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Structurally stabilized lithium-metal anode via surface chemistry engineering

Title
Structurally stabilized lithium-metal anode via surface chemistry engineering
Authors
Lee, JaewooChoi, Seung HyunQutaish, HamzehHyeon, YuhwanHan, Sang AHeo, Yoon-UKWhang, DongmokLee, Jong-WonMoon, JanghyukPark, Min-SikKim, Jung HoDou, Shi Xue
DGIST Authors
Lee, Jaewoo; Choi, Seung Hyun; Qutaish, Hamzeh; Hyeon, Yuhwan; Han, Sang A; Heo, Yoon-UK; Whang, Dongmok; Lee, Jong-Won; Moon, Janghyuk; Park, Min-Sik; Kim, Jung Ho; Dou, Shi Xue
Issue Date
2021-05
Citation
Energy Storage Materials, 37, 315-324
Type
Article
Author Keywords
Lithium-metal anodeMesoporous hostLithiophilicityNanoarchitecture
ISSN
2405-8297
Abstract
Dendrite-free lithium (Li) has been the primary issue for the practical application of metallic Li anode. Repeated Li plating/stripping is known to inevitably lead to severe volume changes and gradual Li dendrite growth, eventually resulting in irreversible Li (called dead-Li) as an unexpected feature. In order to avoid the dead-Li, a lithiophilic surface is highly desirable and a nanoarchitectured host for metallic Li is also required. Herein, cobalt-embedded, mesoporous, nitrogen-doped graphite (N-doped graphite) is strategically proposed as a new innovative Li-metal storage host. After tuning the surface chemistry, the material shows high Li ion affinity as well as a highly lithiophilic surface, which is attributed to the low formation energy of N-doped graphite, strongly supported by density functional theory calculations. As a result, the desirable anode shows excellent electrochemical performance with high Li-metal reversible capacity and even stable long-term cyclability with no dead-Li formation. Our findings pave the way to optimize the Li-metal host up to the limit of the theoretical capacity. © 2021
URI
http://hdl.handle.net/20.500.11750/13817
DOI
10.1016/j.ensm.2021.02.019
Publisher
Elsevier BV
Related Researcher
  • Author Lee, Jong-Won Laboratory for Electrochemical Energy Materials and Interfaces
  • Research Interests 이차전지, 연료전지, 재료전기화학, 나노에너지소재
Files:
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Collection:
Department of Energy Science and EngineeringLaboratory for Electrochemical Energy Materials and Interfaces1. Journal Articles


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