Ultrafine Metal Nanoparticles/N-Doped Porous Carbon Hybrids Coated on Carbon Fibers as Flexible and Binder-Free Water Splitting Catalysts

By employing in situ reduction of metal precursor and metal-assisted carbon etching process, this study achieves a series of ultrafine transition metal-based nanoparticles (Ni–Fe, Ni–Mo) embedded in N-doped carbon, which are found efficient catalysts for electrolytic water splitting. The as-prepared hybrid materials demonstrate outstanding catalytic activities as non-noble metal electrodes Published in:

Published in: Advanced Energy Materials

High Voltage LiNi0.5Mn0.3Co0.2O2/Graphite Cell Cycled at 4.6 V with a FEC/HFDEC-Based Electrolyte

A high voltage LiNi0.5Mn0.3Co0.2O2/graphite cell with a fluorinated electrolyte formulation 1.0 m LiPF6 fluoroethylene carbonate/bis(2,2,2-trifluoroethyl) carbonate is reported and its electrochemical performance is evaluated at cell voltage of 4.6 V. Comparing with its nonfluorinated electrolyte counterpart, the reported fluorinated one shows much improved Coulombic efficiency and capacity retention when a Published in:

Published in: Advanced Energy Materials

Boosting Photoelectrochemical Water Splitting by TENG-Charged Li-Ion Battery

The need for cost-effective and sustainable power supplies has spurred a growing interest in hybrid energy harvesting systems, and the most elementary energy production process relies on intermittent solar power. Here, it is shown how the ambient mechanical energy leads to water splitting in a photoelectrochemical (PEC) cell boosted by Published in:

Published in: Advanced Energy Materials

Enhanced Electrocatalysis for Energy-Efficient Hydrogen Production over CoP Catalyst with Nonelectroactive Zn as a Promoter

As a non-toxic species, Zn fulfills a multitude of biological roles, but its promoting effect on electrocatalysis has been rarely explored. Herein, the theoretic predications and experimental investigations that nonelectroactive Zn behaves as an effective promoter for CoP-catalyzed hydrogen evolution reaction (HER) in both acidic and alkaline media is reported. Published in:

Published in: Advanced Energy Materials

A battery-inspired strategy for carbon fixation

Scientists working toward the elusive lithium-air battery discovered an unexpected approach to capturing and storing carbon dioxide away from the atmosphere. Using a design intended for a lithium-CO2 battery, researchers in Japan and China have developed a way to isolate solid carbon dust from gaseous carbon dioxide, with the potential Published in:

Published in: Phys.org

Lithium-Ion Batteries: One-to-One Comparison of Graphite-Blended Negative Electrodes Using Silicon Nanolayer-Embedded Graphite versus Commercial Benchmarking Materials for High-Energy Lithium-Ion Batteries (Adv. Energy Mater. 15/2017)

In article number 1700071, Jaephil Cho, Minseong Ko, and co-workers report a rational comparison of graphite-blended Si anodes with Si nanolayer-embedded graphite and industrially developed benchmarking materials. The Si nanolayer-embedded graphite exhibits superior compatibility with conventional graphite to the benchmarking materials, offering the predominant potential for high-energy Li battery anodes. Published in:

Published in: Advanced Energy Materials

Balancing the Electrical Double Layer Capacitance and Pseudocapacitance of Hetero-atom Doped Carbon

Nanoscale, 2017, Accepted ManuscriptDOI: 10.1039/C7NR04234E, PaperZihang Huang, Tianyu Liu, Yu Song, Yat Li, Xiao-Xia LiuHeteroatom-doped carbonaceous materials derived from polymers are emerging as a new class of promising supercapacitor electrodes. These electrodes have both electrical double layer capacitance (from carbon matrix) and pseudo-capacitance (from…The content of this RSS Feed (c) Published in:

Published in: RSC Nanoscale

Hydrothermal fabrication of reduced graphene oxide/activated carbon/MnO2 hybrids with excellent electrochemical performance for supercapacitors

RSC Adv., 2017, 7,39024-39033DOI: 10.1039/C7RA07056J, Paper Open Access &nbsp This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Yue Li, Lanshu Xu, Jianmin Gao, Xiaojuan JinA graphene/activated carbon/MnO2 (GAM) composite was synthesized by transferring to a hydrothermal synthesis reactor and maintained at 140 [degree]C for 2 h.The content Published in:

Published in: RSC Advances

Spit-powered microbial fuel cell developed to power biosensors in remote regions

The battery is designed to be used in extreme conditions where normal batteries don’t function and although it only generates a relatively small amount of electricity, it is enough to power devices such as biosensors.
Professor Seokheun Choi, who developed the battery, has been focusing on developing micro-power sources for use Published in:

Published in: Engineering and Technology Magazine