Affiliation:
1. Frontiers Science Center for Flexible Electronics and Shaanxi Institute of Flexible Electronics Northwestern Polytechnical University Xi'an 710072 China
2. Fujian Cross‐Strait Institute of Flexible Electronics (Future Technologies) Fujian Normal University Fuzhou 350117 China
3. Key Laboratory of Flexible Electronics & Institute of Advanced Materials School of Flexible Electronics (Future Technologies) Nanjing Tech University Nanjing 211816 China
Abstract
AbstractLithium metal anodes (LMAs) offer substantial promise for high‐energy‐density rechargeable batteries, but managing the complex electrolyte–anode interface is a challenge. Herein, a sustainable dual‐layered interface (SDI) protected Li anode is developed using a joint electrospinning‐rolling technique. In this SDI, polyacrylonitrile (PAN) nanofibers normalize Li‐ion flux across the bulk electrolyte and mitigate electrode volume expansion. More significantly, the continuous release of lithiophilic metal ions aids in constructing alloy interphase in situ, which facilitates Li‐ion transport and uniform lithium deposition. With the dynamic protection of SDI films, cracks in the alloy layer can be promptly repaired during cycling, ensuring efficient control of the electrolyte–anode interface and prolonged stabilization of LMAs. As validation, using a PAN/SnCl2 film as an SDI prototype, the symmetric cells achieve ultra‐long cycling of 5200 h (≈7 months) at 5 mA cm−2 and 5 mAh cm−2. When paired with a sulfur cathode (in ether electrolyte) or a LiNi0.8Co0.1Mn0.1O2 cathode (in ester electrolyte), the full cells exhibit exceptional stability and rate performance. This sustainable protection strategy for LMAs opens a path to suppress dendrite growth, creating new opportunities for advanced lithium metal batteries.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Subject
General Materials Science,Renewable Energy, Sustainability and the Environment
Cited by
1 articles.
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