Abstract Ambient electrochemical N 2 reduction is emerging as a highly promising alternative to the Haber–Bosch process but typically hampered by high reaction barrier and competing hydrogen evolution, leading an extremely low Faradaic efficiency. Here, we demonstrate that under ambient conditions, single-atom catalyst, iron on nitrogen-doped carbon, could positively shift ammonia synthesis onset potential of 0.193 V, enabling dramatically enhanced efficiency 56.55%. The only doublet...

A new type of amino polar binder with 3D network flexibility structure for high energy Li-S batteries is synthesized and successfully used commercial sulfur powder cathodes. The shows significant performance improvement in capacity retention potential practical application, which arouse the battery community's interest application battery.

Abstract Lithium metal, the ideal anode material for rechargeable batteries, suffers from inherent limitations of sensitivity to humid atmosphere and dendrite growth. Herein, low-cost fabrication a metallic-lithium that is stable in air plated dendrite-free an organic-liquid electrolyte solves four key problems have plagued development large-scale Li-ion batteries storage electric power. Replacing low-capacity carbon with safe, lithium provides fast charge while reducing cost battery,...

Abstract As one of the important ingredients in lithium‐sulfur battery, binders greatly impact battery performance. However, conventional have intrinsic drawbacks such as poor capability absorbing hydrophilic lithium polysulfides, resulting severe capacity decay. This study reports a new type binder by polymerization poly(ethylene glycol) diglycidyl ether with polyethylenimine, which enables strongly anchoring polysulfides for high‐performance sulfur batteries, demonstrating remarkable...

Abstract Covalent organic frameworks with abundant active sites are potential metal-free catalysts for the nitrogen reduction reaction. However, utilization ratio of is restricted in an actual reaction process due to limited transport. Here, we demonstrate that facilitating N 2 accessibility boron-rich covalent through electrochemical excitation can achieve highly efficient activity. Simulations show boron bonded nitrogenous species under condition and resultant amorphous phase has much...

Driven by the intensified demand for energy storage systems with high-power density and safety, all-solid-state zinc-air batteries have drawn extensive attention. However, electrocatalyst active sites underlying mechanisms occurring in remain confusing due to lack of situ analytical techniques. In this work, observations, including X-ray diffraction Raman spectroscopy, a heteroatom-doped carbon air cathode are reported, which chemisorption oxygen molecules oxygen-containing intermediates on...

The fluidity of aqueous electrolytes and undesired H2 evolution reaction (HER) can cause severe interfacial turbulence in Zn metal batteries (ZMBs) at deep cycling with high capacities current densities, which would further perturb ion flux aggravate dendrite growth. In this study, a colloid-polymer electrolyte (CPE) special colloidal phase suppressed HER is designed to diminish boost electrochemistry. Density functional theory calculations confirm that the quantitative migratory barriers...

Abstract Lithium‐ion batteries have attracted much attention in the field like portable devices and electronic vehicles. Due to growing demands of energy storage systems, lithium metal with higher density are promising candidates replace lithium‐ion batteries. However, using excess amounts can lower cause safety risks. To solve these problems, it is crucial use limited amount achieve utilization efficiency lithium, density, safety. The main reasons for loss active side reactions between...

Lithium-metal batteries (LMB) are very attractive owing to their high theoretical energy density, but significant challenges such as low ionic conductivity and safety risks prevent widespread application. Herein, we report a new design of high-safety all-solid-state LMB by using high-ionic-conductivity thermoresponsive solid-polymer electrolyte (TSPE), providing smart active approach realize thermally induced autonomic shutdown LMBs efficiently inhibiting the conduction between electrodes...

Abstract The “shuttle effect” that stems from the dissolution of polysulfides is most fatal issue affecting cycle life lithium‐sulfur (Li–S) batteries. In order to suppress effect,” a new strategy using highly lithium ion conductive fluoride/graphene oxide (LiF/GO) solid electrolyte interphase (SEI) mechanically prevent dendrite breakthrough reported. When utilized in Li–S batteries, LiF/GO SEI coated separator demonstrates significant feature mitigating polysulfide shuttling as observed by...

Lithium (Li) metal, as a promising candidate for next-generation energy storage systems, suffers from an extremely unstable interface that is prone to crack, causing serious corrosion of Li metal and dendrite growth. To address this, novel dual-layered on the anode reported, which featured with organics (COPO3 , (CO)2 PO2 (CO)3 PO) top inorganics (Li3 PO4 ) at bottom. The flexible organic layer reduced Young's modulus (≈550 MPa) contributes maintain structural integrity, while rigid...

Using molecularly imprinted polymer to recognize various target molecules emerges as a fascinating research field. Herein, we applied this strategy for the first time efficiently and trap long-chain polysulfides (Li2Sx, x = 6–8) in lithium sulfur battery minimize polysulfide shuttling between anode cathode, which enables us achieve remarkable electrochemical performance including high specific capacity of 1262 mAh g–1 at 0.2 C superior retention over 82.5% after 400 cycles 1 C. The...

Tissue-engineered nerve grafts (TENGs), typically consisting of a neural scaffold included with support cells and/or growth factors, represent promising alternative to autologous for surgical repair large peripheral gaps. Here, we developed new design TENGs by introducing bone marrow mesenchymal stem (MSCs) rats, as cells, into silk fibroin (SF)-based scaffold, which was composed an SF guidance conduit and oriented filaments the lumen filler. The biomaterial had been tested possess good...

The cancer stem cell theory hypothesizes that cells (CSCs), which possess self-renewal and other properties, are regarded as the cause of tumor formation, recurrence metastasis. isolation identification CSCs could help to develop novel therapeutic strategies specifically targeting CSCs. In this study, we enriched gastric through spheroid body formation by cultivating human line MKN-45 in defined serum-free medium. stemness characteristics body-forming cells, including self-renewal,...

Abstract Peripheral nerve injury is a global problem that causes disability and severe socioeconomic burden. Brain-derived neurotrophic factor (BDNF) benefits peripheral regeneration becomes promising therapeutic molecule. In the current study, we found microRNA-1 (miR-1) directly targeted BDNF by binding to its 3′-UTR caused both mRNA degradation translation suppression of BDNF. Moreover, miR-1 induced primarily through target site 3 rather than 1 or 2 3′-UTR. Following rat sciatic injury,...

High-voltage polymer electrolytes play important roles in achieving high-energy-density electrolyte-based batteries, but the pace of progress moves slowly, since oxidation-resistant at high voltages are rarely obtained. Herein, we reported a nonflammable and high-voltage-tolerated electrolyte (HVTPE) with extended voltage 5.5 V. The obtained HVTPE has lower HOMO energy indicating higher antioxidation ability, which avoids decomposition depletion near cathode. Significantly, HVTPE-based 4.45...

Lithium metal batteries have attracted increasing attention recently due to their particular advantages in energy density. However, as for practical application, the development of solid-state lithium is restricted because poor Li/electrolyte interface, low Li-ion conductivity, and irregular growth Li dendrites. To address above issues, we herein report a high conductivity compatible polymeric interfacial layer by grafting tween-20 on active metal. Sequential oxyethylene groups tween-grafted...