Charge-driven self-assembly synthesis of straw-sheaf-like Co3O4 with superior cyclability and rate capability for lithium-ion batteries

Wang, Bin2; Lu, Xiao-Ying1; Tsang, Chi-Wing1; Wang, Yuanhao1; Au, Wai Kuen1; Guo, Hongfan3; Tang, Yuanyuan4

2018-04-15

10.1016/j.cej.2017.12.124

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Rational structure design of anode materials plays crucial roles in the continuous improvement of electrochemical lithium storage performance for high performance lithium-ion batteries (LIBs). In this study, a novel hierarchical straw-sheaf-like Co3O4 (Co3O4-SSL) composed of numerous strongly tied nanoneedles was successfully synthesized with hydrothermal route by a charge-driven self-assembly strategy. Material characterizations indicated that typical length of nanoneedles was about 10 mu m and the average diameter was about 80 nm. Mechanism studies implied that positively charged diallyldimethylammonium chloride (DDA) molecules played a key role in the formation of straw-sheaf-like structures. Impressively, when Co3O4-SSL was investigated as anode materials for electrochemical lithium storage, high specific capacity (e.g. 842.9 mAh g(-1) after 300 cycles tested at 500 mA g(-1)), superior cycling stability (e.g. capacity retention of about 100% over 300 cycles) and excellent rate capability (e.g. 707 mAh g(-1) tested at 3000 mA g(-1)) were achieved in the repeated chargingdischarging cycles, demonstrating great potentials in energy storage materials. The proposed synthetic strategy is appealing in electrode structure design for next generation LIBs.

Cobalt oxide Anode materials Straw-sheaf-like structure Lithium-ion battery

SCI ; EI

英语

其他

Technological and Higher Education Institute of Hong Kong Seed Grant Scheme[1415103] ; Technological and Higher Education Institute of Hong Kong Seed Grant Scheme[14151112]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000427618400030

ELSEVIER SCIENCE SA

20181304964300

Anodes ; Characterization ; Chlorine compounds ; Cobalt compounds ; Cobalt deposits ; Ions ; Nanoneedles ; Self assembly ; Storage (materials)

Heavy Metal Mines:504.3 ; Storage:694.4 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Solid State Physics:933 ; Materials Science:951

ENGINEERING

Web of Science

1.Technol & Higher Educ Inst Hong Kong, Fac Sci & Technol, Hong Kong, Hong Kong, Peoples R China
2.Hong Kong Appl Sci & Technol Res Inst, Hong Kong, Hong Kong, Peoples R China
3.Shenyang Univ Chem Technol, Coll Chem Engn, Shenyang 110142, Liaoning, Peoples R China
4.Southern Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Wang, Bin,Lu, Xiao-Ying,Tsang, Chi-Wing,et al. Charge-driven self-assembly synthesis of straw-sheaf-like Co3O4 with superior cyclability and rate capability for lithium-ion batteries[J]. CHEMICAL ENGINEERING JOURNAL,2018,338:278-286.

Wang, Bin.,Lu, Xiao-Ying.,Tsang, Chi-Wing.,Wang, Yuanhao.,Au, Wai Kuen.,...&Tang, Yuanyuan.(2018).Charge-driven self-assembly synthesis of straw-sheaf-like Co3O4 with superior cyclability and rate capability for lithium-ion batteries.CHEMICAL ENGINEERING JOURNAL,338,278-286.

Wang, Bin,et al."Charge-driven self-assembly synthesis of straw-sheaf-like Co3O4 with superior cyclability and rate capability for lithium-ion batteries".CHEMICAL ENGINEERING JOURNAL 338(2018):278-286.