Lithium-sulfur (Li-S) batteries are strongly considered as next-generation energy storage systems because of their high density. However, the shuttling lithium polysulfides (LiPS), sluggish reaction kinetics, and uncontrollable Li-dendrite growth severely degrade electrochemical performance Li-S batteries. Herein, a dual-functional flexible free-standing carbon nanofiber conductive framework in situ embedded with TiN-VN heterostructures (TiN-VN@CNFs) an advanced host simultaneously for both...

Abstract Bismuth (Bi) is an attractive material as anodes for both sodium‐ion batteries (NIBs) and potassium‐ion (KIBs), because it has a high theoretical gravimetric capacity (386 mAh g −1 ) volumetric (3800 L ). The main challenges associated with Bi are structural degradation instability of the solid electrolyte interphase (SEI) resulting from huge volume change during charge/discharge. Here, multicore–shell structured Bi@N‐doped carbon (Bi@N‐C) anode designed that addresses these issues....

Constructing 2D heterostructure materials by stacking different can combine the merits of individual building blocks while eliminating their shortcomings. Dichalcogenides are attractive anodes for potassium-ion batteries (KIBs) due to high theoretical capacity. However, practical application dichalcogenide is greatly hampered poor electrochemical performance sluggish kinetics K+ insertion and electrode structure collapse resulting from large insertion. Herein, heterostructures molybdenum on...

Abstract Constructing artificial solid‐electrolyte interphase (SEI) on the surface of Li metal is an effective approach to improve ionic conductivity SEI and buffer dendrite growth anode. However, constructing homogenous ideal still a great challenge. Here, mixed lithium‐ion conductive 2 S/Li Se (denoted as LSSe) protection layer, fabricated by facile inexpensive gas–solid reaction, employed construct stable with high conductivity. The Se‐protected LSSe@Li) exhibits dendrite‐free cycling...

Abstract Conventional strain sensors based on metals and semiconductors are rigid cannot measure soft stretchable objects. Thus, new polymer/nanomaterial composites attracting more interest. Although much effort has been dedicated to achieve high values of both sensitivity stretchability with linearity, this work endeavors search establish guidelines for the development sensors, by critically reviewing conventional examining recent progress. It starts from introducing key parameters sensors;...

Abstract Sodium metal anodes are ideal candidates for advanced high energy density Na batteries. Nevertheless, the unstable solid electrolyte interphase (SEI), uncontrollable dendrite growth, and low Coulombic efficiency during cycling have prevented their applications. Herein, a high‐performance anode is achieved by introduction of an ex situ artificial 3 P layer on surface via simple red phosphorus pretreatment method. The SEI possesses ionic conductivity Young's modulus, which regulates...

Metallic Na (K) are considered a promising anode materials for Na-metal and K-metal batteries because of their high theoretical capacity, low electrode potential, abundant resources. However, the uncontrolled growth dendrites severely damages stability electrode/electrolyte interface, resulting in battery failure. Herein, heterogeneous interface layer consisting metal vanadium nanoparticles sodium sulfide (potassium sulfide) is introduced on surface foil (i.e., Na2 S/V/Na or K2 S/V/K)....

Room-temperature sodium-sulfur (RT Na-S) batteries are highly desirable for a sustainable large-scale energy-storage system due to their high energy density and low cost. Nevertheless, practical applications of RT Na-S still prevented by the shuttle effect sodium polysulfides (NaPS), slow reaction kinetics S, incomplete conversion process NaPS. Here, Mo2 N-W2 N heterostructures embedded in spherical carbon superstructure (Mo2 N@PC) designed efficiently suppress "polysulfide shuttle" promote...

Abstract Beyond‐lithium‐ion storage devices are promising alternatives to lithium‐ion for low‐cost and large‐scale applications. Nowadays, the most of high‐capacity electrodes crystal materials. However, these materials with intrinsic anisotropy feature generally suffer from lattice strain structure pulverization during electrochemical process. Herein, a 2D heterostructure amorphous molybdenum sulfide (MoS 3 ) on reduced graphene surface (denoted as MoS ‐on‐rGO), which exhibits low fast...

Room-temperature (RT) sodium–sulfur (Na-S) systems have been rising stars in new battery technologies beyond the lithium-ion era. This Perspective provides a glimpse at this technology, with an emphasis on discussing its fundamental challenges and strategies that are currently used for optimization. We also aim to systematically correlate functionality of major components RT Na-S batteries, i.e., cathodes, anodes, electrolyte systems, corresponding electrochemistry better understanding...

Room-temperature sodium-sulfur (RT Na-S) batteries, as promising next-generation energy storage candidates, are drawing more and attention due to the high density abundant elements reserved in earth. However, native downsides of RT Na-S batteries (i.e., enormous volume changes, polysulfide shuttle, insulation low reactivity S) impede their further application. To conquer these challenges, hierarchical porous hollow carbon polyhedrons embedded with uniform Mo2 C nanoparticles designed...

Sulfides are perceived as promising anode materials for potassium-ion batteries (PIBs) due to their high theoretical specific capacity and structural diversity. Nonetheless, the poor stability sluggish kinetics of sulfides lead unsatisfactory electrochemical performance. Herein, Ni3 S2 -Co9 S8 heterostructures with an open-ended nanocage structure wrapped by reduced graphene oxide (Ni-Co-S@rGO cages) well designed PIBs via a selective etching one-step sulfuration approach. The hollow...

Carbonate electrolytes have excellent chemical stability and high salt solubility, which are ideally practical choice for achieving high-energy-density sodium (Na) metal battery at room temperature. However, their application ultra-low temperature (-40 °C) is adversely affected by the instability of solid electrolyte interphase (SEI) formed decomposition difficulty desolvation. Here, we designed a novel low-temperature carbonate molecular engineering on solvation structure. The calculations...

The sodium (Na)-metal anode with high theoretical capacity and low cost is promising for construction of high-energy-density metal batteries. However, the unsatisfactory interface between Na liquid electrolyte induces tardy ion transfer kinetics dendritic growth, especially at ultralow temperature (-40 °C). Herein, an artificial heterogeneous interphase consisting disodium selenide (Na2 Se) vanadium (V) produced on surface (Na@Na2 Se/V) via in situ spontaneous chemical reaction. Such layer...

Prussian blue analogues (PBAs) used as sodium ion battery (SIB) cathodes are usually the focus of attention due to their three-dimensional open frame and high theoretical capacity. Nonetheless, disadvantages a low working voltage inferior structural stability PBAs prevent further applications. Herein, we propose constructing Kx(MnFeCoNiCu)[Fe(CN)6] (HE-K-PBA) cathode by high-entropy potassium incorporation strategy simultaneously realize cycling stability. The reaction mechanism metal...

Abstract Complex metal nanoparticles distributed uniformly on supports demonstrate distinctive physicochemical properties and thus attract a wide attention for applications. The commonly used wet chemistry methods display limitations to achieve the nanoparticle structure design uniform dispersion simultaneously. Solid-phase synthesis serves as an interesting strategy which can fabrication of complex supports. Herein, solid-phase is developed precisely synthesize CoFe@FeO x core@shell...

Suppressing the severe water-induced side reactions and uncontrolled dendrite growth of zinc (Zn) metal anodes is crucial for aqueous Zn-metal batteries to achieve ultra-long cyclic lifespans promote their practical applications. Herein, a concept multi-scale (electronic-crystal-geometric) structure design proposed precisely construct hollow amorphous ZnSnO3 cubes (HZTO) optimizing Zn anodes. In situ gas chromatography demonstrates that modified by HZTO (HZTO@Zn) can effectively inhibit...

Abstract The all‐solid‐state lithium–sulfur battery is considered to be a promising energy device due high density and excellent safety. However, sulfur suffers from its insulating nature large volume changes. Employing transition‐metal sulfide cathodes an attractive alternative. Herein, sulfur‐rich MoS 6 ‐based nanocomposite designed, where nanospheres are homogenously anchored on carbon nanotubes (CNTs) by wet‐chemical method, providing improved electronic conductivity reduced In addition,...

Abstract Manganese (Mn)‐based Prussian blue analogs (PBAs) are of great interest as a prospective cathode material for sodium‐ion batteries (SIBs) due to their high redox potential, easy synthesis, and low cost. However, the Jahn–Teller effect electrical conductivity Mn‐based PBA cause poor structure stability unsatisfactory performance during cycling. Herein, novel nickel‐ copper‐codoped K 2 Mn[Fe(CN) 6 ] is developed via simple coprecipitation strategy. The doping elements improve by...

Abstract Rational element doping is demonstrated as an effective strategy to optimize crystal stability and enhance the electronic conductivity of Prussian blue analogs (PBAs) achieve a satisfactory sodium storage performance. However, unraveling dopant selection principles still big challenge. Herein, integrated orbital Hamilton population (ICOHP) function adopted evaluate strength chemical bonds N‐transition metals (N‐TM) guide selection. Among series ICOHP values for N‐TM (TM = Mn, Fe,...

Abstract The utilization of Al current collector for the sodium deposition is considered ideal achieving a low‐cost, high‐energy‐density metal battery. However, poor affinity between and leads to uneven plating/stripping, which poses significant challenge in pursuit stable anode. Herein, heterostructure (V/VO x )‐modified proposed, effectively enables highly reversible Na plating/stripping process, inhibits dendrites growth. Experimental results theoretical calculations demonstrate that V/VO...