Zhengyu Lei

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A facile method to synthesize well-dispersed TiO2 quantum dots on graphene nanosheets (TiO2 -QDs/GNs) in a water-in-oil (W/O) emulsion system is reported. The TiO2 /graphene composites display high performance as an anode material for lithium-ion batteries (LIBs), such as having high reversible lithium storage capacity, high Coulombic efficiency, excellent(More)
Deficiencies of cathode materials severely limit cycling performance and discharge rates of Li batteries. The key problem is that cathode materials must combine multiple properties: high lithium ion intercalation capacity, electrical/ionic conductivity, porosity, and mechanical toughness. Some materials revealed promising characteristics in a subset of(More)
Because of a MN's multi-interface sharing a unique network prefix, more resource shall be consumed owing to multiple copies of every packet being forwarded to a Mobile Node (MN) in a Proxy Mobile IPv6 (PMIPv6) domain. It may also result in network congestion and some security issues. To tackle the issues, a predictive binding mechanism is presented in this(More)
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