Theoretical investigation of lithium ions' nucleation performance on metal-doped Cu surfaces

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F19%3A10242879" target="_blank" >RIV/61989100:27740/19:10242879 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2095495618312683?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2095495618312683?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jechem.2019.01.021" target="_blank" >10.1016/j.jechem.2019.01.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Theoretical investigation of lithium ions' nucleation performance on metal-doped Cu surfaces

Popis výsledku v původním jazyce

Lithium metal batteries (LMBs) of an ultrahigh theoretical energy density have attracted lots of attentions for a wide range of practical applications. However, there are still numerous challenges in LMBs system, such as poor cycling performance, complicated interfacial reactions, low Coulombic efficiency, and uncontrollable lithium dendrites. Understanding Li+ ions&apos; nucleation mechanism is essential to tackle the uncontrolled growth of lithium dendrites. However, the nucleation behavior of Li+ ions is interfered by the structural complexities of existing substrates during the reduplicative plating/stripping process and the rational mechanism of uniform nucleation of Li+ ions has not been clearly understood from the theoretical point of view. In our work, first-principles theoretical calculations are carried out to investigate the Li+ ions nucleation performance on metal-doped Cu surfaces (MDCSs) and the key descriptors that determines the properties of various MDCSs are systematically summarized. It is found that the introduction of heterogeneous doping Ag and Zn atoms will induce a gradient adsorption energy on MDCSs, and such gradient deposition sites can reduce the diffusion barriers and accelerate the diffusion rates of Li+ ions dynamically. By maneuvering the Li+ ions nucleation on MDCSs, a dendrite-free lithium metal anode can be achieved without the use of porous matrixes and complex synthesis process, which can be attributed to suppress the uncontrollable lithium dendrites for realizing the high-efficiency LMBs. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

Název v anglickém jazyce

Theoretical investigation of lithium ions' nucleation performance on metal-doped Cu surfaces

Popis výsledku anglicky

Lithium metal batteries (LMBs) of an ultrahigh theoretical energy density have attracted lots of attentions for a wide range of practical applications. However, there are still numerous challenges in LMBs system, such as poor cycling performance, complicated interfacial reactions, low Coulombic efficiency, and uncontrollable lithium dendrites. Understanding Li+ ions&apos; nucleation mechanism is essential to tackle the uncontrolled growth of lithium dendrites. However, the nucleation behavior of Li+ ions is interfered by the structural complexities of existing substrates during the reduplicative plating/stripping process and the rational mechanism of uniform nucleation of Li+ ions has not been clearly understood from the theoretical point of view. In our work, first-principles theoretical calculations are carried out to investigate the Li+ ions nucleation performance on metal-doped Cu surfaces (MDCSs) and the key descriptors that determines the properties of various MDCSs are systematically summarized. It is found that the introduction of heterogeneous doping Ag and Zn atoms will induce a gradient adsorption energy on MDCSs, and such gradient deposition sites can reduce the diffusion barriers and accelerate the diffusion rates of Li+ ions dynamically. By maneuvering the Li+ ions nucleation on MDCSs, a dendrite-free lithium metal anode can be achieved without the use of porous matrixes and complex synthesis process, which can be attributed to suppress the uncontrollable lithium dendrites for realizing the high-efficiency LMBs. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Energy Chemistry

ISSN

2095-4956

e-ISSN

—

Svazek periodika

39

Číslo periodika v rámci svazku

39

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

160-169

Kód UT WoS článku

000492693900016

EID výsledku v databázi Scopus

—