Abstract Potassium‐ion hybrid capacitors (PIHCs), elaborately integrate the advantages of high output power as well long lifespan supercapacitors and energy density batteries, exhibit great possibilities for future generations storage devices. The critical next step implementation lies in exploring a high‐rate battery‐type anode with an ultra‐stable structure to match capacitor‐type cathode. Herein, “dual‐carbon” is constructed, which three‐dimensional nitrogen‐doped microporous carbon...

Abstract All‐solid‐state lithium metal batteries (ASSLMBs) stand out for the next generation of energy storage system. However, further realization is severely hampered by dendrite formation in solid state electrolytes (SSEs), mechanisms that remain controversial. Herein, with aid experimental and theoretical approaches, origin representative LiBH 4 SSE, which thermodynamically stable Li metal, suppressing side reaction between SSE elucidated. It demonstrated upon diffusion, + encounters an...

Room-temperature sodium–sulfur (RT Na–S) batteries are widely considered as one of the alternative energy-storage systems with low cost and high energy density. However, both poor cycle stability capacity two critical issues arising from conversion kinetics sodium polysulfides (NaPSs) dissolution for sulfur cathodes during charge/discharge process. Herein, we report a highly stable RT Na–S battery cathode via building heterostructures in multichannel carbon fibers. The TiN-TiO2@MCCFs,...

Nitrogen-doped hollow carbon nanospheres exhibit excellent K⁺-storage performances in a half-cell and full cell.

Abstract The room‐temperature sodium–sulfur (RT‐Na/S) battery is one of the most promising technologies for low‐cost energy storage. However, application RT‐Na/S batteries currently impeded by severe shuttle effects and volume expansion that limits both density cycling stability. Herein, first, first‐principal calculation used to find introduction sulfur vacancies in MoS 2 can effectively enhance polysulfide adsorption catalytic ability as well ion electron conductivities. Then, unique 2− x...

The lithium-sulfur battery is currently considered to be a promising candidate for next-generation energy storage devices. However, its commercial application severely restricted by rapid capacity decay mainly arising from unavoidable dissolution of intermediate lithium polysulfide the S-based cathodes. Herein, multifunctional stripped grapheme-carbon nanotubes (SG-CNT) with 1D/2D interwoven and hierarchical pore structure as host stabilize S was constructed cheaper raw materials facile...

Abstract Rechargeable aqueous zinc batteries are promising energy storage devices because of their low cost, high safety, and density. However, performance is plagued by the unsatisfied cyclability due to dendrite growth hydrogen evolution reaction (HER) at Zn anode. Herein, it demonstrated that concentrated hybrid aqueous/non‐aqueous ZnCl 2 electrolytes constitute a peculiar chemical environment for not only Zn‐ions but also water molecules. The concentration chloride ions substitutes H O...

Abstract Boosting the ultralow temperature (below −30 °C) performance of Na‐ion hybrid capacitors (SIHCs), which integrate high energy density batteries with output power and long life supercapacitors, is critical for application advanced electronics in extreme environments. However, their low‐temperature performance, especially fast charging capability, hindered by difficult desolvation slow pass solid electrolyte interphase (SEI) together sluggish diffusion within electrode. Herein, a...

Abstract Room‐temperature sodium–sulfur (RT Na/S) batteries have received increasing attention for the next generation of large‐scale energy storage, yet they are hindered by severe dissolution polysulfides, sluggish redox kinetic, and incomplete conversion sodium polysulfides (NaPSs). Herein, study proposes a dual‐modulating strategy electronic structure electrocatalyst sulfur to accelerate NaPSs. The selenium‐modulated ZnS nanocrystals with electron rearrangement in hierarchical structured...

As the most promising anodic candidate for alkali ion batteries, red phosphorus (P) still faces big challenges, such as poor rate and cycling performance, which are caused by insulative nature large volume change throughout alloy/dealloy process. To ameliorate above issues, traditional way is confining P into carbon host. However, investigations on maximizing utilization inadequate; in other words, how to achieve entire confinement with a high loading amount problem. Additionally,...

Potassium-ion hybrid capacitors (PIHCs) have been considered as promising potentials in mid- to large-scale storage system applications owing their high energy and power density. However, the process involving intercalation of K+ into carbonaceous anode is a sluggish reaction, while adsorption anions onto cathode surface relatively faster, resulting an inability exploit advantage energy. To achieve high-performance PIHC, it critical promote insertion/desertion anodic materials design...

Abstract Ion‐insertion capacitors show promise to bridge the gap between supercapacitors of high power densities and batteries energy densities. While research efforts have primarily focused on Li + ‐based (LICs), Na (SICs) are theoretically cheaper more sustainable. Owing larger size compared , finding high‐rate anode materials for SICs has been challenging. Herein, an SIC architecture is reported consisting TiO 2 nanoparticles anchored a sheared‐carbon nanotubes backbone (TiO /SCNT). The...

Potassium-ion batteries (PIBs) have been considered as potential alternatives for lithium-ion since there is a demand better anode with superior energy, excellent rate capability, and long cyclability. The high-capacity zinc selenide (ZnSe) anode, which combines the merits of conversion alloying reactions, promising PIBs but suffers from poor cyclability low electronic conductivity. To effectively boost electrochemical performance ZnSe, "dual-carbon-confined" structure constructed, in an...

Abstract Hybrid capacitors, which bear the advantages of secondary batteries and supercapacitors, can deliver high power with a relatively fair amount energy. However, its kinetic performance, especially at low temperatures, is strongly limited by battery‐type electrode electrolyte. In this work, Na‐ion, has lower solvation energy than Li‐ion, chosen as charge carrier to build hybrid capacitor. A sodium‐ion capacitor built an activated carbon cathode pre‐sodiated hard anode. To achieve...

Abstract Aqueous sodium‐ion batteries (ASIBs) have recently emerged as a compelling choice for large‐scale energy storage when considering their safe operational characteristics and cost‐effectiveness. Nonetheless, the inadequate electrochemical stability window (ESW) of water (1.23 V) severe dissolution electrodes in aqueous electrolytes proven bottlenecks to enabling high density long lifespan ASIBs. Here, molecular crowding electrolyte is introduced, featuring nonflammable polyethylene...

Flexible polypyrrole (PPy) films with highly ordered structures were fabricated by a novel vapor phase polymerization (VPP) process and used as the anode material in lithium-ion batteries (LIBs) sodium-ion (SIBs). The PPy demonstrate excellent rate performance cycling stability. At charge/discharge of 1 C, reversible capacities film reach 284.9 177.4 mAh g–1 LIBs SIBs, respectively. Even at 20 capacity retains 54.0% 52.9% C After 1000 electrochemical cycles 10 there is no obvious fading....

A nanorod-like NT-LTO/C composite was synthesized by a novel one-pot <italic>in situ</italic> molecular self-assembly technique, which shows ultrahigh rate performance (105.5 mAh g⁻¹ at 100C) and very stable cyclability.

Micro-sized silicon (mSi) anodes offer advantages in cost and tap density over nanosized counterparts. However, its practical application still suffers from poor cyclability low initial later-cycle coulombic efficiency (CE), caused by the unstable solid electrolyte interphase (SEI) irreversible lithiation of surface oxide layer. Herein, a bifunctional fluorine (F)-free was designed for mSi anode to stabilize improve CE. A combined analysis revealed that this can chemically pre-lithiate...

Abstract The practical applications of zinc metal anode are restricted by detrimental dendrite growth and hydrogen evolution reaction (HER), especially at high current densities. Previous works have demonstrated that constructing Zn(002) texture could effectively suppress HER. However, the surface grain distribution commercial remains indistinct. Herein, a simple mechanical grinding approach is to construct (002)‐textured anodes. After grinding, (002) relative coefficient increases from...