3D oxidized polyacrylonitrile/Ag framework guided bottom-up lithium deposition for dendrite-free lithium metal batteries

Ran，Qiwen1; Wang，Liping1; Li，Li1; Zhao，Yulin1; Lu，Zhouguang2; Chen，Shiying1; Zou，Jian1; Chen，Pengyu1; Gao，Jian1,3; Niu，Xiaobin1

2021-12-15

10.1016/j.cej.2021.130780

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Lithium (Li) metal anode is considered as the “Holy Grail” for next-generation ultrahigh-energy-density lithium-ion batteries, but its application is tremendously limited by the demerits of uncontrolled dendrite growth, unrestricted volume expansion, and continuous side reactions. Herein, a 3D oxidized polyacrylonitrile (PAN)/Ag framework is designed to realize a bottom-up Li deposition and dendrite-free growth. The electronic insulator nature of the oxidized PAN guides a bottom-up lithium deposition to largely prevent volume expansion. In addition, the Ag nanoparticles on the PAN surface directly form a Li-Ag alloy with as-deposited Li, resulting in a low nucleation barrier. Furthermore, Li-Ag, as a Li conductor, induces a uniform and dense Li deposition. As a result, the oxidized PAN/Ag framework offers a long lifespan over 1200 h at a current density of 0.5 mA cm and an areal capacity of 1 mAh cm. Moreover, in a full cell coupled with LiNiCoO cathode, a capacity retention of 84% after 100 cycles is achieved. This study provides a guideline to fabricate stable Li metal anode and highlights the key role of controlling electronic and ionic transportation separately in the 3D framework.

Ag nanoparticles Bottom-up growth Li-Ag alloy Lithium metal anode Oxidized polyacrylonitrile

EI ; SCI

英语

其他

Fundamental Research Funds for the Central Universities, China[ZYGX2019Z008] ; National Natural Science Foundation of China[52072061] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000729148100004

ELSEVIER SCIENCE SA

20212510519010

Anodes ; Binary alloys ; Cobalt alloys ; Cobalt compounds ; Deposition ; Expansion ; Lithium alloys ; Lithium compounds ; Lithium-ion batteries ; Metal nanoparticles ; Metals ; Nickel compounds ; Silver alloys ; Silver nanoparticles

Lithium and Alloys:542.4 ; Precious Metals:547.1 ; Alkali Metals:549.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Materials Science:951

ENGINEERING

2-s2.0-85107986851

Scopus

1.School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu,610054,China
2.Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology,Shenzhen,518055,China
3.New Energy Materials Laboratory,Sichuan Changhong Electric Co.,Ltd,Chengdu,610041,China

Ran，Qiwen,Wang，Liping,Li，Li,et al. 3D oxidized polyacrylonitrile/Ag framework guided bottom-up lithium deposition for dendrite-free lithium metal batteries[J]. CHEMICAL ENGINEERING JOURNAL,2021,426.

Ran，Qiwen.,Wang，Liping.,Li，Li.,Zhao，Yulin.,Lu，Zhouguang.,...&Niu，Xiaobin.(2021).3D oxidized polyacrylonitrile/Ag framework guided bottom-up lithium deposition for dendrite-free lithium metal batteries.CHEMICAL ENGINEERING JOURNAL,426.

Ran，Qiwen,et al."3D oxidized polyacrylonitrile/Ag framework guided bottom-up lithium deposition for dendrite-free lithium metal batteries".CHEMICAL ENGINEERING JOURNAL 426(2021).