Lithium tungsten bronze modified carbon fiber membrane current collectors for dendrite-free metal lithium anodes

被引：0

作者：

Xiao Y. ^{[1
,2
]}

Wang H. ^{[1
,3
]}

Li X. ^{[1
]}

Tian Z. ^{[1
]}

Li X. ^{[1
]}

Zhang Y. ^{[2
]}

You D. ^{[2
]}

Dong C. ^{[2
]}

Kang L. ^{[2
]}

Jiang F. ^{[2
]}

机构：

[1] College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan

[2] School of Environmental and Material Engineering, Yantai University, Yantai

[3] Weichai Power Co., Ltd., Weifang

来源：

Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2020年 / 50卷 / 05期

关键词：

Carbon fibers; Li[!sub]0.47[!/sub]WO[!sub]2.89[!/sub; Lithium dendrite; Lithium ion battery; Lithium metal anode; Lithium tungsten bronze;

D O I：

10.1360/SST-2019-0301

中图分类号：

学科分类号：

摘要：

Polyacrylonitrile-lithium tungsten bronze (PAN-Li0.47WO2.89) composite fiber membranes are prepared by electrospinning and then pre-oxidized and carbonized to obtain lithium tungsten bronze modified polyacrylonitrile-based composite carbon fiber membrane current collectors (C(PAN)-Li0.47WO2.89). The composite fiber membranes offer the attractive advantages of high electrical conductivity and large specific surface area (52.84 m2 g-1), reducing the amount of surface lithium deposition and deposition current density. Additionally, introducing lithiophilic Li0.47WO2.89 into the fibers, effectively improves the reversibility and uniformity of the lithium deposition-stripping reaction by reducing nucleation overpotential and increasing nuclei density. With these benefits, the C(PAN)-Li0.47WO2.89 composite fibers demonstrate a high coulombic efficiency of 99.4% even after 1000 cycles (0.5 mA cm-2 current density and 0.5 mAh cm-2 lithium deposition capacity); whereas, the coulombic efficiency of copper foil and C(PAN) fiber current collectors is only 8.5% and 64.6% after 100 and 800 cycles, respectively. This study provides a new approach for the development of high-performance metal lithium batteries. © 2020, Science Press. All right reserved.

引用

页码：562 / 570

页数：8

共 28 条

[1]

Ding F, Xu W, Chen X, Et al., Effects of cesium cations in lithium deposition via self-healing electrostatic shield mechanism, J Phys Chem C, 118, pp. 4043-4049, (2014)

[2]

Ding F, Xu W, Graff G L, Et al., Dendrite-free lithium deposition via self-healing electrostatic shield mechanism, J Am Chem Soc, 135, pp. 4450-4456, (2013)

[3]

Xu W, Wang J, Ding F, Et al., Lithium metal anodes for rechargeable batteries, Energy Environ Sci, 7, pp. 513-537, (2014)

[4]

Harry K J, Hallinan D T, Parkinson D Y, Et al., Detection of subsurface structures underneath dendrites formed on cycled lithium metal electrodes, Nat Mater, 13, pp. 69-73, (2013)

[5]

Sacci R L, Black J M, Balke N, Et al., Nanoscale imaging of fundamental Li battery chemistry: Solid-electrolyte interphase formation and preferential growth of lithium metal nanoclusters, Nano Lett, 15, pp. 2011-2018, (2015)

[6]

Jia W, Wang Z, Li J, Et al., A dual-phase Li-Ca alloy with a patternable and lithiophilic 3D framework for improving lithium anode performance, J Mater Chem A, 7, pp. 22377-22384, (2019)

[7]

Wang L, Zhang L, Wang Q, Et al., Long lifespan lithium metal anodes enabled by Al2O3 sputter coating, Energy Storage Mater, 10, pp. 16-23, (2018)

[8]

Steiger J, Kramer D, Monig R, Mechanisms of dendritic growth investigated by in situ light microscopy during electrodeposition and dissolution of lithium, J Power Sources, 261, pp. 112-119, (2014)

[9]

Zhang X Q, Zhao C Z, Huang J Q, Et al., Recent advances in energy chemical engineering of next-generation lithium batteries, Engineering, 4, pp. 831-847, (2018)

[10]

Jia W, Wang Y, Qu S, Et al., ZnF2 coated three dimensional Li-Ni composite anode for improved performance, J Materiomics, 5, pp. 176-184, (2019)

← 1 2 3 →