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A low crystal mismatch strategy to fabricate novel LiFePO4 nanomeshes is presented by Y. Wang and co‐workers on page 516. The LiFePO4 nanomesh is characterized by numerous advantages, such as mesoporous structure, enhanced structural integrity, and a shortened Li ion diffusion pathway along the [010] direction. Furthermore, the obtained LiFePO4 nanomesh can be applied in lithium ion batteries as an...
A novel LiFePO4 material, in the shape of a nanomesh, has been rationally designed and synthesized based on the low crystal‐mismatch strategy. The LiFePO4 nanomesh possesses several advantages in morphology and crystal structure, including a mesoporous structure, its crystal orientation that is along the [010] direction, and a shortened Li‐ion diffusion path. These properties are favorable for their...
Tin‐based electrodes offer high theoretical capacities in lithium ion batteries, but further commercialization is strongly hindered by the poor cycling stability. An in situ reduction method is developed to synthesize SnO2 quantum dots@graphene oxide. This approach is achieved by the oxidation of Sn2+ and the reduction of the graphene oxide. At 2 A g−1, a capacity retention of 86% is obtained even...
A freestanding SnO2@N‐CNF film prepared by electrospinning exhibits excellent flexibility and a high surface area of 506 m2 g−1. When used as an anode for lithium‐ion batteries, a high reversible capacity of 754 mAh g−1 is maintained after the 300th cycle at 1 A g−1. Even when the current density increases to 5 A g−1, the SnO2@N‐CNF still delivers 245.9 mAh g−1.
Novel electrode materials consisting of hollow cobalt sulfide nanoparticles embedded in graphitic carbon nanocages (HCSP⊂GCC) are facilely synthesized by a top‐down route applying room‐temperature synthesized Co‐based zeolitic imidazolate framework (ZIF‐67) as the template. Owing to the good mechanical flexibility and pronounced structure stability of carbon nanocages‐encapsulated Co9S8, the as‐obtained...
Hierarchically porous carbons are attracting tremendous attention in sustainable energy systems, such as lithium ion battery (LIB) and fuel cell, due to their excellent transport properties that arise from the high surface area and rich porosity. The state‐of‐the‐art approaches for synthesizing hierarchically porous carbons normally require chemical‐ and/or template‐assisted activation techniques,...
In article number 1603490, Qingyu Yan, Hongwei Gu, and co‐workers synthesize uniform sized Co9S8/MoS2 yolk‐shell spheres with an average diameter of about 500 nm by a facile route. The synergetic effect between these two phases allows fast electron and Li/Na ions transportation kinetics. When evaluated as anodes for LIBs/SIBs, these Co9S8/MoS2 yolk‐shell spheres show high specific capacities, excellent...
Uniform sized Co9S8/MoS2 yolk–shell spheres with an average diameter of about 500 nm have been synthesized by a facile route. When evaluated as anodes for lithium‐ion and sodium‐ion batteries, these Co9S8/MoS2 yolk–shell spheres show high specific capacities, excellent rate capabilities, and good cycling stability.
A self‐templated strategy is developed to fabricate hierarchical TiO2/SnO2 hollow spheres coated with graphitized carbon (HTSO/GC‐HSs) by combined sol–gel processes with hydrothermal treatment and calcination. The as‐prepared mesoporous HTSO/GC‐HSs present an approximate yolk‐double–shell structure, with high specific area and small nanocrystals of TiO2 and SnO2, and thus exhibit superior electrochemical...
1D branched TiO2 nanomaterials play a significant role in efficient photocatalysis and high‐performance lithium ion batteries. In contrast to the typical methods which generally have to employ epitaxial growth, the direct in situ growth of hierarchically branched TiO2 nanofibers by a combination of the electrospinning technique and the alkali‐hydrothermal process is presented in this work. Such the...
In article 1702357, Shengjie Peng, Wei Yan, and co‐workers present direct in situ growth of hierarchically branched TiO2 nanofibers by a combination of an electrospinning technique and an alkali‐hydrothermal process. The branched nanofibers have a unique morphology and can be used in both photocatalytic H2 generation from waste splitting, and as an anode in Li–ion batteries, where they exhibit electrochemical...
Layered lithium transition‐metal oxides, with large capacity and high discharge platform, are promising cathode materials for Li‐ion batteries. However, their high‐rate cycling stability still remains a large challenge. Herein, hierarchical LiNi1/3Co1/3Mn1/3O2 polyhedron assemblies are obtained through in situ chelation of transition metal ions (Ni2+, Co2+, and Mn2+) with amide groups uniformly distributed...
In article number 1800793, Jun Liu, Renzong Hu, and co‐workers report the synthesis of an advanced integrated anode of self‐supported FeP@C nanotube arrays grown on carbon fabric for Li‐ion batteries, through a facile template‐based deposition and phosphorization route. Because of the unique architectural design, this flexible FeP@C anode exhibits ultrastable cycling ability and excellent rate capability...
An anode of self‐supported FeP@C nanotube arrays on carbon fabric (CF) is successfully fabricated via a facile template‐based deposition and phosphorization route: first, well‐aligned FeOOH nanotube arrays are simply obtained via a solution deposition and in situ etching route with hydrothermally crystallized (Co,Ni)(CO3)0.5OH nanowire arrays as the template; subsequently, these uniform FeOOH nanotube...
The ingenious design of a freestanding flexible electrode brings the possibility for power sources in emerging wearable electronic devices. Here, reduced graphene oxide (rGO) wraps carbon nanotubes (CNTs) and rGO tightly surrounded by MnO2 nanosheets, forming a 3D multilevel porous conductive structure via vacuum freeze‐drying. The sandwich‐like architecture possesses multiple functions as a flexible...
Multicomponent materials with various double cations have been studied as anode materials of lithium‐ion batteries (LIBs). Heterostructures formed by coupling different‐bandgap nanocrystals enhance the surface reaction kinetics and facilitate charge transport because of the internal electric field at the heterointerface. Accordingly, metal selenites can be considered efficient anode materials of LIBs...
Increasing awareness toward environmental remediation and renewable energy has led to a vigorous demand for exploring a win‐win strategy to realize the eco‐efficient conversion of pollutants (“trash”) into energy‐storage nanomaterials (“treasure”). Inspired by the biological metabolism of bacteria, Acidithiobacillus ferrooxidans (A. ferrooxidans) is successfully exploited as a promising eco‐friendly...
Controlling the arrangement and interface of nanoparticles is essential to achieve good transfer of charge, heat, or mechanical load. This is particularly challenging in systems requiring hybrid nanoparticle mixtures such as combinations of organic and inorganic materials. This work presents a process to coat vertically aligned carbon nanotube (CNT) forests with metal oxide nanoparticles using microwave‐assisted...
In article number 1901201, Michael De Volder and co‐workers fabricate the honeycomb structure shown in this scanning electron microscopy image by capillary self‐organization of carbon nanotubes. These honeycombs are coated with metal oxides using hydrothermal processing and are used as a 3D current collector for Li‐ion batteries.
Mn2O3 is a promising anode material for lithium‐ion batteries (LIBs) because of its high theoretical capacity and low discharge potential. However, low electronic conductivity and capacity fading limits its practical application. In this work, Mn2O3 with 1D nanowire geometry is synthesized in neutral aqueous solutions by a facile and effective hydrothermal strategy for the first time, and then Mn2...
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