Carbon-Stabilized Interlayer-Expanded Few-Layer MoSe2 Nanosheets for Sodium Ion Batteries with Enhanced Rate Capability and Cycling Performance

• DOI: 10.1021/acsami.6b11230
• Publication Date: 2016-11-07T15:44:18Z
• Authors: Yongchao Tang; Zongbin Zhao; Yuwei Wang; Yanfeng Dong; Yang Liu; Xuzhen Wang; Jieshan Qiu
• Keywords: Carbon fibers; Cycling

Sodium ion batteries (SIBs) have been considered as a promising alternative to lithium batteries, owing the abundant reserve and low-cost accessibility of sodium source. To date, pursuit high-performance anode materials remains great challenge for SIBs. In this work, carbon-stabilized interlayer-expanded few-layer MoSe2 nanosheets (MoSe2@C) fabricated by an oleic acid (OA) functionalized synthesis-polydopamine (PDA) stabilization-carbonization strategy, their structural, morphological, electrochemical properties carefully characterized compared with carbon-free MoSe2. When evaluated half MoSe2@C exhibits remarkably enhanced rate capability 367 mA h g-1 at 5 A g-1, high reversible discharge capacity 445 1 long-term cycling stability over 100 cycles. further explore potential applications, is assembled into full Na3V2(PO4)3 (NVP) cathode materials, showing impressively 421 0.2 after Such results are primarily attributed unique structure, which facilitates permeation electrolyte inner nanosheets, promoting charge transfer efficiency among accommodating volume change from discharge-charge cycling.