Rational design of dual-ion doped cobalt-free Li-rich cathode materials for enhanced cycle stability of lithium-ion pouch cell batteries.

The synergistic effect of single-crystal structure and dual doping in Li-rich cobalt-free cathode materials was thoroughly investigated. Lithium-ion pouch cells employing Sb/Sn doped LiMnNiO and graphite exhibited a specific capacity of 191.01 mA h g at 1C rate and exceptionally stable performance upon cycling, with capacity retention of 87.

Super-compressible and mechanically stable reduced graphene oxide aerogel for wearable functional devices.

The graphene-based aerogels with good electrical conductivity and compressibility have been reported. However, it is challenging to fabricate the graphene aerogel to have excellent mechanical stability for its application in wearable devices. Thus, inspired by macroscale arch-shaped elastic structures and the importance of crosslinking in microstructural stability, we synthesized the mechanically stable reduced graphene oxide aerogels with small elastic modulus by optimizing the reducing agent to make the aligned wrinkled microstructure in which physical crosslinking is dominant.

Wireless Hand-Held Device Based on Polylactic Acid-Protected, Highly Stable, CTAB-Functionalized Phosphorene for CO Gas Sensing.

Phosphorene is a novel two-dimensional (2D) material with exceptional properties and is connecting the gaps between graphene and transition-metal chalcogenides but having environmental instability. In this study, we present effective liquid exfoliation of few-layer phosphorene (FLP) from bulk black phosphorous (BP) in the presence of cetyltrimethylammonium bromide (CTAB), a cationic surfactant that is highly stable. It successfully stabilizes FLP in deionized water, which is consistent with obtained characterization and gas-sensing studies.

Fabrication of flexible La-MoS hybrid-heterostructure based sensor for NO gas sensing at room temperature.

Transition metal dichalcogenides (TMDs) materials are from the two-dimensional (2D) materials family and have many benefits, comprising high carrier mobility and conductivity, high optical transparency, outstanding mechanical flexibility, and chemical stability, and are also favorable gas sensing materials because of their high surface-area-to-volume ratio. Nevertheless, their low gas-sensing performance in terms of low response, partial recovery, and poor selectivity obstruct the apprehension as high-performance 2D TMDs gas sensing materials. At this time, we explain the enhancement in gas-sensing performance of molybdenum disulfide (MoS) nanoflakes (NF) by decorating with Lanthanum (La) at room temperature (25 °C).

Ruthenium-decorated tungsten disulfide quantum dots for a CO gas sensor.

In this work, a selective chemiresistive gas sensor for carbon dioxide gas detection at room temperature (∼25 °C) was successfully fabricated, where ruthenium-decorated tungsten disulfide (Ru@WS) quantum dots (QDs) have been used as the sensing material. A mixed solvent of lithium hydroxide (LiOH · HO) and N-methyl-2-pyrrolidone (NMP) was used to obtain the Ru-decorated WS QDs from the exfoliated WS nanoflakes. Then, the prepared WS QDs and Ru@WS QDs were confirmed using different material characterization techniques.

Correction to "Impact of Doping on GO: Fast Response-Recovery Humidity Sensor".

[This corrects the article DOI: 10.1021/acsomega.6b00399.

Effect of carbon derivatives in sulfonated poly(etherimide)-liquid crystal polymer composite for methanol vapor sensing.

A class of highly sensitive chemiresistive sensors is developed for methanol (MeOH) vapor detection in ambient atmosphere by introducing conductive nanofillers like carbon black, multi-wall carbon nanotubes, and reduced graphene oxide into sulfonated poly(etherimide) (PEI)/liquid crystal polymer (LCP) composite (sPEI-LCP). Polar composites are prepared by a sulfonation process for instantaneous enhancement in adsorption capability of the sensing films to the target analyte (MeOH). Sensing properties exhibit that polymer composite-based fabricated sensors are efficient for the detection of different concentration of methanol vapor from 300-1200 parts-per-million (ppm) at room temperature.

Impact of Doping on GO: Fast Response-Recovery Humidity Sensor.

Nowadays, humidity sensors have become essential in numerous applications. However, there are several problems while using them for humidity detection, such as low sensitivity, delayed response and recovery times, less stability, and narrow humidity detection ranges. Here, we demonstrate for the first time a highly sensitive chemiresistive sensor for low-level humidity detection in ambient atmosphere by introducing graphene oxide (GO) and doped GO (Li-doped GO and B-doped GO) as a thin film in a facile manner.