Facile synthesis of crumpled nitrogen-doped carbon/molybdenum disulfide hybrid sheets as high-rate anodes for lithium-ion batteries

被引：16

作者：

Hwang, Taejin ^{[1
]}

Lee, Jeongyeon ^{[1
]}

Oh, Jiseop ^{[1
]}

Kim, Jong Min ^{[1
]}

Jeon, Youngmoo ^{[1
]}

Park, Seung-Keun ^{[3
]}

Piao, Yuanzhe ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Grad Sch Convergence Sci & Technol, Program Nano Sci & Technol, 145 Gwanggyo Ro, Suwon 16229, Gyeonggi Do, South Korea

[2] Adv Inst Convergence Technol, 145 Gwanggyo Ro, Suwon 16229, Gyeonggi Do, South Korea

[3] Kongju Natl Univ, Dept Chem Engn, 1223-24 Cheonan Daero, Cheonan 31080, South Korea

来源：

ELECTROCHIMICA ACTA | 2019年 / 319卷

基金：

新加坡国家研究基金会;

关键词：

Molybdenum disulfide; Lithium ion batteries; High power anode material; Modified mix-bake-wash synthesis; N-doped carbon; HIERARCHICAL POROUS CARBON; MOS2; NANOSHEETS; ELECTROCHEMICAL PERFORMANCE; FUNCTIONALIZED GRAPHENE; STORAGE PERFORMANCE; 3D ARCHITECTURES; HIGH-CAPACITY; CNT BACKBONE; NANOTUBES; LI;

D O I：

10.1016/j.electacta.2019.07.018

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

To address the demand for high-rate anodes for lithium ion batteries, herein, crumpled MoS2/nitrogen-doped carbon hybrid sheets (CMNCS) were synthesized via a modified mix-bake-wash method. Material characterization proved that CMNCS comprised sheets with few-layer thickness that were composed of homogenously distributed MoS2 and N-doped carbon matrix with numerous mesopores. CMNCS offers the morphological advantage of 3D interconnected electron pathways and an enlarged ionic contact area for improving the rate performance. Furthermore, the N-doped carbon matrix in CMNCS plays a role in enhancing the electrical conductivity as well as suppressing volume changes during cycling. The CMNCS demonstrated a reversible discharge capacity of 264 mAh g(-1) at 10 A g(-1) and a stable cycle life with a discharge capacity of 324.2 mAh g(-1) and coulombic efficiency of 99.7%, even after the 1000th cycle at 4 Ag-1. These results indicate that CMNCS offers great potential as an anode material for lithium ion batteries that require high current and stable cycle life. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：596 / 605

页数：10

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