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المؤلفChristian Randell, Arro
المؤلفMohamed, Assem Taha Ibrahim
المؤلفBensalah, Nasr
تاريخ الإتاحة2022-04-24T10:58:39Z
تاريخ النشر2022-03-31
اسم المنشورMaterials Today Communications
المعرّفhttp://dx.doi.org/10.1016/j.mtcomm.2022.103151
الاقتباسArro, Christian Randell, Assem Taha Ibrahim Mohamed, and Nasr Bensalah. "Impact of Ge content on the electrochemical performance of germanium oxide/germanium/reduced graphene (GeO2/Ge/r-GO) hybrid composite anodes for lithium-ion batteries." Materials Today Communications (2022): 103151.
الرقم المعياري الدولي للكتاب23524928
معرّف المصادر الموحدhttps://www.sciencedirect.com/science/article/pii/S2352492822000290
معرّف المصادر الموحدhttp://hdl.handle.net/10576/30249
الملخصHybrid composites between Germanium (Ge) and carbonaceous materials have been extensively studied due to the carbonaceous’ component’s ability to mitigate the intrinsic problems pertaining to Ge-based anodes. The mitigation of reduced cycling ability and rate capability allows for the unhindered benefit of higher capacities in Ge-carbonaceous composite anodes. Here, the effect of different Ge mass loading on electrochemical performance is studied on a GeO2/Ge/r-GO composite made using controlled microwave radiation of ball-milled Ge and sonicated dispersion of graphene Oxide (GO) as a lithium battery anode. The composite anode at Ge 25% showed greatest cycling retention with 91% after 100 cycles and an average specific capacity of 300 mAh/g (1600 mAh/g Ge). At 75% Ge mass loading the anode suffered with limited cycling retention of 57.5% at the cost of greater specific capacities. The composite at 50% Ge attained advantageous characteristics of both composites with a stable cycling performance of 71.4% after 50 cycles and an average specific capacity of 400 mAh/g (1067 mAh/g Ge, all conducted at a current density of 100 mA/g). A positive linear correlation is revealed for increasing Ge mass loadings and specific capacities in Ge-carbonaceous as anode materials.
راعي المشروعThis work was funded by a grant from the Qatar University under its Collaborative Grant number QUCG-CAS-20/21-4. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of Qatar University. We wish to acknowledge the analysis provided by the Central Laboratories Unit (CLU) and Center for Advanced Materials (CAM) at Qatar University.
اللغةen
الناشرElsevier
الموضوعLi ion batteries
Ge-based anodes
Graphene oxide
Hybrid composites
Alloying/De-alloying
العنوانImpact of Ge content on the electrochemical performance of Germanium Oxide/Germanium/ reduced graphene (GeO2/Ge/r-GO) hybrid composite anodes for lithium-ion batteries
النوعArticle
رقم المجلد30
Open Access user License http://creativecommons.org/licenses/by/4.0/
dc.accessType Open Access


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