A Two-in-one host for High-loading cathode and Dendrite-free anode realized by activating metallic nitrides heterostructures toward Li-S full batteries

Constructing Ag@SiO2–TiO2 Nanofiber Interlayers with a Three-Dimensional Lithiophilic Gradient Framework for an Ultrastable Lithium Metal Anode

“…With the market requirements for high energy density, long cycling stability, and superior safety of electric devices, traditional lithium-ion batteries are gradually failing to meet the demand. − Li metal batteries are widely valued owing to the high theoretical capacity (3860 mAh g –1 ) and low reduction potential (−3.04 V vs standard hydrogen electrode) of Li metal. , However, the commercial application of Li metal batteries is still impeded by the large volume change of the lithium metal anode, the uncontrollable growth of lithium dendrites, the heterogeneous solid electrolyte interface (SEI) layers during cycling, and the unavoidable consumption of electrolyte, thus leading to the low Coulombic efficiency (CE), rapid degradation of capacity, short lifespan, and even serious safety hazards. − …”

High-Performance Cross-Linked Particle-Like LaNiO3 As a Multifunctional Separator to Significantly Enhance the Redox Kinetics of Lithium–Sulfur Batteries

“…22,23 polar polysulfides and inhibiting the sharp decrease of active materials. This is a shuttle effect, so in recent years, the study of various materials with polar adsorption has gotten more and more in-depth, 24−27 such as oxides, 28−33 sulfides, 34−36 nitrides, 37,38 and borides. 39,40 The polar surfaces of these compounds can more effectively confine polysulfides, while the catalytic effect of O 2− containing metal oxides can more effectively promote the conversion of polysulfides to Li 2 S 2 / Li 2 S, improving the utilization and Coulombic efficiency of active substances.…”

“…In order to solve the above problems, the preparation of carrier materials loaded with active materials is one of the most widely used methods to fix sulfur on the cathode side and improve the utilization of active materials, such as carbon-based materials. − Modifying the surface of a commercial polypropylene separator to use it as an intermediate layer is also an easy and efficient way to improve the performance of the battery, such as coating the separator with carbon material. , Although carbon-based materials are low-priced and have good electrical conductivity, nonpolar carbon-based materials have difficulty having good adsorption capacity for polar polysulfides and inhibiting the sharp decrease of active materials. This is a shuttle effect, so in recent years, the study of various materials with polar adsorption has gotten more and more in-depth, − such as oxides, − sulfides, − nitrides, , and borides. , The polar surfaces of these compounds can more effectively confine polysulfides, while the catalytic effect of O 2– containing metal oxides can more effectively promote the conversion of polysulfides to Li 2 S 2 /Li 2 S, improving the utilization and Coulombic efficiency of active substances. , It is worth noting that when different compounds are used to modify the separator, a certain amount of carbon material is often added to enhance the conductivity of the positive side. − ABO 3 is a perovskite-type oxide in which the A-site is generally a rare earth metal or alkali metal ion occupying a dodecahedral position, and the B-site is generally a transition metal element occupying an octahedral position. , The catalytic activity of this class of oxides is mainly attributed to the transition metal element on the B-site. , In past studies, it has been confirmed that metallic nickel has an excellent catalytic ability for the transformation of polysulfides and that rare earth elements have abundant reserves in China. As the only rare earth nickel-based perovskite compound, LaNiO 3 has excellent conductivity and low resistivity and is widely used in Li–O 2 and Zn–air batteries, , and the spin density of LaNiO 3 determines its superior chemical immobilization and catalytic conversion ability. , …”

Design of a sulfur host with CuCo2O4 supported on carbon cloth for lithium sulfur batteries

“…Recently, transition metal oxides are widely employed as sulfur hosts, due to their high densities and polar characteristics for achieving high volumetric energy density in lithium sulfur batteries. 5 Lu et al designed a sulfur host by introducing nickel oxide nanoparticles into halloysite nanotubes for improving physical adsorption ability of halloysite nanotubes and chemical anchoring of NiO. 6 Moreover, bimetallic oxide (NiCo 2 O 4 ) has been shown to exhibit excellent conductivity due to the mixed valence of Ni 2+ /Ni 3+ and Co 2+ /Co 3+ .…”