Published in Korean Journal of Chemical Engineering
A silicon/porous multi-walled carbon nanotubes composite was synthesized using a simple method. A mixture comprising silicon nanoparticles and multi-walled carbon nanotubes was prepared by a mini ball milling method followed by annealing at low temperature. The low-temperature annealing treatment allows the aggregation of silicon nanoparticles and ...
Herein, novel single-crystalline Ge nanotetrahedrons with dominantly exposed (102) facets are synthesized via a liquid-phase chemical reduction strategy. Polyvinyl pyrrolidone is innovatively employed to mediate the product morphology, while the reaction time also plays a significant role. As the anode materials for lithium ion batteries, the nanos...
Herein, novel single-crystalline Ge nanotetrahedrons with dominantly exposed (102) facets are synthesized via a liquid-phase chemical reduction strategy. Polyvinyl pyrrolidone is innovatively employed to mediate the product morphology, while the reaction time also plays a significant role. As the anode materials for lithium ion batteries, the nanos...
Synthesize particular structural material is an effective way to improve the performances of conversion mechanism materials for lithium ion batteries (LIBs), as there are inevitable huge volume expansion and severe concentration of granular material during the structure conversion process while Li+ insertion and extraction for charge-discharge, whi...
In this work, nitrogen-doped carbon with hierarchical porous and hollow sphere structure has been synthesized through a simple and facile route of spray drying using glycine as the nitrogen-containing carbon source. After KOH activation, the prepared material (NHPCA) shows a large specific surface area of 962m(2)g(-1) with moderate N-doping of 5.74...
T-Nb2O5/reduced graphene oxide nanohybrids were fabricated via the hydrothermal attachment of Nb2O5 nanowires to dispersed graphene oxide nanosheets followed by a high-temperature phase transformation. Electrochemical measurements showed that the nanohybrid anodes possessed enhanced reversible capacity and superior cycling stability compared to tho...
Nowadays, much progress has been made in designing practical high-energy-density anode materials for lithium-ion batteries (LIBs). However, during repeated charge-discharge cycles, high-energy-density anode materials usually undergo large volume changes, which results in a limited cycle life. The situation is worse when anode materials have high ta...
A facile method was developed for the synthesis of carbon fibers with molybdenum oxide nanoplates arrays grown on. The carbon fibers were directly derived from cotton pads, which provide the long range conductivity. The sheet-like structure of MoO3 shortens the path of lithium diffusion and offers a large surface area for electrolyte penetration. T...
We present a general and facile synthesis strategy, on the basis of metal-ammine complex chemistry, for synthesizing hollow transition-metal oxides (Co3O4, NiO, CuO-Cu2O, and ZnO)/nitrogen-doped graphene hybrids, potentially applied in high-performance lithium-ion batteries. The oxygen-containing functional groups of graphene oxide play a prerequis...
Alkali metal ion intercalation into layered transition-metal dichalcogenide structures is a promising approach to make next generation rechargeable batteries for energy storage. It has been noted that the number of Na-ions which can be reversibly intercalated and extracted per MoS2 is limited, and the chemical and electrochemical processes/mechanis...
