title: Facile synthesis of highly porous Ni-Sn intermetallic microcages with excellent electrochemical performance for lithium and sodium storage.
abstract: Highly porous Ni3Sn2 microcages composed of tiny nanoparticles were synthesized by a facile template-free solvothermal method (based on Ostwald ripening and etching mechanism) for use as anode materials for high-capacity and high-rate-capability Li-ion and Na-ion batteries. The Ni3Sn2 porous microcages exhibit highly stable and substantial discharge capacities of the amount to 700 mA h g(-1) after 400 cycles at 0.2C and 530 mA h g(-1) after 1000 cycles at 1C for Li-ion battery anode. For Na-ions storage performance, a reversible capacity of approximate 270 mA h g(-1) is stably maintained at 1C during the first 300 cycles.
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China , Hefei, 230026, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Yuren
authors.initials: Y
authors.lastname: Wen
authors.forename: Peter A
authors.initials: PA
authors.lastname: van Aken
authors.forename: Joachim
authors.initials: J
authors.lastname: Maier
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
keywords: Li-ion batteries; Na-ion batteries; Ni3Sn2; anodes; porous structures