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

Moonsu Yoon, Yanhao Dong, Jaeseong Hwang, Jaekyung Sung, Hyungyeon Cha, Kihong Ahn, Yimeng Huang, Seok Ju Kang, Ju Li () and Jaephil Cho ()
Additional contact information
Moonsu Yoon: Ulsan National Institute of Science and Technology (UNIST)
Yanhao Dong: Massachusetts Institute of Technology
Jaeseong Hwang: Ulsan National Institute of Science and Technology (UNIST)
Jaekyung Sung: Ulsan National Institute of Science and Technology (UNIST)
Hyungyeon Cha: Ulsan National Institute of Science and Technology (UNIST)
Kihong Ahn: Ulsan National Institute of Science and Technology (UNIST)
Yimeng Huang: Massachusetts Institute of Technology
Seok Ju Kang: Ulsan National Institute of Science and Technology (UNIST)
Ju Li: Massachusetts Institute of Technology
Jaephil Cho: Ulsan National Institute of Science and Technology (UNIST)

Nature Energy, 2021, vol. 6, issue 4, 362-371

Abstract: 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.

Date: 2021
References: Add references at CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
https://www.nature.com/articles/s41560-021-00782-0 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:6:y:2021:i:4:d:10.1038_s41560-021-00782-0

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-021-00782-0

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().