Functional Application Of Nanomuterials In Novel Energy Field

Depletion of fossil fuel and global pollution caused by fossil fuel have been accelerated our demand for clean and renewable energy resources.Nanomaterials have attracted much attention due to their special properties,which have a promising application prospect in the conversion,storage and development of new energy.Electrocatalytic splitting of water by hydrogen evolution reaction(HER)is an attractive and promising approach to produce hydrogen energy,which is deemed as one kind of the most promising new energy.Non-noble metal nanomaterials are expected to replace precious metals as catalytic materials,but the high initial potential and poor stability are the constraints,which demand further investigation.In addition,triboelectric nanogenerators(TENG)have received increasing attention form the whole world,which have been achieving great progress as novel power sources.With the development of nanotechnology,various nanomaterials have been introduced into the structural design of TENG to improve the output power performance or to endue new functions.In this paper,we have designed a nanomaterial as HER electrocatalyst,and introduced nanomaterials into the structural design of TENG to implement highly efficient self-healing strategy.The main tasks are as follows:1.We designed a stepwise way to synthesis a hierarchical heterostructure nanocomposites(AgPdMo/MoS2 NWs)by in-situ surface-derivation of MoS2 nanosheets on AgPdMo trimetallic nanowires.The collective effect of unique morphological design and multicomponent structure afford an advanced HER performance with a low potential of 54 mV and Tafel slope of 72 mV dec-1 at 10 mA cm-2.Furthermore,AgPdMo/MoS2 NWs exhibit an excellent long-term cyclic stability.2.We present a novel design of an environmentally friendly hydrogel based self-healing TENG(HS-TENG)achieved by introducing photothermally active polydopamine particles(PDAPs)and multi walled carbon nanotubes(MWCNTs),and water-active dynamic borate bonds into a PVA/agarose hydrogel.The resultant HS-TENG can be highly efficiently self-healed under both the exposure to water at 25℃ in 5 min or near infrared light in 1 min.The HS-TENG achieves high stretchability,and mechanical and electrical healing efficiency,respectively.