High-energy all-solid-state lithium batteries enabled by Co-free LiNiO2 cathodes with robust outside-in structures

Longlong Wang, Ayan Mukherjee, Chang Yang Kuo, Sankalpita Chakrabarty, Reut Yemini, Arrelaine A. Dameron, Jaime W. DuMont, Sri Harsha Akella, Arka Saha, Sarah Taragin, Hagit Aviv, Doron Naveh, Daniel Sharon, Ting Shan Chan, Hong Ji Lin, Jyh Fu Lee, Chien Te Chen, Boyang Liu, Xiangwen Gao, Suddhasatwa BasuZhiwei Hu*, Doron Aurbach*, Peter G. Bruce, Malachi Noked*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A critical current challenge in the development of all-solid-state lithium batteries (ASSLBs) is reducing the cost of fabrication without compromising the performance. Here we report a sulfide ASSLB based on a high-energy, Co-free LiNiO2 cathode with a robust outside-in structure. This promising cathode is enabled by the high-pressure O2 synthesis and subsequent atomic layer deposition of a unique ultrathin LixAl yZn zOδ protective layer comprising a LixAlyZnzOδ surface coating region and an Al and Zn near-surface doping region. This high-quality artificial interphase enhances the structural stability and interfacial dynamics of the cathode as it mitigates the contact loss and continuous side reactions at the cathode/solid electrolyte interface. As a result, our ASSLBs exhibit a high areal capacity (4.65 mAh cm−2), a high specific cathode capacity (203 mAh g−1), superior cycling stability (92% capacity retention after 200 cycles) and a good rate capability (93 mAh g−1 at 2C). This work also offers mechanistic insights into how to break through the limitation of using expensive cathodes (for example, Co-based) and coatings (for example, Nb-, Ta-, La- or Zr-based) while still achieving a high-energy ASSLB performance.

Original languageEnglish
JournalNature nanotechnology
DOIs
StateAccepted/In press - 2023

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