Peng Liu

Transition metal phosphides (TMPs) have been considered as the prospective anode materials for lithium‐ion batteries (LIBs) due to their prominent theoretical capacity. However, their unsatisfactory kinetic performance and ineluctable volume expansion result in rapid capacity decay and the collapse of material structure during cycles, which restrict their commercial application. Herein, a hollow cobalt phosphide with nitrogen‐doped carbon nanotube‐entangled heterostructure(H‐CoP@NCNTs) is constructed using ZIF‐67 as a sacrificial host and serves as an anode for LIBs. The elastic hollow carbon framework as a covering layer for CoP‐based active material can regulate the volume change during cycles. And the multidimensional conductive network with nitrogen‐doped carbon nanotubes wrapped can improve the electron/ion transport. The H‐CoP@NCNTs anode presents a considerable reversible capacity of 754.8 mAh g ⁻¹ at 0.1 A g ⁻¹ and a long‐cycle stability (418.6 mAh g ⁻¹ after 1000 cycles at 2 A g ⁻¹ ). This work provides an efficient approach for designing and exploiting advancing TMP‐based anodes.

Waterborne polyurethane (WPU) is an attractive substrate for flexible electronics owing to its structural tunability and environmental compatibility; however, simultaneously achieving high mechanical performance, self‐healing capability, electrical conductivity, and stable sensing behavior remains challenging. Herein, a dual‐dynamic waterborne polyurethane (DWPU) matrix crosslinked by DHA/ADH was employed as a self‐healing substrate. Carboxylated multi‐walled carbon nanotubes (MWCNTs) at various loadings were incorporated to systematically investigate their effects on the mechanical, self‐healing, electrical, and sensing properties. The introduction of MWCNTs significantly enhanced the mechanical strength and electrical performance of the DWPU matrix. The composite containing 0.5 wt% MWCNTs exhibited a tensile strength of ~36 MPa, an elongation at break of ~800%, a Young's modulus of 8.6 MPa, and a toughness of 161 MJ/m ³ . All DWPU‐based samples displayed pronounced self‐healing capability under thermal stimulation. Increasing MWCNT content also enhanced the electrical conductivity and strain sensitivity, while the composites maintained stable and repeatable resistance responses during cyclic deformation. When attached to human joints, the DWPU/MWCNT flexible sensor provided rapid resistance response and reliable real‐time motion detection. This work demonstrates a feasible strategy to balance mechanical robustness, self‐healing capability, conductivity, and sensing performance in WPU‐based composites, offering potential for wearable electronics, electronic skin, and human‐machine interfaces.

Aerogels, as archetypal ultralight porous materials, exhibit great potential in thermal insulation and functional materials owing to their extremely low thermal conductivity and high specific surface area. However, conventional silica aerogels (SA) suffer from structural brittleness due to the rigid inorganic skeleton, limiting their use in flexible or deformation‐prone environments. To address this issue, we propose a cooperative enhancement strategy using cellulose nanofibers (CNF) and waterborne polyurethane (WPU) to construct a composite silica aerogel. This approach forms a “rigid–flexible complementary” three‐dimensional network, where CNF provides flexible support and WPU enhances interfacial adhesion and energy dissipation. Compared with conventional polymer‐reinforced aerogels, this strategy improves organic–inorganic interfacial interactions at the nanoscale, leading to enhanced mechanical robustness and stress transfer efficiency. The resulting composite aerogel achieves a low thermal conductivity of 0.02555 W·m ⁻¹ ·K ⁻¹ , a high compressive strength of 221.7 kPa, stable fatigue resistance over 200 cycles, and a fast strain response time of 43 ms. This study offers a novel design paradigm for high‐toughness thermal insulation aerogels and lays a material foundation for their practical applications in flexible insulation and high‐temperature sensing fields.

To overcome the inherent electrical insulation and limited stretchability of polydimethylsiloxane (PDMS), a transparent, highly tough, ionically conductive hydrogel-based PDMS elastomer was developed via a synergistic multinetwork and water–oil equilibrium strategy. The elastomer integrates a covalent poly(acrylic acid) network, dual dynamic boronate ester networks, and a hydrogen-bonding network of polyethylene glycol (PVA) and glycerol. The resulting PDMS/PVA/Tannic acid/Borax/Acrylic acid (PPTBA) composite elastomer exhibits a tensile strength of 1780 kPa, an elongation at break of 980%, and a toughness approximately five times that of pure PDMS. As a flexible sensor, it delivers an ionic conductivity of 0.7 S/m, a gauge factor ranging from 0.716 to 2.8 over a strain range of 0–570%, fast response and recovery times (659 and 668 ms), and outstanding cyclic stability over 700 tensile loading-unloading cycles. The sensor enables accurate real-time monitoring of diverse human motions, from subtle muscle contractions to large-amplitude joint flexion, and can be seamlessly integrated into human-machine interaction systems for synchronous robotic gripper control. Furthermore, it reliably identifies vehicle weight categories and estimates speed through distinct resistance signal patterns, as validated by finite element analysis. This work presents a generalizable strategy for reconciling the long-standing trade-off between mechanical robustness and high sensing performance, advancing next-generation wearable health monitors, intelligent human-machine interfaces, and smart transportation systems.

Hydrogel adhesives that simultaneously possess high toughness, strong interfacial adhesion, and freeze resistance are urgently needed for emerging flexible electronics and wearable devices. However, conventional hydrogels typically suffer from weak bonding to diverse substrates and brittle failure under subzero conditions. Herein, we present a cation-dipole-enhanced eutectic organohydrogel (APQ-DES) constructed via an interpenetrating network strategy using a choline chloride/glycerol deep eutectic solvent (DES) as the dispersion medium. The system combines chemically cross-linked polyacrylamide (PAM), poly(vinyl alcohol) (PVA), and cationic quaternary ammonium chitosan (QCS). The DES endows the hydrogel with excellent freeze tolerance, while synergistic cation-dipole interactions between QCS and various substrates, together with hydrogen bonding from PVA and PAM, enable robust adhesion across diverse materials, including PTFE, rubber, glass, and wood, achieving lap-shear strengths up to 584.57 kPa. The optimized APQ-DES hydrogel exhibits outstanding mechanical properties (tensile strength: 206.99 kPa, elongation at break: 1891%, toughness: 1.71 MJ·m^-3), maintains flexibility and ionic conductivity at -20 °C, and functions as a reliable strain sensor with rapid response (361 ms), broad sensing range (0-400% strain), and stable cyclic performance. Demonstrations of multisite human motion monitoring under cold conditions highlight its potential for winter sports training evaluation, human-machine interfaces, and low-temperature wearable healthcare applications.