Lithium Isotope Effects upon Electrochemical Release from Lithium Manganese Oxide
Year: 2015
Type: conference-paper
Abstract: Lithium was electrochemically released from lithium manganese oxide (LiMn 2 O 4 ) to an electrolyte solution, a 1:2 v/v mixed solution of ethylene carbonate (EC) and ethylmethyl carbonate (EMC) containing 1 M lithium perchlorate or sodium perchlorate (EC/EMC/LiClO 4 or EC/EMC/NaClO 4 ) to observe the lithium isotope effects that accompanied the lithium release. The lighter isotope of lithium, 6 Li, was preferentially fractionated to the electrolyte solution phase, with the value of the lithium isotope separation factor ranging from 0.989 to 0.971 at 25 °C. The degree of the lithium isotope fractionation was slightly smaller in the LiMn 2 O 4 -EC/EMC/NaClO 4 system than in the LiMn 2 O 4 -EC/EMC/LiClO 4 system. The present systems are in great contrast with the lithium cobalt oxide (LiCoO 2 )-the electrolyte solution systems concerning the direction and magnitude of the lithium isotope effects, which seems mostly ascribable to the structural difference between LiMn 2 O 4 and LiCoO 2。
Source: Energy Procedia
Authors: Koji Okano, Yuta Takami, Satoshi Yanase, Takao Oi
Institution: Sophia University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W610476325