In recent years, tremendous research effort has been aimed at increasing the energy density of supercapacitors without sacrificing high power capability so that they reach levels achieved in batteries and lowering fabrication costs. For this purpose, two important problems have to be solved: first, it is critical develop ways design performance electrode materials for supercapacitors; second, necessary achieve controllably assembled supercapacitor types (such as symmetric capacitors...

This review summarizes recent progress in the design and fabrication of carbon materials for high volumetric performance supercapacitors.

Electric-field-directed growth of single-walled carbon nanotubes by chemical-vapor deposition is demonstrated. The field-alignment effect originates from the high polarizability nanotubes. Large induced dipole moments lead to large aligning torques and forces on nanotube, prevent randomization nanotube orientation thermal fluctuations gas flows. results shall open up possibilities in directed ordered molecular-wire architectures networks surfaces.

We demonstrated the fabrication of functionalized graphene nanosheets via low temperature (300 °C) treatment graphite oxide with a slow heating rate using Mg(OH)2 as template. Because its dented sheet high surface area, certain amount oxygen-containing groups, and pore volume, as-obtained delivers both ultrahigh specific gravimetric volumetric capacitances 456 F g(-1) 470 cm(-3), almost 3.7 times 3.3 higher than hydrazine reduced graphene, respectively. Especially, obtained capacitance is...

A new photothermal coupling agent for ablation (PTA) therapy of tumors is developed based on ultrathin PEGylated W18O49 nanowires. After being injected with the nanowire solution, in vivo exhibit a rapid temperature rise to 50.0 ± 0.5 °C upon irradiation NIR laser light at safe, low intensity (0.72 W cm(-2)) 2 min (left-hand mouse figure),), resulting efficient PTA cancer cells 10 min.

3D pillared-porous carbon nanosheets with supporting pillars between the layers is prepared by carbonization of pitch on porous MgO templates. This unique structure endows high-rate transportation electrolyte ions and electrons throughout electrode matrix, resulting in excellent electrochemical performance. Detailed facts importance to specialist readers are published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted...

A facile approach to synthesize porous disordered carbon layers as energy storage units coating on graphene sheets form interconnected frameworks by one‐step pyrolysis of the mixture oxide/polyaniline and KOH is presented. As effective units, these play an important role in enhancing electrochemical performances. The obtained material exhibits a high specific surface area (2927 m 2 g −1 ), hierarchical pores, moderate pore volume (1.78 cm 3 short ion diffusion paths, nitrogen level (6 at%)....

Copper sulphides, as a novel kind of photothermal agent for therapy (PTT) cancer cells, have attracted increasing attention in recent years due to good photostability, synthetic simplicity, low toxicity and cost. However, the unsatisfactory conversion efficiency copper sulphides limits their bioapplication PTT agents. Herein, Cu7.2S4 NCs with mean size ∼20 nm been prepared by simple thermal decomposition route. Moreover, these exhibit strong near-infrared (NIR) absorption, photostability...

Abstract Molybdenum trioxide (MoO 3 ) has recently aroused intensive interest as a renowned conversion‐type anode of Li‐ion batteries (LIBs). Nevertheless, the inferior rate capability, sluggish reaction kinetics, and fast capacity decay during long‐term charge/discharge process seriously inhibits large‐scale commercial application. Herein, abundant oxygen vacancies MXene nanosheets are elaborately introduced into MoO nanobelts through hydrazine reduction electrostatic assembly to accelerate...

Abstract 2D MXene materials have attracted intensive attention in energy storage application. However, usually undergoes serious face‐to‐face restacking and inferior stability, significantly preventing its further commercial Herein, to suppress the oxidation self‐restacking of MXene, an efficient fast self‐assembly route prepare a 3D porous oxidation‐resistant MXene/graphene (PMG) composite with assistance situ sacrificial metallic zinc template is demonstrated. The self‐assembled...

The semiconductor compounds have been proven to be promising candidates as a new type of photothermal therapy agent, but unsatisfactory conversion efficiencies limit their widespread application in (PTT). Herein, we synthesized cysteine-coated CuS nanoparticles (Cys-CuS NPs) highly efficient PTT agents by simple aqueous solution method. Cys-CuS NPs good biocompatibility owing biocompatible cysteine coating and exhibit strong absorption the near-infrared region due localized surface plasma...

Co9S8, Ni3S2, and reduced graphene oxide (RGO) were combined to construct a composite with two mixed metal sulfide components. Co9S8/RGO/Ni3S2 films hydrothermal-assisted synthesized on nickel foam (NF) by using modified "active substrate" route in which acted as both substrate Ni source for films. It is found that the Co9S8/RGO/Ni3S2/NF electrode exhibits superior capacitive performance high capability (13.53 F cm(-2) at 20 mA cm(-2), i.e., 2611.9 g(-1) 3.9 A g(-1)), excellent rate...

Abstract Copper chalcogenides have been demonstrated to be a promising photothermal agent due their high conversion efficiency, synthetic simplicity, and low cost. However, the hydrophobic less biocompatible characteristics associated with processes hamper widely biological applications. An alternative strategy for improving hydrophilicity biocompatibility is coat copper chalcogenide nanomaterials silica shell. Herein, rational preparation design results in successful coating mesoporous...

Recently, macroporous graphene monoliths (MGMs), with ultralow density and good electrical conductivity, have been considered as excellent pressure sensors due to their elasticity a rapid rate of recovery. However, MGMs can only exhibit sensitivity when the strain is higher than 20%, which undesirable for touch‐type sensors, such artificial skin. Here, an innovative method fabrication freestanding flexible film bubbles decorated on honeycomb‐like network demonstrated. Due switching effect...

An asymmetric supercapacitor with high energy density is designed using flower-like MoS₂ and MnO₂ grown on graphene nanosheets as the negative positive electrodes, respectively. The device exhibits a of 78.9 W h kg⁻¹ at power 284.1 kg⁻¹.

Abstract As a recently emerging group of 2D materials, MXene has attracted extensive attention in the energy storage field recent years owing to their outstanding features. However, notorious issues inevitable oxidation stability and surface‐to‐surface self‐restacking for significantly prevent its further wide‐ranging application. Herein, 3D macroporous oxidation‐resistant Ti 3 C 2 T x MXene/graphene/carbon nanotube (MRC) hybrid hydrogels are prepared by simple gelation method assisted l...

Currently, cathodic photoelectrochemical (PEC) sensors, which could effectively reduce background interference, are urgently required for ultrasensitive environmental monitoring. Herein, porphyrin-based covalent organic framework (TAPP-COF) thin films were fabricated via a bottom-up growth approach on the liquid/liquid interface and applied as photocathode material to "on–off–on" PEC sensing of Pb2+. Benefitting from unique charge channels COFs good photoelectric properties porphyrin,...

Abstract Tin diselenide, a promising anode material for sodium ion batteries (SIBs), still faces sluggish Na + diffusion kinetics and severe volume change, resulting in undesirable cycling stability rate capability. Heterostructure construction is an effective strategy boosting storage of SnSe 2 . Herein, appealing yolk‐shell nanostructure /NiSe heterointerface with rich Se vacancies embedded into N‐doped carbon (SnSe @NC) precisely designed through facile hydrothermal process followed by...