Enhanced Ion Transport Through Mesopores Engineered with Additional Adsorption of Layered Double Hydroxides Array in Alkaline Flow Batteries

Pengfei Wang; Kun Zhang; Hao Li; Jing Hu; Menglian Zheng

doi:10.1002/smll.202308791

Enhanced Ion Transport Through Mesopores Engineered with Additional Adsorption of Layered Double Hydroxides Array in Alkaline Flow Batteries

Pengfei Wang
, Kun Zhang
, Hao Li^*
, Jing Hu^*
, Menglian Zheng^*

^*Corresponding author for this work

Interdisciplinary Nanoscience Center

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

21 Citations (Scopus)

Abstract

Efficient mass transfer in electrodes is essential for the electrochemical processes of battery charge and discharge, especially at high rates and capacities. This study introduces a 3D electrode design featuring layered double hydroxides (LDHs) nanosheets array grown in situ on a carbon felt surface for flow batteries. The mesoporous structure and surface characteristic of LDH nanosheets, especially, the hydroxyl groups forming a unique “H-bonding-like” geometry with ferrous cyanide ions, facilitate efficient adsorption and ion transport. Thus, the designed LDHs electrode enables the alkaline zinc-iron flow battery to maintain a voltage efficiency of 81.6% at an ultra-high current density of 320 mA cm⁻², surpassing the values reported in previous studies. The energy efficiency remains above 84% after 375 cycles at a current density of 240 mA cm⁻². Molecular dynamics simulations verify the enhanced adsorption effect of LDH materials on active ions, thus facilitating ion transport in the battery. This study provides a novel approach to improve mass transport in electrodes for alkaline flow batteries and other energy storage devices.

Original language	English
Article number	2308791
Journal	Small
Volume	20
Issue	23
ISSN	1613-6810
DOIs	https://doi.org/10.1002/smll.202308791
Publication status	Published - Jun 2024

Keywords

alkaline flow battery
energy storage
ion transport
layered double hydroxides
mesoporous materials

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title = "Enhanced Ion Transport Through Mesopores Engineered with Additional Adsorption of Layered Double Hydroxides Array in Alkaline Flow Batteries",

abstract = "Efficient mass transfer in electrodes is essential for the electrochemical processes of battery charge and discharge, especially at high rates and capacities. This study introduces a 3D electrode design featuring layered double hydroxides (LDHs) nanosheets array grown in situ on a carbon felt surface for flow batteries. The mesoporous structure and surface characteristic of LDH nanosheets, especially, the hydroxyl groups forming a unique “H-bonding-like” geometry with ferrous cyanide ions, facilitate efficient adsorption and ion transport. Thus, the designed LDHs electrode enables the alkaline zinc-iron flow battery to maintain a voltage efficiency of 81.6\% at an ultra-high current density of 320 mA cm−2, surpassing the values reported in previous studies. The energy efficiency remains above 84\% after 375 cycles at a current density of 240 mA cm−2. Molecular dynamics simulations verify the enhanced adsorption effect of LDH materials on active ions, thus facilitating ion transport in the battery. This study provides a novel approach to improve mass transport in electrodes for alkaline flow batteries and other energy storage devices.",

keywords = "alkaline flow battery, energy storage, ion transport, layered double hydroxides, mesoporous materials",

author = "Pengfei Wang and Kun Zhang and Hao Li and Jing Hu and Menglian Zheng",

note = "Publisher Copyright: {\textcopyright} 2023 Wiley-VCH GmbH.",

year = "2024",

month = jun,

doi = "10.1002/smll.202308791",

language = "English",

volume = "20",

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Enhanced Ion Transport Through Mesopores Engineered with Additional Adsorption of Layered Double Hydroxides Array in Alkaline Flow Batteries. / Wang, Pengfei; Zhang, Kun; Li, Hao et al.
In: Small, Vol. 20, No. 23, 2308791, 06.2024.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Enhanced Ion Transport Through Mesopores Engineered with Additional Adsorption of Layered Double Hydroxides Array in Alkaline Flow Batteries

AU - Wang, Pengfei

AU - Zhang, Kun

AU - Li, Hao

AU - Hu, Jing

AU - Zheng, Menglian

PY - 2024/6

Y1 - 2024/6

N2 - Efficient mass transfer in electrodes is essential for the electrochemical processes of battery charge and discharge, especially at high rates and capacities. This study introduces a 3D electrode design featuring layered double hydroxides (LDHs) nanosheets array grown in situ on a carbon felt surface for flow batteries. The mesoporous structure and surface characteristic of LDH nanosheets, especially, the hydroxyl groups forming a unique “H-bonding-like” geometry with ferrous cyanide ions, facilitate efficient adsorption and ion transport. Thus, the designed LDHs electrode enables the alkaline zinc-iron flow battery to maintain a voltage efficiency of 81.6% at an ultra-high current density of 320 mA cm−2, surpassing the values reported in previous studies. The energy efficiency remains above 84% after 375 cycles at a current density of 240 mA cm−2. Molecular dynamics simulations verify the enhanced adsorption effect of LDH materials on active ions, thus facilitating ion transport in the battery. This study provides a novel approach to improve mass transport in electrodes for alkaline flow batteries and other energy storage devices.

AB - Efficient mass transfer in electrodes is essential for the electrochemical processes of battery charge and discharge, especially at high rates and capacities. This study introduces a 3D electrode design featuring layered double hydroxides (LDHs) nanosheets array grown in situ on a carbon felt surface for flow batteries. The mesoporous structure and surface characteristic of LDH nanosheets, especially, the hydroxyl groups forming a unique “H-bonding-like” geometry with ferrous cyanide ions, facilitate efficient adsorption and ion transport. Thus, the designed LDHs electrode enables the alkaline zinc-iron flow battery to maintain a voltage efficiency of 81.6% at an ultra-high current density of 320 mA cm−2, surpassing the values reported in previous studies. The energy efficiency remains above 84% after 375 cycles at a current density of 240 mA cm−2. Molecular dynamics simulations verify the enhanced adsorption effect of LDH materials on active ions, thus facilitating ion transport in the battery. This study provides a novel approach to improve mass transport in electrodes for alkaline flow batteries and other energy storage devices.

KW - alkaline flow battery

KW - energy storage

KW - ion transport

KW - layered double hydroxides

KW - mesoporous materials

UR - https://www.scopus.com/pages/publications/85179679246

U2 - 10.1002/smll.202308791

DO - 10.1002/smll.202308791

M3 - Journal article

C2 - 38096872

AN - SCOPUS:85179679246

SN - 1613-6810

VL - 20

JO - Small

JF - Small

IS - 23

M1 - 2308791

ER -

Enhanced Ion Transport Through Mesopores Engineered with Additional Adsorption of Layered Double Hydroxides Array in Alkaline Flow Batteries

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