Metal oxides have attracted renewed interest as promising electrode materials for high energy density supercapacitors. However, the electrochemical performance of metal oxide deteriorates significantly with increase mass loading due to their moderate electronic and ionic conductivities. This limits practical energy. Herein, we perform a morphology phase-controlled electrodeposition MnO2 ultrahigh 10 mg cm-2 on carbon cloth substrate achieve overall capacitance without sacrificing...

Realizing fast charging–discharging for high mass loading pseudocapacitive materials has been a great challenge in the field of supercapacitors because sluggish electron and ion migration kinetics through thick electrode materials. Here we demonstrate first time facile hydrothermal treatment that can substantially enhance rate capability highly loaded manganese oxide via Ostwald ripening process. Hydrothermal improves not only electrical conductivity but also diffusion film. At slow scan...

Capacitive performance of polypyrrole-derived carbon nanowires is optimized by tuning the ratio electrical double layer capacitance to pseudocapacitance.

Zn–Ni–Co ternary hydroxide nanoarrays with a controlled morphology are used as the cathode material for supercapacitors first time.

Rechargeable aqueous Zn–MnO2 batteries using a mild electrolyte have attracted considerable interest because of their high output voltage, safety, low cost, and environmental friendliness. However, poor cycling stability remains significant issue for applications. Equally, the energy storage mechanism involved is still controversial thus far. Herein, porous polyfurfural/MnO2 (PFM) nanocomposites are prepared via facile one-step method. When tested in rechargeable cell, PFM deliver specific...

Highly aligned nanoarchitecture arrays directly grown on conducting substrates open up a new direction to accelerate Faradaic reactions for charge storage as well address "dead volume" limitations high-performance pseudocapacitor electrodes. Here we reported the electrochemical fabrication of well-ordered polypyrrole (PPy) nanowire (NWAs) surfaces carbon fibers in an untreated cloth construct hierarchical structures constituted by three-dimensional conductive fiber skeleton and atop...

Supercapacitors (SCs), a new type of green electrochemical energy storage device with high power density and long‐term durability, show great potential to replace nonrenewable sources. Benefiting from both economic environmental advantages, aqueous SCs represent fabulous prospect in many industries. However, the relative low voltage window hinders their further development. In recent years, especially within last five significant achievements ultrahigh (>2.0 V) have been reported. Herein,...

Pancreatic cancer is the fourth most lethal malignancy and characterized by poor immunogenicity. cells have various strategies to suppress host immune response, evade defenses, facilitate tumor growth development. As a mode of long-range intercellular communication, cancer-derived exosomes contribute impairment system. However, mechanisms that induce changes in activities signal transduction pathways cells, which are influenced tumor-derived exosomes, poorly understood. We (1) treated...

Abstract Vanadium trioxide (V 6 O 13 ) cathode has recently aroused intensive interest for aqueous zinc‐ion batteries (AZIBs) due to their structural and electrochemical diversities. However, it undergoes sluggish reaction kinetics significant capacity decay during prolonged cycling. Herein, an oxygen‐vacancy‐reinforced heterojunction in V 13− x /reduced graphene oxide (rGO) is designed through electrostatic assembly annealing strategy. The abundant oxygen vacancies existing weaken the...

In aqueous ammonium-ion storage, hydrogen bonds play a pivotal role in the reversible insertion/extraction of NH 4 + within transition metal oxides/hydroxides. Although fluorine (F) is known for its strong electronegativity and potential to form robust with , specific influence on storage remains unexplored. Herein, we systematically investigate effects F-based bond chemistry layered double hydroxide matrix, where F species are introduced subsequently partially removed via an electrochemical...

Abstract Electrocatalytic nitrogen reduction reaction is a carbon-free and energy-saving strategy for efficient synthesis of ammonia under ambient conditions. Here, we report the nanosized Bi 2 O 3 particles grown on functionalized exfoliated graphene (Bi /FEG) via facile electrochemical deposition method. The obtained free-standing /FEG achieves high Faradaic efficiency 11.2% large NH yield 4.21 ± 0.14 $$ \upmu{\text{g}}_{{{\text{NH}}_{3} }} <mml:math...

Abstract Electrocatalytic N 2 reduction (NRR) has been regarded as a promising approach for environment‐friendly and sustainable ammonia (NH 3 ) synthesis. However, developing cost‐effective electrocatalysts with high NRR efficiency at low overpotential in neutral media remains great challenge. In this paper, freestanding electrocatalyst, BiFeO/FCC, developed by situ growth of bismuth ferrite (Bi 25 FeO 40 on functionalized carbon cloth (FCC), which exhibits activity maximum NH yield 3.88 μg...

Has China’s vigorous economic growth raised its citizens’ happiness? Existing studies have portrayed, if not a pessimistic picture, complicated one. We conducted two to clarify this issue. In Study 1, we used data from available national surveys between 1990 and 2018 (64 samples) demonstrated significant quadratic U-shaped trend rising tendency. 2, cross-temporal meta-analysis 2001 2019 (689 found that Chinese happiness manifested linear trend, although was more salient in the community...

Abstract Aqueous supercapacitors show advantages of high safely, prolonged lifespan, and low cost, etc. but there have never been commercial market products, nor quantitative investigation practical pouch devices aqueous supercapacitors. Herein, to achieve their lab‐scale real‐life manufacture, a unique MoO x for supercapacitor use is constructed by hydrothermal annealing strategy suitable industrialization, which plays three key functions, including precisely adjusted interlayer spacing,...

Abstract Polymer‐intercalated metal oxides have attracted considerable attention for ammonium ions (NH 4 + ) storage due to their enhanced interlayer space, which, through the pillar effect, facilitates rapid and efficient transport of NH . However, understanding remains limited regarding how polymer intercalants affect intrinsic structure host materials, especially variations in atomic orbital electronic structural induced by intercalants. Herein, a polyaniline‐intercalated vanadium oxide...

An ultrahigh loaded MoO_3−x electrode was developed with improved rate capability through incorporating layered structure graphite sheets and oxygen functional groups.

Abstract Intrinsic defects, including oxygen vacancies, can efficiently modify the electrochemical performance of metal oxides. There is, however, a limited understanding how vacancies influence charge storage properties. Here, using tungsten oxide as model system, an extensive study effects structure, electrical properties, and properties is carried out both experimental computational techniques. The results provide direct evidence that increase interlayer spacing in oxide, which suppress...

A facile template-free strategy for versatile synthesis of rationally constructed hollow sphere CeO₂/carbon material composites is reported.