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DOI10.1039/d0ee03967e
High transference number enabled by sulfated zirconia superacid for lithium metal batteries with carbonate electrolytes
Woo S.-G.; Hwang E.-K.; Kang H.-K.; Lee H.; Lee J.-N.; Kim H.-S.; Jeong G.; Yoo D.-J.; Lee J.; Kim S.; Yu J.-S.; Choi J.W.
发表日期2021
ISSN17545692
起始页码1420
结束页码1428
卷号14期号:3
英文摘要The prospect of increasing the energy density has promoted research on lithium metal batteries. Yet, avoiding the uncontrolled growth of lithium dendrites and the resulting interfacial instability to ensure the practical viability of the given battery technology remains a considerable challenge. Here, we report coating the separator with sulfated zirconia superacid to achieve a high lithium ion transference number of 0.85 and excellent cycle life when a full-cell paired with a LiNi0.82Co0.07Mn0.11O2 cathode was tested in a carbonate electrolyte under practical operating conditions. The exceptionally high transference number is attributed to strengthened binding of the PF6- anion of the lithium salt with the superacid. Furthermore, the presence of the superacid induces a mechanically stable solid-electrolyte-interphase (SEI) layer rich in LixPOyFz. This study demonstrates the beneficial effect of the superacid on emerging post-lithium-ion batteries by immobilizing the anion of the salt as well as modifying the SEI composition. © 2021 The Royal Society of Chemistry.
英文关键词Acids; Cobalt compounds; Ions; Lithium-ion batteries; Manganese compounds; Nickel compounds; Solid electrolytes; Zirconia; Battery technology; Carbonate electrolytes; Interfacial instability; Lithium ion transference number; Mechanically stable; Practical operating conditions; Solid electrolyte interphase layer (SEI); Transference number; Lithium compounds; carbonate; electrolyte; lithium; zirconium
语种英语
来源期刊Energy & Environmental Science
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/190749
作者单位Advanced Batteries Research Center, Korea Electronics Technology Institute, 25 Saenari-ro, Bundang-gu, Seongnam, Gyeonggi, 13509, South Korea; School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea; Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
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GB/T 7714
Woo S.-G.,Hwang E.-K.,Kang H.-K.,et al. High transference number enabled by sulfated zirconia superacid for lithium metal batteries with carbonate electrolytes[J],2021,14(3).
APA Woo S.-G..,Hwang E.-K..,Kang H.-K..,Lee H..,Lee J.-N..,...&Choi J.W..(2021).High transference number enabled by sulfated zirconia superacid for lithium metal batteries with carbonate electrolytes.Energy & Environmental Science,14(3).
MLA Woo S.-G.,et al."High transference number enabled by sulfated zirconia superacid for lithium metal batteries with carbonate electrolytes".Energy & Environmental Science 14.3(2021).
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