MoS2/Graphene Composite Paper for Sodium-Ion Battery Electrodes

被引:1121
作者
David, Lamuel [1 ]
Bhandavat, Romil [1 ]
Singh, Gurpreet [1 ]
机构
[1] Kansas State Univ, Mech & Nucl Engn Dept, Manhattan, KS 66506 USA
关键词
TMDC; sodium battery; free-standing electrode; graphene; MoS2; X-RAY-DIFFRACTION; LITHIUM-ION; HIGH-CAPACITY; GRAPHENE OXIDE; ANODE MATERIAL; RATE CAPABILITY; MOS2; CARBON; RAMAN; NANOCOMPOSITES;
D O I
10.1021/nn406156b
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We study the synthesis and electrochemical and mechanical performance of layered freestanding papers composed of acid-exfoliated few-layer molybdenum disulfide (MoS2) and reduced graphene oxide (rGO) flakes for use as a self-standing flexible electrode in sodium-ion batteries. Synthesis was achieved through vacuum filtration of homogeneous dispersions consisting of varying weight percent of acid-treated MoS2 flakes in GO in DI water, followed by thermal reduction at elevated temperatures. The electrochemical performance of the crumpled composite paper (at 4 mg cm(-2)) was evaluated as counter electrode against pure Na foil in a half-cell configuration. The electrode showed good Na cycling ability with a stable charge capacity of approximately 230 mAh g(-1) with respect to total weight of the electrode with Coulombic efficiency reaching approximately 99%. In addition, static uniaxial tensile tests performed on crumpled composite papers showed high average strain to failure reaching approximately 2%.
引用
收藏
页码:1759 / 1770
页数:12
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