The new-generation flexible aqueous zinc-ion batteries require enhanced mechanical properties and ionic conductivities at low temperature for practical applications. This fundamentally means that it is desired the hydrogel electrolyte possesses antifreezing merits to resist flexibility loss performance decrease subzero temperatures. Herein, a highly polysaccharide realized in situ regulated through Hofmeister effect with low-concentration Zn(ClO4 )2 salts satisfy abovementioned requirements....

Abstract This work studies for the first time metallic 1T MoS 2 sandwich grown on graphene tube as a freestanding intercalation anode promising sodium‐ion batteries (SIBs). Sodium is earth‐abundant and readily accessible. Compared to lithium, main challenge of its sluggish ion diffusion kinetic. The freestanding, porous, hollow structure electrode allows maximum electrolyte accessibility benefit transportation Na + ions. Meanwhile, provides excellent electron conductivity. obtained exhibits...

Batteries constructed via 3D printing techniques have inherent advantages including opportunities for miniaturization, autonomous shaping, and controllable structural prototyping. However, 3D-printed lithium metal batteries (LMBs) not yet been reported due to the difficulties of (Li) metal. Here, first time, high-performance LMBs are fabricated through a technique using cellulose nanofiber (CNF), which is one most earth-abundant biopolymers. The unique shear thinning properties CNF gel...

Abstract Aqueous Zn‐ion batteries own great potential on next generation wearable due to the high safety and low cost. However, uncontrollable dendrites growth negligible subzero temperature performance impede practical applications. Herein, it is demonstrated that dimethyl sulfoxide (DMSO) an effective additive in ZnSO 4 electrolyte for side reactions suppression by regulating solvation structure inducing Zn 2+ form more electrochemical stable (002) basal plane, via higher absorption energy...

Zinc (Zn) metal anode has been widely evaluated in aqueous Zn batteries. Nevertheless, the dendrite formation issue and consecutive side reactions severely impede practical applications of at high current densities. Herein, it is reported that engineering gel electrolyte with multifunctional charged groups by incorporating a zwitterionic poly(3-(1-vinyl-3-imidazolio) propanesulfonate) (PVIPS) can effectively address abovementioned issues. The sulfonate imidazole texture

Abstract Metallic phase molybdenum disulfide (MoS 2 ) is well known for orders of magnitude higher conductivity than 2H semiconducting MoS . Herein, the first time, authors design and fabricate a novel porous nanotube assembled with vertically aligned metallic nanosheets by using scalable solvothermal method. This has following advantages: (i) intrinsic high electrical that promotes rate performance battery eliminates conductive additive; (ii) hierarchical, hollow, porous, structure assists...

A Zr 4+ crosslinked hydrogel electrolyte is demonstrated on side reaction resistance for high-performance aqueous Zn-based devices.

Advanced aqueous batteries are promising for next generation flexible devices owing to the high safety, yet still requiring better cycling stability and capacities in wide temperature range. Herein, a polymeric acid hydrogel electrolyte (PAGE) with 3 M Zn(ClO4 )2 was fabricated performance Zn/polyaniline (PANI) batteries. With PAGE, even at -35 °C Zn/Zn symmetrical battery can keep stable more than 1 500 h under 2 mA cm-2 , Zn/PANI provide ultra-high specific capacity of 79.6 mAh g-1 70 000...

Polymer binders have been shown to efficiently conquer the notorious lithium polysulfide (LiPS) shuttle effects in lithium-sulfur (Li-S) batteries for years, but more study is needed. Herein, a water dispersible and molecular interaction regulated polymer binder (PNAVS) Li-S was elaborately designed by co-polymerizing N-acryloyl glycinamide 3-(1-vinyl-3-imidazolio)propanesulfonate. We demonstrate that modulating multiple interactions between functional groups through copolymerization able...

The parasitic side reaction on Zn anode is the key issue which hinders development of aqueous Zn-based energy storage systems power-grid applications. Here, a polymer additive (PMCNA) engineered by copolymerizing 2-methacryloyloxyethyl phosphorylcholine (MPC) and N-acryloyl glycinamide (NAGA) was employed to regulate deposition environment for satisfying inhibition performance during long-term cycling with high utilization. PMCNA can preferentially adsorb metal surface form uniform...

Aqueous zinc (Zn) ion batteries are attractive for next generation with high safety, yet their applications still hindered by the uncontrollable dendrite formation and side reactions on Zn anode. Here, a polyzwitterion protective layer (PZIL) was engineered polymerizing 2-methacryloyloxyethyl phosphorylcholine (MPC) in carboxymethyl chitosan (CMCS), which renders following merits: choline groups of MPC can preferentially adsorb onto metal to avoid reactions; charged phosphate chelate Zn2+...

The new-generation lithium metal batteries require polymer electrolytes with high ionic conductivity and mechanical properties. However, the performance of is severely influenced by bond formation between functional groups ions (Li+), which has barely been considered in past. Herein, a enriched gel (PAEV) elaborately designed copolymerizing 4-acryloylmorpholine (ACMO) 1-vinyl-3-ethyl imidazolium bis(trifluoromethylsulfonyl)imide ([VEIM][TFSI]) 1-ethyl-3-methyl ([EMIM][TFSI]) presence LiFSI....

The practical applications for aqueous Zn ion batteries (ZIBs) are promising yet still impeded by the severe side reactions on metal. Here, a lysozyme protective layer (LPL) is prepared metal surface simple and facile self-adsorption strategy. LPL exhibits extremely strong adhesion to provide stable interface during long-term cycling. In addition, strategy triggered hydrophobicity-induced aggregation effect endows with gap-free compacted morphology which can reject free water effective...

Abstract Three-dimensional superlattices consisting of nanoparticles represent a new class condensed materials with collective properties arising from coupling interactions between close-packed nanoparticles. Despite recent advances in self-assembly nanoparticle superlattices, the constituent have been limited to those that are attainable as monodisperse In addition, self-assembled generally weakly coupled due surface-coating ligands. Here we report fabrication three-dimensionally...

Lithium (Li) metal anodes have attracted much interest recently for high-energy battery applications. However, low coulombic efficiency, infinite volume change, and severe dendrite formation limit their reliable implementation over a wide range. Here, an outstanding stability Li anode is revealed by designing highly porous hollow foam. This unique structure capable of tackling many problems simultaneously: first, it assures uniform electrolyte distribution the inner outer electrode's...

Abstract While great progress has been achieved in the synthesis of ordered mesoporous carbons past decade, it still remains a challenge to prepare highly graphitic frameworks with mesoporosity and high surface area. Reported herein is simple synthetic methodology, based on conversion self‐assembled superlattices Fe 3 O 4 nanocrystals, fabricate graphene (MGFs) ultrathin pore walls consisting three six stacking layers. The MGFs possess face‐centered‐cubic symmetry interconnected...

Thermally insulating materials, made from earth-abundant and sustainable resources, are highly desirable in the construction of energy efficient buildings.

The ability to remove long, insulating ligands from nanocrystal (NC) surfaces without deteriorating the structural integrity of NC films is critical realizing their electronic and optoelectronic applications. Here we report a nondestructive ligand-exchange approach based on in situ chemical treatment NCs floating at liquid-air interface, enabling strongly coupled superlattice that can be directly transferred arbitrary substrates for device Ligand-exchange-induced defects such as cracks...

Abstract Advanced aqueous batteries are promising for next generation flexible devices owing to the high safety, yet still requiring better cycling stability and capacities in wide temperature range. Herein, a polymeric acid hydrogel electrolyte (PAGE) with 3 M Zn(ClO 4 ) 2 was fabricated performance Zn/polyaniline (PANI) batteries. With PAGE, even at −35 °C Zn/Zn symmetrical battery can keep stable more than 1 500 h under mA cm −2 , Zn/PANI provide ultra‐high specific capacity of 79.6 mAh g...

Abstract Lithium (Li) metal anodes are considered as the holy grail of rechargeable Li batteries. However, practical utilization is challenging because dendrite formation issue and drastic volume expansion. Herein, for first time, through incorporation thermally conductive material boron nitride (BN), anode stabilized by improving heat dissipation charge transfer in a holey layered structure. Ligninsulfonate, due to its amphiphilicity, used situ exfoliate bulky BN into nanosheets. Through...

A novel renewable cathode made from earth abundant, low-cost materials can contribute to the intermittent storage needs of energy-based society. In this work, we report for first-time tannin Nature as a material. Our approach exploits charge mechanism redox active quinone moiety. Tannins extracted tree bark using environmental friendly aqueous solvents have highest phenol content (5.56 mol g-1) among all natural phenolic biopolymers, 5000 times higher than lignin. coupled with conductive...

Abstract Controlling the iridescent photonic film generated by self‐assembly of colorless cellulose nanocrystal (CNC) from nanoscale to macroscale is challenging. This study combines experimental and computational approaches systematically investigate correlation between electrostatic interactions chiral nematic structures. The order CNC colloidal preserved in solid films after evaporation water. cross‐sections show a clear left‐handed helical arrangement nanocrystals. structure with aid...