Fan Pu

TL;DR: A series of nitrogen-doped porous carbons are prepared through KOH activation of a nonporous nitrogen-enriched carbon which is synthesized by pyrolysis of the polymerized ethylenediamine and carbon tetrachloride as discussed by the authors.

TL;DR: Graphene as supporting sheets for loading of active materials and carbon as the covering layers work together to effectively suppress the aggregation and destruction of Si nanoparticles, keeping the overall electrode highly conductive and active in Li storage.

TL;DR: High capacity and long cycle life have been realized in the novel Si nanoparticles-graphene composites for Li-ion batteries, and the excellent electrochemical performance is ascribed to the uniform distribution ofSi nanoparticles and graphene, which effectively prevents aggregation and pulverization of Si nanoparticle, keeps the overall electrode highly conductive, and maintains the stability of the structure.

TL;DR: An overview of the development in direct sampling mass spectrometry, including some representative ambient ionization and fast extraction methods, and its future outlook as an emerging clinical tool for point-of-care analysis.

TL;DR: This work combines paper SERS and paper spray MS on field-portable and commercial off-the-shelf (COTS) devices for the rapid and low-cost identification and confirmation of fentanyl and its analogues, enabling in situ analysis at the point of seizure of suspect samples.