Dynamic Lithium Distribution upon Dendrite Growth and Shorting Revealed by Operando Neutron Imaging

Bohang Song; Indu Dhiman; John C. Carothers; Gabriel M. Veith; Jue Liu; Hassina Z. Bilheux; Ashfia Huq

doi:10.1021/acsenergylett.9b01652

Dynamic Lithium Distribution upon Dendrite Growth and Shorting Revealed by Operando Neutron Imaging

Bohang Song, Indu Dhiman, John C. Carothers, Gabriel M. Veith, Jue Liu, Hassina Z. Bilheux, Ashfia Huq

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

81 Scopus citations

Abstract

Lithium (Li) metal has the highest theoretical capacity and is essential for energy storage technologies beyond conventional Li chemistries. However, its utilization inevitably leads to dendrite growth from repeated plating and stripping, eventually shorts the battery. The process that leads to shorting and the consequential electrochemical impacts are not well understood due to its dynamic features. Herein, we apply neutron radiography to study the Li dendrite growth in real time. The dynamic distribution of Li flowing from the anode to cathode during charge, induced by the internal short circuit due to Li dendrite growth, has been observed. Furthermore, a competing mechanism after battery shorting between the short-induced self-discharge and charge is proposed to explain the voltage drop/rise during the extended charging time. Our work provides mechanistic insights with a deep understanding of dendrite Li shorting and redistribution. This can lead to safe design principles of Li metal electrodes in batteries.

Original language	English
Pages (from-to)	2402-2408
Number of pages	7
Journal	ACS Energy Letters
DOIs	https://doi.org/10.1021/acsenergylett.9b01652
State	Published - Aug 1 2019

Funding

We thank Dr. Louis Santodonato for assistance on the experimental setup. This research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory (B.S., I.D., J.L., H.Z.B., A.H.). Electrochemistry was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences (BES), Chemical Sciences Division (G.M.V.). The 7 Li used in this research was supplied by the United States Department of Energy Office of Science by the Isotope Program in the Office of Nuclear Physics.

Funders	Funder number
U.S. Department of Energy
Office of Science
Basic Energy Sciences

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsenergylett.9b01652

Cite this

@article{2afd9ef919b24f8390a8da75076a75da,

title = "Dynamic Lithium Distribution upon Dendrite Growth and Shorting Revealed by Operando Neutron Imaging",

abstract = "Lithium (Li) metal has the highest theoretical capacity and is essential for energy storage technologies beyond conventional Li chemistries. However, its utilization inevitably leads to dendrite growth from repeated plating and stripping, eventually shorts the battery. The process that leads to shorting and the consequential electrochemical impacts are not well understood due to its dynamic features. Herein, we apply neutron radiography to study the Li dendrite growth in real time. The dynamic distribution of Li flowing from the anode to cathode during charge, induced by the internal short circuit due to Li dendrite growth, has been observed. Furthermore, a competing mechanism after battery shorting between the short-induced self-discharge and charge is proposed to explain the voltage drop/rise during the extended charging time. Our work provides mechanistic insights with a deep understanding of dendrite Li shorting and redistribution. This can lead to safe design principles of Li metal electrodes in batteries.",

author = "Bohang Song and Indu Dhiman and Carothers, {John C.} and Veith, {Gabriel M.} and Jue Liu and Bilheux, {Hassina Z.} and Ashfia Huq",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = aug,

day = "1",

doi = "10.1021/acsenergylett.9b01652",

language = "English",

pages = "2402--2408",

journal = "ACS Energy Letters",

issn = "2380-8195",

publisher = "American Chemical Society",

}

TY - JOUR

T1 - Dynamic Lithium Distribution upon Dendrite Growth and Shorting Revealed by Operando Neutron Imaging

AU - Song, Bohang

AU - Dhiman, Indu

AU - Carothers, John C.

AU - Veith, Gabriel M.

AU - Liu, Jue

AU - Bilheux, Hassina Z.

AU - Huq, Ashfia

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Lithium (Li) metal has the highest theoretical capacity and is essential for energy storage technologies beyond conventional Li chemistries. However, its utilization inevitably leads to dendrite growth from repeated plating and stripping, eventually shorts the battery. The process that leads to shorting and the consequential electrochemical impacts are not well understood due to its dynamic features. Herein, we apply neutron radiography to study the Li dendrite growth in real time. The dynamic distribution of Li flowing from the anode to cathode during charge, induced by the internal short circuit due to Li dendrite growth, has been observed. Furthermore, a competing mechanism after battery shorting between the short-induced self-discharge and charge is proposed to explain the voltage drop/rise during the extended charging time. Our work provides mechanistic insights with a deep understanding of dendrite Li shorting and redistribution. This can lead to safe design principles of Li metal electrodes in batteries.

AB - Lithium (Li) metal has the highest theoretical capacity and is essential for energy storage technologies beyond conventional Li chemistries. However, its utilization inevitably leads to dendrite growth from repeated plating and stripping, eventually shorts the battery. The process that leads to shorting and the consequential electrochemical impacts are not well understood due to its dynamic features. Herein, we apply neutron radiography to study the Li dendrite growth in real time. The dynamic distribution of Li flowing from the anode to cathode during charge, induced by the internal short circuit due to Li dendrite growth, has been observed. Furthermore, a competing mechanism after battery shorting between the short-induced self-discharge and charge is proposed to explain the voltage drop/rise during the extended charging time. Our work provides mechanistic insights with a deep understanding of dendrite Li shorting and redistribution. This can lead to safe design principles of Li metal electrodes in batteries.

UR - http://www.scopus.com/inward/record.url?scp=85072901946&partnerID=8YFLogxK

U2 - 10.1021/acsenergylett.9b01652

DO - 10.1021/acsenergylett.9b01652

M3 - Article

AN - SCOPUS:85072901946

SN - 2380-8195

SP - 2402

EP - 2408

JO - ACS Energy Letters

JF - ACS Energy Letters

ER -

Dynamic Lithium Distribution upon Dendrite Growth and Shorting Revealed by Operando Neutron Imaging

Abstract

Funding

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this