Lithium-metal batteries (LMBs) with high energy densities are highly desirable for storage, but generally suffer from dendrite growth and side reactions in liquid electrolytes; thus the need solid electrolytes mechanical strength, ionic conductivity, compatible interface arises. Herein, a thiol-branched polymer electrolyte (SPE) is introduced featuring Li+ conductivity (2.26 × 10-4 S cm-1 at room temperature) good strength (9.4 MPa)/toughness (≈500%), unblocking tradeoff between robustness...

Anionic redox reveals to be a promising strategy effectively improve the energy density of layered metal oxide cathodes for sodium-ion batteries. However, lattice oxygen loss and derived structural distortion severely hinder its practical application. Herein, combined with anionic cationic activities, we developed structure P2-type Na0.66Li0.22Ti0.15Mn0.63O2 cathode, delivering an initial discharge capacity 228 mAh g–1 highly reversible evolution as well improved cyclability. On basis...

Abstract Li‐rich oxides can be regarded as the next‐generation cathode materials for high‐energy‐density Li‐ion batteries since additional oxygen redox activities greatly increase output energy density. However, loss and structural distortion induce low initial coulombic efficiency severe decay of cycle performance, further hindering their industrial applications. Herein, representative layered material, Li 1.2 Ni 0.2 Mn 0.6 O 2 , is endowed with novel single‐crystal morphology. In...

Compared with the polycrystal (PC) Ni-rich cathode materials, single-crystal (SC) counterpart displayed excellent structural stability, high reversible capacity and limited voltage decay during cycling, which received great attention from academics industry. However, origin of fascinating high-voltage stability within SC is poorly understood yet. Herein, we tracked evolution phase transitions, in destructive volume change H3 formation presented PC, are effectively suppressed when cycling at...

Inspired by hydrophobic interface, a novel design of "polysulfide-phobic" interface was proposed and developed to restrain shuttle effect in lithium-sulfur batteries. Two-dimensional VOPO4 sheets with adequate active sites were employed immobilize the polysulfides through formation V-S bond. Moreover, owing intrinsic Coulomb repulsion between polysulfide anions, surface anchored can be further evolved into which demonstrated advanced time/space-resolved operando Raman evidences. In...

Abstract Triggering oxygen‐related activity is demonstrated as a promising strategy to effectively boost energy density of layered cathodes for sodium‐ion batteries. However, irreversible lattice oxygen loss will induce detrimental structure distortion, resulting in voltage decay and cycle degradation. Herein, P2‐type Na 0.66 Li 0.22 Ru 0.78 O 2 cathode designed, delivering reversible Ru‐based redox chemistry simultaneously. Benefiting from the combination strong 4d‐O 2p covalency stable...

Abstract Electrochemical conversion of CO 2 and H O into syngas is an attractive route to utilize green electricity. A competitive system economy demands development cost‐effective electrocatalyst with dual active sites for reduction reaction (CO RR) hydrogen evolution (HER). Here, a single atom derived from metal–organic framework proposed, in which Co atoms N functional groups function as atomic RR HER sites, respectively. The synthesis method based on pyrolysis ZnO@ZIF (zeolitic...

Abstract Li‐rich cathode materials are of significant interest for coupling anionic redox with cationic chemistry to achieve high‐energy‐density batteries. However, lattice oxygen loss and derived structure distortion would induce serious capacity voltage decay, further hindering its practical application. Herein, a novel material, O3‐type Li 0.6 [Li 0.2 Mn 0.8 ]O 2 , is developed the pristine state displaying both excess in transition metal layer deficiency alkali layer. Benefiting from...

Compared with other flexible energy-storage devices, the design and construction of compressible devices face more difficulty because they must accommodate large strain shape deformations. In present work, CoNi2 S4 nanoparticles/3D porous carbon nanotube (CNT) sponge cathode highly property excellent capacitance is prepared by electrodepositing on CNT sponge, in which nanoparticles size among 10-15 nm are uniformly anchored CNT, causing to show a high compression gives specific 1530 F g-1 ....

Abstract Li‐rich and Li‐excess oxides have been regarded as a promising category of cathode materials for next‐generation Li‐ion batteries due to their high energy density on basis anionic/cationic redox chemistry. However, the application suffers from significant problems, such irreversible lattice oxygen loss structural distortion. A Li/Na‐ion exchange strategy can be an effective way address these obstacles by tuning stacking arrangements coordination environment alkali metal within...

Abstract As one typical clean‐energy technologies, lithium‐metal batteries, especially high‐energy‐density batteries which use concentrated electrolytes hold promising prospect for the development of a sustainable world. However, with aggregative configurations were achieved at expense using extra dose costly and environmental‐unfriendly salts/additives, casts shadow over Herein, without any expensive we employed commercially‐available low‐cost environmental‐friendly molecular sieves...

ConspectusLi-rich layered oxides have received extensive attention as promising high-energy-density cathodes for next-generation Li-ion batteries. Different from traditional such LiCoO2, LiFePO4, and Li2MnO4, Li-rich generally can harvest superior discharge capacities exceeding 250 mAh g–1, which originated the contribution of oxygen redox chemistry. However, lattice release irreversible TM transition would induce severe structure distortion capacity degradation well voltage attenuation...

Microcrystalline carbon is the essential constituent unit that constitutes hard material for sodium-ion batteries. However, evolution mechanism of microcrystalline remains controversial, on account diversity biomass composition. Here, we conducted a systematic study evolutionary using lignin and cellulose as models. It was found more readily converted into structures than cellulose. Owing to differences in pyrolysis processes, lignin-derived exhibits isotropic arrangement properties evolves...

Benefiting from anionic and cationic redox reactions, Li-rich materials have been regarded as next-generation cathodes to overcome the bottleneck of energy density. However, they always suffer cracking polycrystalline (PC) secondary particles lattice oxygen release, resulting in severe structural deterioration capacity decay upon cycling. Single-crystal (SC) design has proven an effective strategy relieve these issues traditional with PC morphology. Herein, we first reviewed main synthesis...

C₃N₄ nanosheets/TiO₂ nano-heterostructures have been synthesized <italic>via</italic> a novel method, exhibiting excellent photocatalytic hydrogen generation under visible light irradiation.

Abstract Metal–organic framework (MOF) derived carbonaceous nanocomposites have recently received enormous interest due to their intriguing physiochemical properties and diverse energy applications. However, there is a lack of general synthetic approaches that can achieve flexible dimension control while manipulating metal dispersion MOF carbon composites. Herein, the authors present an attractive route for growth zeolitic imidazolate frameworks (ZIFs) with different dimensions types nodes...

Abstract Typical Li‐rich layered oxides are widely regarded as promising cathode candidates for high‐energy‐density Li‐ion batteries because of additional output capacities boosted by oxygen redox activities. However, its commercialized applications hindered serious capacity loss and voltage decay related to structural degradation upon cycling. Herein, a Co/Ni‐free biphasic O2/O3‐type material is proposed, Li 0.9 [Li 0.3 Mn 0.7 ]O 2 , which has been successfully prepared the + /Na...

The particle size of single-crystal Li-rich materials was accurately regulated, and its impact on the electrochemical behavior compared, which clarified cathode with optimal can improve energy density.

Abstract Phase transformation engineering provides new synthetic opportunities and pathways toward functional materials with desirable phases structures. However, current phase processes are generally time‐consuming or low‐yielding due to the lack of favorable driving forces. Herein, a superfast scalable technique driven by dual chemical equilibrium is developed. Taking manganese hexacyanoferrate (MnHCF) as an example, precipitation–dissolution oxidation‐reduction co‐drive from cubic...

:Lithium-sulfur batteries use lithium as the anode and sulfur cathode, which can achieve a theoretical energy density (2600 Wh.g-1) based on chemical conversion reaction of 6Li + S8 ↔ 8Li2S several times higher than that Li ion The cost effectiveness together with intrinsic high makes Li-S an important option for next generation storage. However, lithium-sulfur using liquid electrolyte lead to dissolution "shuttle effect" polysulfides, greatly reduce cycle life specific capacity battery. In...