Chain-length engineered interfacial architecture enables dendrite-free aqueous zinc-ion batteries.

The growth of zinc dendrites in aqueous zinc-ion batteries (AZIBs) significantly compromises the cycling stability and operational lifespan, especially under prolonged charge-discharge cycles at high load, where dendrite formation poses serious safety risks. In this work, we propose a "critical network equilibrium" mechanism enabled by molecular weight-optimized dextran (DEX). Specifically, DEX with a molecular weight of 70 000 (D7) reaches a stabilization threshold in the ZnSO electrolyte, where it self-assembles into an adaptive interfacial architecture.

Organic Cathode Electrolyte Interphase Achieving 4.8 V LiCoO.

Developing high-voltage electrolytes to stabilize LiCoO (LCO) cycling remains a challenge in lithium-ion batteries. Constructing a high-quality cathode electrolyte interphase (CEI) is essential to mitigate adverse reactions at high voltages. However, conventional inorganic CEIs dominated by LiF have shown limited performance for high-voltage LCO.

NiM (Sb, Sn)/N-doped hollow carbon tube as high-rate and high-capacity anode for lithium-ion batteries.

Alloy-type materials are regarded as prospective anode replacements for lithium-ion batteries (LIBs) owing to their attractive theoretical capacity. However, the drastic volume expansion leads to structural collapse and pulverization, resulting in rapid capacity decay during cycling. Here, a simple and scalable approach to prepare NiM (M: Sb, Sn)/nitrogen-doped hollow carbon tubes (NiMC) via template and substitution reactions is proposed.

Azadipyrromethene Dye-Assisted Defect Passivation for Efficient and Stable Perovskite Solar Cells.

Organic-inorganic perovskite solar cells (PSCs) provide one of the most outstanding photovoltaic (PV) technologies, yet their efficiency, stability, and defect passivation engineering still remain challenging. We demonstrate the use of low-cost, eco-friendly, and multi-functional aza-dipyrromethene (Aza-DIPY) dye molecules to promote the power conversion efficiency (PCE) and the operating stability of PSC devices. The Aza-DIPY dye was meticulously synthesized and incorporated into PSC devices via a one-step solution processing approach.

Improved SERS activity of non-stoichiometric copper sulfide nanostructures related to charge-transfer resonance.

The low enhancement factor of semiconductor SERS substrates is a major obstacle for their practical application. Therefore, there is a need to explore the facile synthesis of new SERS substrates and reveal the SERS enhancement mechanism. Here, we develop a simple, facile and low-cost two-step method to synthesize copper sulfide based nanostructures with different CuS contents.