An Azamacrocyclic Ligand-Functionalized Transition-Metal Scavenging Polymer for 5.0 V Class High-Energy Lithium-Ion Batteries
Source abstract
Abstract
The electrochemical performance of 5.0 V class full cells comprising LiNi0.5Mn1.5O4-graphite is improved by applying metal scavenging coats on the negative electrode surface. To achieve this transition-metal scavenging ability, a tetradentate azamacrocyclic ligand is introduced into a poly(vinyl alcohol) (PVA) backbone through a one-step esterification reaction. The azamacrocyclic ligand-functionalized PVA scavenged five times as many metal ions as that of the pristine polymer counterpart. Due to this scavenging ability, the Coulombic efficiency and cyclability are greatly enhanced in a LiNi0.5Mn1.5O4/functionalized graphite cell composition. Consequently, the increase in discharge resistance during cycles was well retained due to the introduction of this functional polymer on the negative electrode surface.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Advanced Batteries Research Center, Korea Electronics Technology Institute, Seongnam 463-816, Republic of Korea
Graduate School of Knowledge-based Technology and Energy, Korea Polytechnic University, 237 Sangidaehak-ro, Siheung-si, Gyeonggi-do 15073, Republic of Korea
Funding
Korea Electric Power Corporation · Korea Institute for Advancement of Technology
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