Ultrathin nickel oxide nanosheets for enhanced sodium storage and lithium storage

被引:111
|
作者
Sun, Wenping [1 ]
Rui, Xianhong [1 ,2 ,3 ]
Zhu, Jixin [1 ]
Yu, Linghui [1 ]
Zhang, Yu [2 ]
Xu, Zhichuan [1 ]
Madhavi, Srinivasan [1 ,2 ]
Yan, Qingyu [1 ,2 ]
机构
[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Energy Res Inst NTU, Singapore 637553, Singapore
[3] Anhui Univ Technol, Sch Energy & Environm, Maansharz 243002, Anhui, Peoples R China
基金
新加坡国家研究基金会;
关键词
Nickel oxide; Nanosheets; Anode; Sodium-ion batteries; Lithium-ion batteries; PERFORMANCE ANODE MATERIAL; ION BATTERIES; HIGH-CAPACITY; METAL-OXIDES; ELECTROCHEMICAL PROPERTIES; NEGATIVE ELECTRODES; LI; CO3O4; NA; HYBRID;
D O I
10.1016/j.jpowsour.2014.10.105
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
Outstanding sodium and lithium storage capability is successfully demonstrated in ultrathin NiO nanosheets (4-5 nm in thickness) synthesized via a facile solvothermal process followed by annealing in air. For sodium storage, the NiO nanosheets deliver a high reversible specific capacity of 299 mA h g(-1) at a current density of 1 A g(-1), and the capacity still remains up to 154 mA h g(-1) at 10 A g(-1). Upon charge/discharge cycling, the specific capacity maintains to be as high as 266 mA h g(-1) during the 100th cycle at 1 A g(-1). Such sodium storage capability of NiO nanosheets is by far one of the best reported for transition metal oxides. For lithium storage, the cell achieves a high reversible specific capacity of 1242 and 250 mA h g(-1), at 0.2 and 15 A g(-1), respectively. The capacity for lithium storage maintains to be 851 mA h g(-1) during the 170th cycle at 2 A g(-1). The present results demonstrate that ultrathin NiO nanosheets are highly attractive for fast sodium/lithium diffusion with high-rate capability for rechargeable sodium-ion batteries (SIBs) and lithium-ion batteries (LIBs). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:755 / 761
页数:7
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