Stable Zinc Electrode/Separator Interface Enabled by Phthalocyanine-Modified Separator for Advanced Zinc Metal Batteries.

Aqueous zinc (Zn) metal batteries (ZMBs) have received extensive attention as potential energy storage systems due to their inherent safety and low cost. However, the practical applications of ZMBs have been hindered by parasitic side reactions and Zn dendrite formation, undermining the efficiency of Zn anodes. With continuous research on the interfacial chemistry in ZMBs, increasing research interest is begun to focus on achieving dendrite-free Zn electrodeposition by constructing a stable separator/electrode interface.

Surface Patterning of Metal Zinc Electrode with an In-Region Zincophilic Interface for High-Rate and Long-Cycle-Life Zinc Metal Anode.

The undesirable dendrite growth induced by non-planar zinc (Zn) deposition and low Coulombic efficiency resulting from severe side reactions have been long-standing challenges for metallic Zn anodes and substantially impede the practical application of rechargeable aqueous Zn metal batteries (ZMBs). Herein, we present a strategy for achieving a high-rate and long-cycle-life Zn metal anode by patterning Zn foil surfaces and endowing a Zn-Indium (Zn-In) interface in the microchannels. The accumulation of electrons in the microchannel and the zincophilicity of the Zn-In interface promote preferential heteroepitaxial Zn deposition in the microchannel region and enhance the tolerance of the electrode at high current densities.

Cross-linked amorphous potassium titanate Nanobelts/Titanium carbide MXene nanoarchitectonics for efficient sodium storage at low temperature.

One of the major challenges to improving the performance of sodium-ion batteries at low temperatures is to develop effective anode materials with novel structures and fast reaction kinetics. Currently, converting electrode materials from the crystalline to amorphous state is an effective approach to fabricate the electrode material with high sodium storage performance. Herein, a three-dimensional (3D) cross-linked heterostructure with one-dimensional (1D) amorphous potassium titanate (KTiO) nanobelts in-situ grown on two-dimensional (2D) titanium carbide (TiCT) nanosheets (a-KTiO/TiCT) was fabricated through alkalization of the multilayered TiCT MXene, which exhibits remarkable sodium storage performance at both room and low temperatures.

Sodium titanium phosphate nanocube decorated on tablet-like carbon for robust sodium storage performance at low temperature.

Sodium-ion batteries, featuring resource abundance and similar working mechanisms to lithium-ion batteries, have gained extensive interest in both scientific exploration and industrial applications. However, the extremely sluggish reaction kinetics of charge carrier (Na) at subzero temperatures significantly reduces their specific capacities and cycling life. Herein, this study presents a novel hybrid structure with sodium titanium phosphate (NaTi(PO), NTP) nanocube in-situ decorated on tablet-like carbon (NTP/C), which manifests superior sodium storage performances at low temperatures.

Crosslinking Nanoarchitectonics of Nitrogen-doped Carbon/MoS Nanosheets/Ti C T MXene Hybrids for Highly Reversible Sodium Storage.

Although it is a promising sodium storage material due to its excellent electrochemical activity, small bandgap, and large interlayer spacing, layered molybdenum disulfide (MoS ) suffers from poor rate capability and degraded cycling life, resulting from its serious aggregation upon preparation, sluggish reaction kinetics, and structure expansion during cycling. To address these issues, a polyethyleneimine (PEI)-assisted fabrication approach was developed for the rational synthesis of an interconnected framework with nitrogen-doped carbon-confined MoS nanosheets/Ti C T MXene (MoS /Ti C T @NC), where the PEI could guide the uniform growth of MoS on Ti C T and the self-generated NC simultaneously enhanced its synergistic coupling with MoS /Ti C T , thus contributing to the improvement of charge transfer, diffusion kinetics, and structural integrity of the hybrid electrode. Consequently, the desired MoS /Ti C T @NC delivered impressive sodium storage performance, demonstrating high reversible capacities of 397.

Boosting the lithium storage performance by synergistically coupling ultrafine heazlewoodite nanoparticle with N, S co-doped carbon.

Transition metal sulfides, as an important class of inorganics, have been shown to be potential high-performance electrode candidates for lithium-ion batteries (LIBs) in account of their high activity towards lithium storage, rich types and diverse structures. Despite these advantages, structure degradation related with volume variations upon electrochemical cycling restricts their further development. In this present study, a unique hybrid structure with ultrafine heazlewoodite nanoparticles (less than 10 nm) in-situ confined in nitrogen and sulfur dual-doped carbon (NiS@NSC) was constructed though a facile pyrolysis process, using a novel Ni-based metal chelates as the precursor.