High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43933938" target="_blank" >RIV/60461373:22310/22:43933938 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838822002602?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838822002602?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2022.163869" target="_blank" >10.1016/j.jallcom.2022.163869</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability

Popis výsledku v původním jazyce

Typically, the high electrochemical performance of cathode materials is achieved by fine-tuning the surface morphology and particle size of the nano-electrode materials. Two-dimensional (2D) nanomaterials like nanoplates show astounding advantages of high surface area and shorter diffusion path-length, inducing improved Li-ion kinetics compared to bulk and 1D cathodes. This study reports the fabrication of 2D-nanoplates of LiMn1.5Ni0.5O4 via the solid-state method using α-MnO2 nanorods prepared from EMD, as a highly stable and long-cycle life cathode for lithium-ion battery (LIBs) applications. The fabricated 2D-LMNO nanoplates delivered an exceptional specific capacity of 88 mAh g−1 at a high current rate of 1 C and 98% retention of its initial capacity upon 1000 consecutive cycles. The nanoplates rendered a specific capacity of 77 mAh g−1 even at a high current rate of 7 C. The aligned LMNO stacked nanoplates with exposed {111} facets, and large Mn4+ concentration revealed high lithium-ion coefficient, decreased Mn dissolution, and high interfacial stability, which resulted in enhanced cycle stability and rate capability. The remarkable electrochemical performance of the LMNO cathode was attributed to its unique 2D-nanoplates structure, which is favourable for accommodating volume changes during the repeated insertion and de-insertion of lithium ions. © 2022 Elsevier B.V.

Název v anglickém jazyce

High rate and stable capacity performance of 2D LiMn1.5Ni0.5O4 nanoplates cathode with ultra-long cycle stability

Popis výsledku anglicky

Typically, the high electrochemical performance of cathode materials is achieved by fine-tuning the surface morphology and particle size of the nano-electrode materials. Two-dimensional (2D) nanomaterials like nanoplates show astounding advantages of high surface area and shorter diffusion path-length, inducing improved Li-ion kinetics compared to bulk and 1D cathodes. This study reports the fabrication of 2D-nanoplates of LiMn1.5Ni0.5O4 via the solid-state method using α-MnO2 nanorods prepared from EMD, as a highly stable and long-cycle life cathode for lithium-ion battery (LIBs) applications. The fabricated 2D-LMNO nanoplates delivered an exceptional specific capacity of 88 mAh g−1 at a high current rate of 1 C and 98% retention of its initial capacity upon 1000 consecutive cycles. The nanoplates rendered a specific capacity of 77 mAh g−1 even at a high current rate of 7 C. The aligned LMNO stacked nanoplates with exposed {111} facets, and large Mn4+ concentration revealed high lithium-ion coefficient, decreased Mn dissolution, and high interfacial stability, which resulted in enhanced cycle stability and rate capability. The remarkable electrochemical performance of the LMNO cathode was attributed to its unique 2D-nanoplates structure, which is favourable for accommodating volume changes during the repeated insertion and de-insertion of lithium ions. © 2022 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

<a href="/cs/project/EF20_079%2F0017899" target="_blank" >EF20_079/0017899: Chemical Fellows IV</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

903

Číslo periodika v rámci svazku

May 2022

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

163869

Kód UT WoS článku

000749748100003

EID výsledku v databázi Scopus

2-s2.0-85123623382