Bi-functional poly(vinylidene difluoride) coated Al anodes for highly rechargeable aqueous Al-ion batteries

Qingfei Hao; Fei Chen; Xiangtao Chen; Qihan Meng; Yang Qi; Na Li

doi:10.1016/j.electacta.2022.140495

Bi-functional poly(vinylidene difluoride) coated Al anodes for highly rechargeable aqueous Al-ion batteries

Qingfei Hao
, Fei Chen
, Xiangtao Chen
, Qihan Meng
, Yang Qi
, Na Li^*

^*Corresponding author for this work

Northeastern University China

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Aqueous rechargeable aluminum (Al) ion batteries have attracted much attention due to the high abundance of Al metal and high volumetric energy density (8040 mAh cm⁻³). However, Al anode suffers from hydrogen evolution side reactions in aqueous electrolyte due to its low equilibrium redox potential. Here, we developed a poly(vinylidene difluoride) (PVDF) coating that can inhibit free H₂O/O₂ and alleviate the corrosion problem. Theoretical calculations verify that PVDF and Al³⁺ have a strong interaction through the F-Al bond towards the observed uniform Al deposition. As a result, the cell of PVDF-Al/K₂CoFe(CN)₆ achieved 98.2% Coulombic efficiency after 400 cycles at a current density of 100 mA g⁻¹. This work presents an effective and facile strategy to the development of high-performance and low-cost aqueous Al-ion batteries.

Original language	English
Article number	140495
Journal	Electrochimica Acta
Volume	421
DOIs	https://doi.org/10.1016/j.electacta.2022.140495
State	Published - 20 Jul 2022
Externally published	Yes

Keywords

Al metal anodes
Al-ion batteries
Corrosion inhibition
High performance
Poly(vinylidene difluoride)

Access to Document

10.1016/j.electacta.2022.140495

Cite this

@article{a459e3a4904144099dac122b2727ebeb,

title = "Bi-functional poly(vinylidene difluoride) coated Al anodes for highly rechargeable aqueous Al-ion batteries",

abstract = "Aqueous rechargeable aluminum (Al) ion batteries have attracted much attention due to the high abundance of Al metal and high volumetric energy density (8040 mAh cm−3). However, Al anode suffers from hydrogen evolution side reactions in aqueous electrolyte due to its low equilibrium redox potential. Here, we developed a poly(vinylidene difluoride) (PVDF) coating that can inhibit free H2O/O2 and alleviate the corrosion problem. Theoretical calculations verify that PVDF and Al3+ have a strong interaction through the F-Al bond towards the observed uniform Al deposition. As a result, the cell of PVDF-Al/K2CoFe(CN)6 achieved 98.2\% Coulombic efficiency after 400 cycles at a current density of 100 mA g−1. This work presents an effective and facile strategy to the development of high-performance and low-cost aqueous Al-ion batteries.",

keywords = "Al metal anodes, Al-ion batteries, Corrosion inhibition, High performance, Poly(vinylidene difluoride)",

author = "Qingfei Hao and Fei Chen and Xiangtao Chen and Qihan Meng and Yang Qi and Na Li",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = jul,

day = "20",

doi = "10.1016/j.electacta.2022.140495",

language = "英语",

volume = "421",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Bi-functional poly(vinylidene difluoride) coated Al anodes for highly rechargeable aqueous Al-ion batteries

AU - Hao, Qingfei

AU - Chen, Fei

AU - Chen, Xiangtao

AU - Meng, Qihan

AU - Qi, Yang

AU - Li, Na

PY - 2022/7/20

Y1 - 2022/7/20

N2 - Aqueous rechargeable aluminum (Al) ion batteries have attracted much attention due to the high abundance of Al metal and high volumetric energy density (8040 mAh cm−3). However, Al anode suffers from hydrogen evolution side reactions in aqueous electrolyte due to its low equilibrium redox potential. Here, we developed a poly(vinylidene difluoride) (PVDF) coating that can inhibit free H2O/O2 and alleviate the corrosion problem. Theoretical calculations verify that PVDF and Al3+ have a strong interaction through the F-Al bond towards the observed uniform Al deposition. As a result, the cell of PVDF-Al/K2CoFe(CN)6 achieved 98.2% Coulombic efficiency after 400 cycles at a current density of 100 mA g−1. This work presents an effective and facile strategy to the development of high-performance and low-cost aqueous Al-ion batteries.

AB - Aqueous rechargeable aluminum (Al) ion batteries have attracted much attention due to the high abundance of Al metal and high volumetric energy density (8040 mAh cm−3). However, Al anode suffers from hydrogen evolution side reactions in aqueous electrolyte due to its low equilibrium redox potential. Here, we developed a poly(vinylidene difluoride) (PVDF) coating that can inhibit free H2O/O2 and alleviate the corrosion problem. Theoretical calculations verify that PVDF and Al3+ have a strong interaction through the F-Al bond towards the observed uniform Al deposition. As a result, the cell of PVDF-Al/K2CoFe(CN)6 achieved 98.2% Coulombic efficiency after 400 cycles at a current density of 100 mA g−1. This work presents an effective and facile strategy to the development of high-performance and low-cost aqueous Al-ion batteries.

KW - Al metal anodes

KW - Al-ion batteries

KW - Corrosion inhibition

KW - High performance

KW - Poly(vinylidene difluoride)

UR - https://www.scopus.com/pages/publications/85129708216

U2 - 10.1016/j.electacta.2022.140495

DO - 10.1016/j.electacta.2022.140495

M3 - 文章

AN - SCOPUS:85129708216

SN - 0013-4686

VL - 421

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 140495

ER -

Bi-functional poly(vinylidene difluoride) coated Al anodes for highly rechargeable aqueous Al-ion batteries

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this