High Areal Capacitance for Lithium Ion Storage Achieved by a Hierarchical Carbon/MoS2 Aerogel with Vertically Aligned Pores

被引:21
|
作者
Zhang, Peng [1 ]
Liu, Yuqing [1 ]
Yan, Yan [1 ]
Yu, Yang [1 ]
Wang, Qinghong [1 ]
Liu, Mingkai [1 ]
机构
[1] Jiangsu Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab Green Synthet Chem Funct Mat, Xuzhou 221116, Jiangsu, Peoples R China
来源
ACS APPLIED ENERGY MATERIALS | 2018年 / 1卷 / 09期
基金
中国国家自然科学基金;
关键词
carbon/MoS2; aerogel; vertically aligned pores; high rate capability; high areal capacity; lithium ion battery; FEW-LAYER MOS2; BATTERY ANODE; ELECTROCHEMICAL PERFORMANCE; ULTRATHIN NANOSHEETS; HETEROSTRUCTURES; FIBER; NANOFLOWERS; CAPABILITY; NANOFIBERS; NANOTUBES;
D O I
10.1021/acsaem.8b00897
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Developing high energy density electrode materials is of great importance for the practical applications of lithium ion batteries (LIBs). Here, an integrated vertically aligned carbon/MoS2 aerogel (VA-C/MoS2) with oriented pores has been developed. Vertically aligned pores ensure fast transportation of electrons and rapid penetration of electrolyte, meanwhile decreasing the transfer resistance of ions in this VA-C/MoS2 anode. The good electrical conductivity of three-dimensional (3D) carbon matrix with interconnected microstructures, coupling with the homogeneously anchored MoS2 nanoflakes, promotes that all the active sites of MoS2 can be exploited during the electrochemical process. Due to these structural features of the VAC/MoS2 aerogel, an excellent specific capacity of 1089 mAh/g, a high rate capability, and a long-term cycling stability up to 1000 cycles have been simultaneously achieved. Importantly, the areal capacity achieved by VA-C/MoS2 aerogel (12.4 mAh/cm(2)) based on a high mass loading of MoS2 (16 mg/cm(2)) is a 10-fold increase compared with the result of pure MoS2 aggregations (1.24 mAh/cm(2)). advantages and the excellent electrochemical performances permit VA-C/MoS2 aerogel to be a good candidate for LIBs, and can provide new insights for developing new high-energy materials for energy storage applications.
引用
收藏
页码:4814 / 4823
页数:19
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