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Mechanisms of the Planar Growth of Lithium Metal Enabled by the 2D Lattice Confinement from a Ti3C2Tx MXene Intermediate Layer

The growth mechanism of Li on Ti3C2T x is studied by experiments and ab initio calculations, which predict that Li+ initially formed hcp layers on the Ti3C2T x surface followed by plating of bcc‐Li. Large formation energy and small migration barrier of Li+ result in planar Li deposition on Ti3C2T x . Thus, the dense and planar Li metal...

GSH‐Responsive Radiosensitizers with Deep Penetration Ability for Multimodal Imaging‐Guided Synergistic Radio‐Chemodynamic Cancer Therapy

A glutathione (GSH) responsive size‐transformability nanovesicle, based on self‐assembly of Au‐MnO Janus nanoparticles (JNPs) encapsulating quenched dyes IR1061, is designed. Under the GSH stimulation, the JNP vesicle with high permeability and GSH depletion ability provides a fluorescence/photoacoustic/magnetic resonance imaging multimodal imaging‐guided...

Adaptive Ionogel Paint from Room‐Temperature Autonomous Polymerization of α‐Thioctic Acid for Stretchable and Healable Electronics

A universal ionogel paint is developed from the room‐temperature ring‐opening polymerization of a natural molecule—α‐thioctic acid in the presence of ionic liquid. The ionogel paint coats arbitrarily shaped substrates owing to the widely adjustable mechanical properties and rheology as well as good interfacial adhesion. The ionogel‐coated substrates...

Double Charge Transfer Dominates in Carrier Localization in Low Bandgap Sites of Heterogeneous Lead Halide Perovskites

Temperature‐dependent transient absorption and time‐resolved photoluminescence investigations provide insights into electronic processes in heterogeneous organic‐inorganic halide perovskites. By taking 3D and quasi‐2D perovskite model systems, evidence is provided that charge carrier transfer (a double charge transfer) rather than energy migration dominates...

High Performance Flexible Lithium‐Ion Battery Electrodes: Ion Exchange Assisted Fabrication of Carbon Coated Nickel Oxide Nanosheet Arrays on Carbon Cloth

An ion exchange‐assisted fabrication of carbon‐coated transition metal oxides (TMOs) strategy is developed for construction of carbon coated TMOs based flexible anodes. The developed synthetic route simultaneously achieves excellent graphitization of the carbon coating and bypasses the harmful reduction of TMOs at high temperatures. The robust carbon...

Ionic Conductive Organohydrogels with Dynamic Pattern Behavior and Multi‐Environmental Stability

In summary, the designed organohydrogel provides a novel strategy for high‐performance hydrogels by using a visual microphase separation and hydrophobic association of the organohydrogel segments. It is envisioned that the designed organohydrogel materials may be promising for application in information‐recognition platforms with information identification...

Weak Ionization Induced Interfacial Deposition and Transformation towards Fast‐Charging NaTi2(PO4)3 Nanowire Bundles for Advanced Aqueous Sodium‐Ion Capacitors

A versatile interfacial deposition and phase‐transformation strategy induced by the weak ionization chemistry of NaH2PO4 is developed for fabricating a unique NaTi2(PO4)3 nanowire bundles anode, which works stably with expanded potential window and exhibits fast‐charging capability. Using activated carbon as a cathode and polyvinyl alcohol‐NaClO4 gel...

Lithium‐Ion Desolvation Induced by Nitrate Additives Reveals New Insights into High Performance Lithium Batteries

The key role of additives in promoting Li+ desolvation in battery electrolytes is unraveled. The nitrate (NO3 −) anions are found to incorporate into the solvation shells, change the local environment of Li+ ions and their coordination in the electrolyte, resulting in more efficient Li+ desolvation and significantly enhanced battery performance. ...

Vapor Transport Deposition of Highly Efficient Sb2(S,Se)3 Solar Cells via Controllable Orientation Growth

A facile, general, and cost‐efficient vapor transport approach to precisely control the growth of high quality antimony selenosulfide (Sb2(S,Se)3) absorbers is developed and their defect mechanisms are elucidated. The efficiency of 8.17% is the highest value reported to date for Sb2(S,Se)3 solar cells fabricated via vapor transport technology. ...

Integrating Flexible Ultralight 3D Ni Micromesh Current Collector with NiCo Bimetallic Hydroxide for Smart Hybrid Supercapacitors

A flexible ultralight 3D Ni micromesh is fabricated by lithography and selective electrodeposition process. Flexible smart supercapacitor integrated by 3D Ni micromesh and high‐active Ni–Co bimetallic hydroxide delivers a considerable specific capacity, high rate capability, and satisfactory cycling stability. In addition, the device also shows an electrochromic...

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