We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Highly Thermal Conductive Separator with In‐Built Phosphorus Stabilizer for Superior Ni‐Rich Cathode Based Lithium Metal Batteries.
- Authors
Zuo, Lan‐Lan; Ma, Qiang; Li, Shi‐Cai; Lin, Ben‐Cai; Fan, Min; Meng, Qing‐Hai; Wu, Xiong‐Wei; Guo, Yu‐Guo; Zeng, Xian‐Xiang
- Abstract
The movement toward cobalt‐free cathode materials has served as a motivation for increased research in layered nickel‐rich cathodes for next generation metal batteries. Unfortunately, Ni‐rich cathode materials suffer from low capacity retention and poor thermal stability due to phase transition that results in issues such as the oxygen evolution reaction, hindering its extensive implementation. Herein, highly pliable separators with a 3D porous structure are prepared via a facile phase‐inversion method from an inorganic phosphorus‐based flame retardant and a thermally conductive graphene oxide additive. Benefiting from its 3D porous structure, in‐built radical scavenger, and uniform thermal distribution, the obtained separator enables a near‐single Li+ migration (tLi+ = 0.8) by blocking large‐size anions, driving the LiNi0.8Mn0.1Co0.1O2/Li metal batteries to 188.8 mAh g−1 at 0.2 C, and demonstrating a capacity retention of 82.2% versus 41.4% for commercial polyolefin separators after 200 cycles, as well as excellent dendrite‐suppressing capabilities by reducing localized temperature hotspots and enabling sufficient mass transfer. This work also suggests a new alternative pathway for stabilizing reactive electrode materials for other high‐energy battery systems.
- Subjects
LITHIUM cells; FIRE resistant polymers; POROUS metals; CATHODES; OXYGEN evolution reactions; MASS transfer; FIREPROOFING agents
- Publication
Advanced Energy Materials, 2021, Vol 11, Issue 3, p1
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.202003285