in mechanical metamaterials has been a focal point structural design. Traditional methods often include introducing heterogeneity across unit cells. Herein, we propose straightforward ribbed strategy to achieve exceptional absorption. We demonstrate our concept through modified body-centered cubic (BCC) and face-centered (FCC) truss-lattice (BCCR FCCR). Using stainless-steel 316L samples, compression tests indicate 111% 91% increase specific (SEA) for BCCR FCCR,...

Abstract In practical engineering, noise and impact hazards are pervasive, indicating the pressing demand for materials that can absorb both sound stress wave energy simultaneously. However, rational design of such multifunctional remains a challenge. Herein, inspired by cuttlebone, we present bioinspired architected metamaterials with unprecedented sound-absorbing mechanical properties engineered via weakly-coupled design. The acoustic elements feature heterogeneous multilayered resonators,...

Abstract Simultaneous high strength and toughness are highly sought‐after in lattice metamaterials, but these properties typically mutually exclusive. To overcome this challenge, the development of interpenetrating phase composite (IPC), which incorporates a net matrix infill into lattice, has shown great potential overcoming constraints is thus continuous practical interest. In work, novel aperiodic monotile truss polymer IPC that exhibit unprecedented enhancement both reported....

Abstract Aqueous zinc‐ion battery (AZIB) has become a promising candidate in grid energy storage due to its low cost, environmental friendliness, and high safety. However, AZIB usually suffers from uncontrollable zinc deposition dendrite growth as well hydrogen evolution passivation on the surface of anode. To address above issues, unique 3D Zn alloy foam anode built Zn–Sn–Pb Cu is constructed by facile hot dipping method. The proposed anode, through introducing elements Sn Pb, enhances...

Abstract The regulation of electron distribution single‐atomic metal sites by atomic clusters is an effective strategy to boost their intrinsic activity oxygen reduction reaction (ORR). Herein we report the construction Mn decorated with innovative combination post‐adsorption and secondary pyrolysis. X‐ray absorption spectroscopy confirms formation via Mn‐N 4 coordination bonding FeMn (FeMn ac /Mn‐N C), which has been demonstrated theoretically be conducive adsorption molecular O 2 break O−O...

Owing to the pervasive noise and crash hazards, tough microlattices with sound absorption capabilities are sought-after. However, typical truss unable fulfill this requirement. To overcome this, herein, we report a new design strategy for via introducing concept of interpenetrating hollow struts, which thereby constitutes novel microlattice metamaterial (IHMM). The is based on interweaved unit cells octet-truss (HOT) rhombic dodecahedron-like (HRDL) truss. Experimentally demonstrated, IHMM...

In this study, impact behavior and deformation mechanism of triply periodic minimal surface (TPMS) sheet (Schwarz' P, Schoen's I-WP, Neovius) were numerically investigated. The convergence study mesh size, sensitivity cell number, parametric investigation shell thickness performed. Three different collapse modes "⋁+⋀=X," "/+\=X," "Whole-X" experienced corresponding to Schwarz' Neovius sheets, respectively. Comparison between the anisotropic 2D circular honeycomb isotropic 3D TPMS conducted....

This work proposes a new auxetic lattice based on replacing the vertexes of traditional three-dimensional re-entrant structural with self-similar configurations. Derived by Castigliano's second theorem, theoretical model is built to predict its elastic mechanical properties, including homogenized Young's modulus and Poisson's ratio in all three principal directions. The overlapped nodes struts are considered due their excessive strut thickness. analytical results exhibit good agreement...

Customizable stress plateau of lattice structures is sought-after for various engineering applications. In this study, we present a new design strategy to achieve customizable plateau, by introducing the concept embedding self-similar structure in face-centered cubic (FCC) lattice, which thereby constitutes novel FCC hierarchical (FCCH). These FCCH specimens were experimentally validated through quasi-static compression tests, on samples 3D-printed selective laser melting using SS316L....