Design and Synthesis of Layered Na₂Ti₃O₇ and Tunnel Na₂Ti₆O₁₃ Hybrid Structures with Enhanced Electrochemical Behavior for Sodium-Ion Batteries.

ABSTRACT: A novel complementary approach for promising anode materials is proposed. Sodium titanates with layered Na₂Ti₃O₇ and tunnel Na₂Ti₆O₁₃ hybrid structure are presented, fabricated, and characterized. The hybrid sample exhibits excellent cycling stability and superior rate performance by the inhibition of layered phase transformation and synergetic effect. The structural evolution, reaction mechanism, and reaction dynamics of hybrid electrodes during the sodium insertion/desertion process are carefully investigated. In situ synchrotron X-ray powder diffraction (SXRD) characterization is performed and the result indicates that Na⁺ inserts into tunnel structure with occurring solid solution reaction and intercalates int

SUBMITTER: Wu C 

PROVIDER: S-EPMC6145307 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature