文献类型：期刊文献

英文题名：High mass loading, binder-free MXene anodes for high areal capacity Li-ion batteries

作者：Kim, Seon Joon[1,2,3];Naguib, Michael[1,2];Zhao, Mengqiang[1,2];Zhang, Chuanfang[1,2,4];Jung, Hee-Tae[3];Barsoum, Michel W.[1,2];Gogotsi, Yury[1,2]

机构：[1]Drexel Univ, AJ Drexel Nanomat Inst, Philadelphia, PA 19104 USA;[2]Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA;[3]Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn Bk Plus 21, Taejon 305701, South Korea;[4]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：163

起止页码：246

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20150900587952);WOS:【SCI-EXPANDED(收录号:WOS:000352496700032)】；

基金：The authors are thankful to Dr. Babak Anasori and Zheng Ling for helpful discussions, MAX phase synthesis and help with SEM analysis, and Dr. Chunfeng Hu, Michael Ghidiu for XRD analysis. The authors also thank Prof. Patrice Simon (Paul Sabatier University) for helpful comments on battery separators. S. J. K. acknowledges support from the BK-21 Plus program. This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, subcontract No. 6951370, under the Batteries for Advanced Transportation Technologies (BATT) Program.

语种：英文

外文关键词：MXene; 2D carbide; Li-ion Battery; Anode; Areal capacity

摘要：Though anodes with high Li gravimetric capacities, beyond commercial graphite, have been intensively studied, gravimetric capacity does not precisely reflect the performance of a packed cell. Li anodes with high mass loadings, which can achieve high areal capacities, are required for many commercial applications. Herein, anodes with high mass loadings were fabricated using two-dimensional transition metal carbides (MXenes). Powders of the latter were cold pressed, without binders, at a pressure of 1 GPa, to create similar to 300 mm thick, free-standing discs. When Ti3C2 was used as the anode for lithium, the initial reversible areal capacity was similar to 15 mu Ah/cm(2), which decreased to 5.9 mAh/cm(2) after 50 cycles, but the decrease after the first similar to 20 cycles was very gradual. The latter is one of the highest values ever reported to date. When Nb2C was used as the anode instead, the initial reversible capacity was similar to 16 mAh/cm(2); this value decreased to 6.7 mAh/cm(2) after 50 cycles, which is about a 14% increase compared to Ti3C2. As the research on MXenes for lithium ion batteries has just begun, there is certainly room for further improving their electrochemical performance. (C) 2015 Elsevier Ltd. All rights reserved.