학술논문
High-energy all-solid-state lithium batteries enabled by Co-free LiNiO2cathodes with robust outside-in structures
Document Type
Article
Author
Wang, Longlong; Mukherjee, Ayan; Kuo, Chang-Yang; Chakrabarty, Sankalpita; Yemini, Reut; Dameron, Arrelaine A.; DuMont, Jaime W.; Akella, Sri Harsha; Saha, Arka; Taragin, Sarah; Aviv, Hagit; Naveh, Doron; Sharon, Daniel; Chan, Ting-Shan; Lin, Hong-Ji; Lee, Jyh-Fu; Chen, Chien-Te; Liu, Boyang; Gao, Xiangwen; Basu, Suddhasatwa; Hu, Zhiwei; Aurbach, Doron; Bruce, Peter G.; Noked, Malachi
Source
Nature Nanotechnology; 20230101, Issue: Preprints p1-11, 11p
Subject
Language
ISSN
17483387; 17483395
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 LiNiO2cathode with a robust outside-in structure. This promising cathode is enabled by the high-pressure O2synthesis and subsequent atomic layer deposition of a unique ultrathin LixAlyZnzOδprotective layer comprising a LixAlyZnzOδsurface 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−1at 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.