A high power Sn–C/C–LiFePO4 lithium ion battery

Abstract In this work we report a lithium ion battery characterized by very high rate capability, environmental compatibility, and potentially low cost. The battery is based on a lithium alloying, Sn–C, anode and an optimized lithium iron phosphate, LiFePO 4 , cathode. The morphology and structure of the materials were characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques, while the electrochemical performances were evaluated by galvanostatic cycling and electrochemical impedance spectroscopy (EIS). Both the anode and the cathode reveal enhanced structure and morphology as well as excellent properties in terms of specific capacity, cycle life and, in particular, rate capability. The full Sn–C/LiFePO 4 lithium ion battery operates at 2.8 V with a stable capacity of about 120 mAh g −1 for 100 cycles at the high rate of 3C. The cell has an energy density of 350 W h kg −1 and a power density of 2.4 kW kg −1 . These interesting properties candidate the lithium ion battery here reported as a very appealing energy storage system, in particular for applications requiring high power densities.

[1]  Bruno Scrosati,et al.  A Nanostructured Sn–C Composite Lithium Battery Electrode with Unique Stability and High Electrochemical Performance , 2008 .

[2]  Nathalie Ravet,et al.  Electroactivity of natural and synthetic triphylite , 2001 .

[3]  Linda F. Nazar,et al.  Approaching Theoretical Capacity of LiFePO4 at Room Temperature at High Rates , 2001 .

[4]  Zhiguo Zhang,et al.  A simple, cheap soft synthesis routine for LiFePO4 using iron(III) raw material , 2007 .

[5]  Li Wang,et al.  Preparation and characterization of high-density spherical Li0.97Cr0.01FePO4/C cathode material for lithium ion batteries , 2006 .

[6]  B. Scrosati,et al.  Ternary Sn-Co-C Li-ion battery electrode material prepared by high energy ball milling , 2007 .

[7]  Sun-Yuan Tsay,et al.  Synthesis and characterization of nano-sized LiFePO4 cathode materials prepared by a citric acid-based sol–gel route , 2004 .

[8]  Yi-Ping Chiang,et al.  Electrochemical properties of LiFe0.9Mg0.1PO4 / carbon cathode materials prepared by ultrasonic spray pyrolysis , 2007 .

[9]  Vladimir G. Tsirelson,et al.  Multipole analysis of the electron density in triphylite, LiFePO4, using X‐ray diffraction data , 1993 .

[10]  Bruno Scrosati,et al.  Double Carbon Coating of LiFePO4 as High Rate Electrode for Rechargeable Lithium Batteries , 2010, Advanced materials.

[11]  B. Scrosati,et al.  Lithium batteries: Status, prospects and future , 2010 .

[12]  Bruno Scrosati,et al.  An advanced lithium ion battery based on high performance electrode materials. , 2011, Journal of the American Chemical Society.

[13]  D. Aurbach.  Review of selected electrode–solution interactions which determine the performance of Li and Li ion batteries , 2000 .

[14]  Bruno Scrosati,et al.  A Novel Concept for the Synthesis of an Improved LiFePO4 Lithium Battery Cathode , 2002 .

[15]  Dong Ju Lee,et al.  A lithium ion battery using nanostructured Sn–C anode, LiFePO4 cathode and polyethylene oxide-based electrolyte , 2011 .

[16]  M. Armand,et al.  Issues and challenges facing rechargeable lithium batteries , 2001, Nature.