BROWSE

Related Researcher

Author's Photo

Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

ITEM VIEW & DOWNLOAD

Reactive boride infusion stabilizes Ni-rich cathodes for lithium-ion batteries

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Reactive boride infusion stabilizes Ni-rich cathodes for lithium-ion batteries
Author
Yoon, MoonsuDong, YanhaoHwang, JaeseongSung, JaekyungCha, HyungyeonAhn, KihongHuang, YimengKang, Seok JuLi, JuCho, Jaephil
Issue Date
2021-04
Publisher
NATURE RESEARCH
Citation
NATURE ENERGY, v.6, pp.362 - 371
Abstract
Engineered polycrystalline electrodes are critical to the cycling stability and safety of lithium-ion batteries, yet it is challenging to construct high-quality coatings at both the primary- and secondary-particle levels. Here we present a room-temperature synthesis route to achieve a full surface coverage of secondary particles and facile infusion into grain boundaries, and thus offer a complete 'coating-plus-infusion' strategy. Cobalt boride metallic glass was successfully applied to a Ni-rich layered cathode LiNi0.8Co0.1Mn0.1O2. It dramatically improved the rate capability and cycling stability, including under high-discharge-rate and elevated-temperature conditions and in pouch full-cells. The superior performance originates from a simultaneous suppression of the microstructural degradation of the intergranular cracking and of side reactions with the electrolyte. Atomistic simulations identified the critical role of strong selective interfacial bonding, which offers not only a large chemical driving force to ensure uniform reactive wetting and facile infusion, but also lowers the surface/interface oxygen activity, which contributes to the exceptional mechanical and electrochemical stabilities of the infused electrode. Coating is commonly used to improve electrode performance in batteries, but it is challenging to achieve and maintain complete coverage of electrode particles during cycling. Here the authors present a coating-and-infusion approach on Ni-rich cathodes that effectively retards stress corrosion cracking.
URI
https://scholarworks.unist.ac.kr/handle/201301/52543
URL
https://www.nature.com/articles/s41560-021-00782-0
DOI
10.1038/s41560-021-00782-0
ISSN
2058-7546
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU