Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
In-situ total Li depth profiling of solid state Li ion batteries under charging and discharging by means of transmission elastic recoil detection analysis with 5 MeV He2+ ions
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms ( IF 1.4 ) Pub Date : 2020-08-10 , DOI: 10.1016/j.nimb.2020.07.018
K. Morita , B. Tsuchiya , R. Ye , H. Tsuchida , T. Majima

Total Li depth profiles in Ti/NbO/LiPON/LMO batteries prepared on self-supporting Al and Ti substrates have been measured under charging and discharging by means of TERD and RBS techniques. Since TERD spectrum for as-received specimen of Ti/NbO/LiPON/LMO/Al showed that Li diffused from LMO to NbO during its preparation, at first, the discharging was performed by biasing at −0.5 V. Hereafter, the charging was performed at 3.2 V. TERD spectra under discharging clearly showed that Li in NbO was reduced and that in LMO and Al near LMO was enriched and more over Li in LiPON was reduced near NbO, while that was enriched near LMO. TERD spectra under charging also clearly showed ‘vice versa’ that Li in LMO and Al near LMO was reduced and that in NbO was enriched. Ti/NbO/LiPON/LMO/Ti was also charged and hereafter discharged. It was found that this battery was also rechargeable at one cycle.



中文翻译:

利用5 MeV He 2+离子的传输弹性反冲检测分析固态锂离子电池充放电时的原位总锂深度分布

通过TERD和RBS技术在充电和放电条件下测量了在自支撑式Al和Ti衬底上制备的Ti / NbO / LiPON / LMO电池中的总Li深度分布。由于Ti / NbO / LiPON / LMO / Al样品的TERD光谱显示在制备过程中Li从LMO扩散到NbO,首先,通过在-0.5 V偏压进行放电。此后,进行充电在3.2 V下放电时的TERD光谱清楚地表明,NbO中的Li减少,LMO和LMO附近的Al中的锂富集,而LiPON中LiPON在Lib中附近的更多Li还原,而LPON附近的Li富集。充电后的TERD光谱也清楚地表明“反之亦然”,即LMO中的Li和LMO附近的Al被还原,NbO中的Li被富集。Ti / NbO / LiPON / LMO / Ti也被充电,此后被放电。

更新日期:2020-08-11
down
wechat
bug