Abstract With the increasing demand for efficient and economic energy storage, Li‐S batteries have become attractive candidates next‐generation high‐energy rechargeable Li because of their high theoretical density cost effectiveness. Starting from a brief history batteries, this Review introduces electrochemistry discusses issues resulting electrochemistry, such as electroactivity polysulfide dissolution. To address these critical issues, recent advances in are summarized, including S...

Abstract One of the greatest challenges for our society is providing powerful electrochemical energy conversion and storage devices. Rechargeable lithium‐ion batteries fuel cells are amongst most promising candidates in terms densities power densities. Nanostructured materials currently interest such devices because their high surface area, novel size effects, significantly enhanced kinetics, so on. This Progress Report describes some recent developments nanostructured anode cathode...

The lithium-sulfur battery holds a high theoretical energy density, 4-5 times that of today's lithium-ion batteries, yet its applications have been hindered by poor electronic conductivity the sulfur cathode and, most importantly, rapid fading capacity due to formation soluble polysulfide intermediates (Li(2)S(n), n = 4-8). Despite numerous efforts concerning this issue, combatting loss remains one greatest challenges. Here we show problem can be effectively diminished controlling as smaller...

Abstract Lithium metal is one of the most attractive anode materials for electrochemical energy storage. However, growth Li dendrites during deposition, which leads to a low Coulombic efficiency and safety concerns, has long hindered application rechargeable Li-metal batteries. Here we show that 3D current collector with submicron skeleton high electroactive surface area can significantly improve deposition behaviour Li. accommodated in structure without uncontrollable dendrites. With being...

A Li3PO4 solid electrolyte interphase (SEI) layer is demonstrated to be stable in the organic electrolyte, even during Li deposition/dissolution process. Thus, Li-conducting SEI with a high Young's modulus can effectively reduce side reactions between metal and restrain dendrite growth lithium-metal batteries cycling.

Abstract Carbon‐coated Fe 3 O 4 nanospindles are synthesized by partial reduction of monodispersed hematite with carbon coatings, and investigated scanning electron microscopy, transmission X‐ray diffraction, electrochemical experiments. The C show high reversible capacity (∼745 mA h g −1 at C/5 ∼600 C/2), coulombic efficiency in the first cycle, as well significantly enhanced cycling performance rate capability compared bare spindles commercial magnetite particles. improvements can be...

Hybrid anode materials for Li-ion batteries are fabricated by binding SnO2 nanocrystals (NCs) in nitrogen-doped reduced graphene oxide (N-RGO) sheets means of an situ hydrazine monohydrate vapor reduction method. The NCs the obtained SnO2[email protected] hybrid material exhibit exceptionally high specific capacity and rate capability. Bonds formed between limit aggregation Sn nanoparticles, leading to a stable with long cycle life. As service our authors readers, this journal provides...

A new approach was designed to synthesize tin-nanoparticles encapsulated in elastic hollow carbon spheres (TNHCs) with uniform size, which tin nanoparticles a diameter <100 nm were one thin sphere. The content of is up over 70% by weight, andthe void volume inside the TNHCsis as high 70–80%, can accommodate after expansion. This tin-based nanocomposite exhibits great potential an anode materials for lithium-ion batteries.

High-quality Prussian blue crystals with a small number of vacancies and low water content show high specific capacity remarkable cycle stability as cathode materials for Na-ion batteries.

Nanometer-sized rutile shows much higher electroactivity towards Li insertion than micrometer-sized rutile. Up to 0.8 mol of per mole TiO2 can be inserted into nanometer-sized at room temperature (see figure), which is able reversibly accommodate up Li0.5TiO2 with excellent capacity retention and high rate capability on cycling, rendering it a promising anode material for high-power lithium-ion batteries.

Abstract The increasing demand for replacing conventional fossil fuels with clean energy or economical and sustainable storage drives better battery research today. Sodium‐ion batteries (SIBs) are considered as a promising alternative grid‐scale applications due to their similar “rocking‐chair” sodium mechanism lithium‐ion batteries, the natural abundance, low cost of Na resources. Searching appropriate electrode materials acceptable electrochemical performance is key point development SIBs....

A facile large-scale preparation of Pt hollow nanospheres (see TEM image) makes use Co nanoparticle as sacrificial templates. The exhibit enhanced electrocatalytic activity. This method has been extended to the fabrication industrially potentially useful Au, Pd, and other mono- multimetallic nanospheres. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2004/z52956_s.pdf or from author. Please note: publisher not responsible content...

An optimized nanostructure design for high-power, high-energy lithium-ion batteries and supercapacitors is realized by fabricating a nanocomposite with highly dispersed nanoparticles of active materials in nanoporous carbon matrix. A nano-LiFePO4 /nanoporous matrix forms bridge between supercapacitor battery electrode offers reasonable compromise rate capacity.

Lithium (Li) metal is a promising anode material for high-energy density batteries. However, the unstable and static solid electrolyte interphase (SEI) can be destroyed by dynamic Li plating/stripping behavior on surface, leading to side reactions dendrites growth. Herein, we design smart polyacrylic acid (LiPAA) SEI layer high elasticity address processes self-adapting interface regulation, which demonstrated in situ AFM. With binding ability excellent stability of LiPAA polymer,...

Abstract Single‐, double‐, and triple‐shelled hollow spheres assembled by Co 3 O 4 nanosheets are successfully synthesized through a novel method. The possible formation mechanism of these structures was investigated using powder X‐ray diffraction, scanning transmission electron microscopies, Fourier transform IR, photoelectron spectroscopy, thermogravimetric analysis. Both poly(vinylpyrrolidone) (PVP) soft templates the cobalt glycolate play key roles in multishelled structures. When tested...

Self-assembly of hexagonal 3–5-nm ZnS nanocrystals can be used for the large-scale production zinc sulfide nanoporous nanoparticles (NPNPs). The uniform, spherical NPNPs are monodisperse and have surface areas on order 156 m2 g−1. more effective photocatalysts than Degussa P25 titania or in photodegradation eosin B at ambient temperature (see picture). Supporting information this article is available WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z462057_s.pdf from author. Please...

Well-defined Li(4)Ti(5)O(12) nanosheets terminated with rutile-TiO(2) at the edges were synthesized by a facile solution-based method and revealed directly atomic resolution an advanced spherical aberration imaging technique. The show much improved rate capability specific capacity compared pure when used as anode materials for lithium ion batteries. results here give clear evidence of utility carbon-free coating layer to improve kinetics toward fast insertion/extraction. nanocoating is...

A dual protection strategy is proposed to improve the properties of densely compacted Si/C anodes by designing hierarchical buffer structure and optimizing size distribution. The exhibit exceptional cycling stability rate capability at high mass loading pressing density. satisfactory performance scalable process facilitate practical applications materials in high-energy density lithium-ion batteries. As a service our authors readers, this journal provides supporting information supplied...

An integrated preparation of safety‐reinforced poly(propylene carbonate)‐based all‐solid polymer electrolyte is shown to be applicable ambient‐temperature solid lithium batteries. In contrast pristine poly(ethylene oxide) electrolyte, this exhibits higher ionic conductivity, wider electrochemical window, better mechanical strength, and superior rate performance at 20 °C. Moreover, iron phosphate/lithium cell using such can charge discharge even 120 It also noted that the solid‐state...

An optimized nanostructure design of electrode material for high power, energy lithium batteries is realized. Highly Li-permeable materials are obtained by introducing hierarchical mixed conducting networks on both nanoscale and microscale levels (see figure). A mesoporous TiO2:RuO2 composite selected as an example this new design.

Employing small sulfur molecules as the active cathode component for room-temperature Na-S batteries, reveals a novel mechanism that is verified batteries' electrochemistry. The enables complete two-electron reaction to form Na2 S, bringing tripled specific capacity and an increased energy compared with traditional high-temperature batteries. At same time, it offers better cycling stability endowing batteries longer lifespan. As service our authors readers, this journal provides supporting...

The Li metal anode has long been considered as one of the most ideal anodes due to its high energy density. However, safety concerns, low efficiency, and huge volume change are severe hurdles practical application anodes, especially in case areal capacity. Here it is shown that graphitized carbon fibers (GCF) electrode can serve a multifunctional 3D current collector enhance storage GCF store amount via intercalation electrodeposition reactions. as‐obtained deliver an capacity 8 mA h cm −2...

Room-temperature sodium-ion batteries (SIBs) have shown great promise in grid-scale energy storage, portable electronics, and electric vehicles because of the abundance low-cost sodium. Sodium-based layered oxides with a P2-type framework been considered as one most promising cathode materials for SIBs. However, they suffer from undesired P2-O2 phase transition, which leads to rapid capacity decay limited reversible capacities. Herein, we show that this problem can be significantly mitigated...