Swift Combustion Synthesis of PbLi2Ti6O14 Anode for Lithium-Ion Batteries: Diffusional and Electrochemical Investigation | Zendy

Anshuman Chaupatnaik | Zendy; Prabeer Barpanda | Zendy

Open Access

Swift Combustion Synthesis of PbLi₂Ti₆O₁₄ Anode for Lithium-Ion Batteries: Diffusional and Electrochemical Investigation

Author(s) -

Anshuman Chaupatnaik,

Prabeer Barpanda

Publication year - 2018

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0191903jes

Subject(s) - anode , lithium titanate , materials science , electrochemistry , rietveld refinement , orthorhombic crystal system , analytical chemistry (journal) , ion , lithium (medication) , ionic conductivity , activation energy , conductivity , lithium ion battery , chemical engineering , chemistry , electrode , battery (electricity) , crystallography , crystal structure , thermodynamics , medicine , power (physics) , physics , organic chemistry , chromatography , engineering , electrolyte , endocrinology

Lead lithium titanate (PbLi2Ti6O14) was synthesized by combustion route restricting the annealing at 900 degrees C to just 1 minute. Rietveld analysis confirmed orthorhombic (Cmca) product phase with an average particle size similar to 200 nm and surface area of 2 m(2)/g forming secondary porous particles. From bond valence site energy (BVSE) calculations, 1 D ionic conduction was found along c axis with low activation energy (0.23 eV). AC conductivity analysis revealed a bulk conductivity of 2 x 10(-7) S. cm(-1) at room temperature and 1 x 10(-4) S. cm(-1) at 200 degrees C with a switch from extrinsic 1D to intrinsic 2D mechanism at 150. C. Li + diffusion coefficient was calculated to be in the order of 10(-12) cm(2). s(-1). More than 4 lithium (per f. u.) could be reversibly (de) inserted delivering capacity over 160 mAh/g with good cycling retention over 1000 cycles. With a feasible rapid synthesis, good diffusional and electrochemical behavior especially high rate capability, PbLi2Ti6O14 can act as a safe 1.35 V anode for rechargeable Li-ion batteries. (c) The Author(s) 2018. Published by ECS.

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