A Self‐Recognition Separator for Ion Management to Customize Selective Zn²⁺ Channels Toward Dendrite‐Free Zinc Metal Anodes

Carbon Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

ABSTRACT Aqueous zinc‐ion batteries (ZIBs) are promising candidates for next‐generation energy storage, but the problems related to Zn dendrites and side reactions severely hinder their practical applications. Herein, a self‐recognition separator based on Bi‐based metal–organic framework (GF@CAU‐17) is developed ion management achieve highly reversible anodes. The GF@CAU‐17 has behavior customize selective 2+ channels, effectively repelling SO 4 2– H 2 O, facilitating conduction. inherent properties of CAU‐17 result in repulsion ions while disrupting hydrogen bond network among free O molecules, restraining by‐products. Simultaneously, zincophilic characteristic expedites desolvation [Zn(H O) 6 ] , leading self‐expedited pumping effect that dynamically produces steady homogeneous flux, thereby alleviates concentration polarization. Consequently, symmetric cell can long lifespan 4450 h. Moreover, constructed Zn//GF@CAU‐17//MnO delivers high specific capacity 221.8 mAh g −1 88.0% retention after 2000 cycles.

Language: Английский

---

Aerogel‐Driven Interface Rapid Self‐Gelation Enables Highly Stable Zn Anode

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 29, 2024

Abstract The practical application of Zn metal anodes is currently hindered by uncontrolled dendritic growth and water‐induced parasitic reactions that are closely related to the solvation structure interfacial transport kinetics 2+ . Herein, a facile interface self‐gelation strategy proposed stabilize anode introducing ‐OH‐rich silica aerogel (HSA) on surface. unique interconnected network strong hydrophilia HSA made aqueous electrolyte near gel rapidly spontaneously, resulting in formation water‐poor layer. layer can effectively accelerate desolvation process reduce water molecule activity surface through hydrogen bonding interaction, thus achieving rapid migration alleviating side reactions. In addition, well‐defined nanochannels provide fast path homogenize flux, enabling uniform deposition. As result, HSA‐modified (HSA@Zn) exhibits excellent long‐term cycling stability (over 6000 h at 4 mA cm −2 ), feasibility for this HSA@Zn further demonstrate full cells. aerogel‐driven propose work provides new insights into design advanced zinc‐ion batteries.

Language: Английский

---

Biphase Nanocrystalline WO₃ Thin Films for Dual-Functional Electrochromic Smart Windows with Long-Term Stability

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

---

Multivalent Dipole Interactions‐Driven Supramolecular Polymer Layer Enables Highly Stable Zn Anode Under Harsh Conditions

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract Aggressive side reactions and dendrite growth, associated with the unstable Zn anode/electrolyte interface, have impeded practical application of metal‐based batteries. Here, a donor‐acceptor (D‐A) polymer is employed to reconstruct robust supramolecular (SP) protective layer achieve highly stable anodes. The D‐A possessing abundant electron donor acceptor sites can dynamically co‐crosslink water molecules 2 ⁺ through multivalent dipole interactions (MDIs), resulting in formation network. MDIs disrupt original strong hydrogen‐bonding network within polymer, leading reconfiguration chain conformations an increase intermolecular free volume exposing more widely distributed dipoles, thereby regulating 2+ desolvation behavior facilitating rapid uniform plating. Meanwhile, resultant endows SP ultra‐high mechanical modulus 10.4 GPa, which homogenize stress distribution during plating process for effective suppression. Consequently, SP‐assisted asymmetric cell achieves nearly 99.94% Coulombic efficiency over 9000 cycles, enabling Zn/Zn cycle 540 h under ultrahigh 92% utilization. Outstanding cycling stability also successfully demonstrated high mass‐loading (≈12.8 mg cm −2 ) pouch cells, further demonstrating its prospects applications.

Language: Английский

---

Diatomite‐Based Hybrid Electrolyte for Improving Reversibility of Cathode/Anode Interface Reaction in Zn‐MnO₂ Batteries

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Abstract The cyclic stability of aqueous zinc‐manganese batteries (ZMBs) is greatly restricted by the side reaction anode and irreversibility cathode. In this work, a solid‐liquid hybrid electrolyte mixing traditional ZnSO 4 ‐based diatomite (denoted as Dtm) proposed that exhibits good compatibility reversibility in both interface cathode interface. abundant hydroxyl groups at disturb hydrogen bond network water molecule, which weakens corrosion active to Zn anode. Moreover, negatively charged surface able regulate electric field promote uniform deposition ion well inhibit formation sulfate (ZHS) As result, Zn||Zn symmetric battery with Dtm achieves stable cycling for 2500 h 1 mA cm −2 /1 mAh , while Zn||MnO 2 can achieve cycle time 500 cycles current densities 0.2 0.5 A g −1 capacities 228 177.6 respectively. provides new ideas screening high‐performance ZMBs.

Language: Английский

---

A Nanocluster Colloidal Electrolyte Enables Highly Stable and Reversible Zinc Anodes

Nano Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Aqueous zinc-ion batteries represent a favorable technology for stationary energy storage systems owing to their safety, reliability, and cost-effectiveness. However, Zn anodes suffer uncontrollable dendrite formation harmful side reactions that lead short lifespan. Herein, we demonstrate nanocluster colloidal electrolyte strategy stabilizing the zinc anodes. A copper (CuNC) is screened out validate efficient suppression of messy dendrites reactions. CuNC could resurface zincophilic protective interlayer interfacially steering uniform stripping/plating mitigating corrosion/hydrogen evolution Impressively, enables show high Coulombic efficiency 99.8% over 2100 cycles extended lifespans 2200 1300 h under 0.5 5 mA cm–2, respectively. full cell based on modified exhibits significantly improved cycling durability more than 15 000 cycles. This work will aid in design nanocluser electrolytes with respect stable chemistry beyond.

Language: Английский

---