Anode‐Free Rechargeable Lithium Metal Batteries |
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| Authors: | Jiangfeng Qian Brian D. Adams Jianming Zheng Wu Xu Wesley A. Henderson Jun Wang Mark E. Bowden Suochang Xu Jianzhi Hu Ji‐Guang Zhang |
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| Affiliation: | 1. The Joint Center for Energy Storage Research (JCESR), Pacific Northwest National Laboratory, Richland, WA, USA;2. Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, USA;3. A123 Systems Research and Development, Waltham, MA, USA;4. Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA;5. Earth and Biological Science Directorate, Pacific Northwest National Laboratory, Richland, WA, USA |
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| Abstract: | Anode‐free rechargeable lithium (Li) batteries (AFLBs) are phenomenal energy storage systems due to their significantly increased energy density and reduced cost relative to Li‐ion batteries, as well as ease of assembly because of the absence of an active (reactive) anode material. However, significant challenges, including Li dendrite growth and low cycling Coulombic efficiency (CE), have prevented their practical implementation. Here, an anode‐free rechargeable lithium battery based on a Cu||LiFePO4 cell structure with an extremely high CE (>99.8%) is reported for the first time. This results from the utilization of both an exceptionally stable electrolyte and optimized charge/discharge protocols, which minimize the corrosion of the in situly formed Li metal anode. |
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| Keywords: | anode‐free batteries cycling stability dendrites lithium corrosion lithium metal |
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