期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 115, 期 22, 页码 5670-5675出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1803576115
关键词
aluminum batteries; ionic liquids; operando X-ray diffraction; low temperature; energy storage
资金
- US Department of Energy [DE-SC0016165]
- Global Networking Talent 3.0 plan [National Taiwan University of Science and Technology (NTUST) from the Ministry of Education of Taiwan, the Wallenberg Foundation Postdoctoral Scholarship Program on Environment and Energy The Stig Hagstrom stipend [The [2013.0076]
- Taishan Scholar Project of Shandong Province of China [tsqn20161025]
We investigated rechargeable aluminum (Al) batteries composed of an Al negative electrode, a graphite positive electrode, and an ionic liquid (IL) electrolyte at temperatures down to -40 degrees C. The reversible battery discharge capacity at low temperatures could be superior to that at room temperature. In situ/operando electrochemical and synchrotron X-ray diffraction experiments combined with theoretical modeling revealed stable AlCl4-/graphite intercalation up to stage 3 at low temperatures, whereas intercalation was reversible up to stage 4 at room temperature (RT). The higher- degree anion/graphite intercalation at low temperatures affords rechargeable Al battery with higher discharge voltage (up to 2.5 V, a record for Al battery) and energy density. A remarkable cycle life of >20,000 cycles at a rate of 6C (10 minutes charge time) was achievable for Al battery operating at low temperatures, corresponding to a > 50-year battery life if charged/discharged once daily.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据