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Inward growth of superthin TiC skin on carbon nanotube framework as stable cathode support for Li-O-2 batteries
Yang, CS; Sun, Z; Cui, ZH; Jianga, FL; Denga, JW; Zhang, T
2020-09-01
Source PublicationENERGY STORAGE MATERIALS
ISSN2405-8297
Pages59
SubtypeArticle
AbstractThe rational design and synthetic route to fabricate stable air cathode supports, which combine high electron conductivity and desirable superoxide anion radical species (O2-)-against stability, remain critical but still challenging for sustainable Li-O-2 batteries. Herein, a method of inward vapor-solid growth is proposed to prepare superthin TiC skin on mull-walled carbon nanotubes framework (MWNTs) as stable support (TiC/MWNTs) for air cathodes. By adjusting reaction temperature and time, the sp2-hybrid carbon walls of MWNTs are transformed into dense TiC skins layer by layer from outside to inside. The thickness of the transformed TiC skin can be controlled at a superthin nanosized magnitude of 3 nm. Benefiting from the seamless TiC surface layer, the TiC/MWNTs possesses both the advantages of MWNTs framework (light mass and high electronic conductivity) and TiC skin (excellent O2--against stability). Besides, by loading the catalyst of Ru nanoparticles on the obtained TiC/MWNTs support, the Li-O-2 battery exhibits long-term cyclability (90 cycles) with little by-products (Li2CO3). The inward growth method is demonstrated to be also effective for graphene sheets and the conventional carbon blacks of Ketjenblack (KB). This achievement provides a new approach for surface enhancement of carbon electrodes from universal electrolyte corrosion problems.
DOI10.1016/j.ensm.2020.04.018
WOS KeywordLITHIUM-OXYGEN BATTERY ; ELECTRODE ; FILMS ; EFFICIENCY ; COMPOSITE ; SOLVENTS ; CATALYST ; ANODE
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27797
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Yang, CS,Sun, Z,Cui, ZH,et al. Inward growth of superthin TiC skin on carbon nanotube framework as stable cathode support for Li-O-2 batteries[J]. ENERGY STORAGE MATERIALS,2020:59.
APA Yang, CS,Sun, Z,Cui, ZH,Jianga, FL,Denga, JW,&Zhang, T.(2020).Inward growth of superthin TiC skin on carbon nanotube framework as stable cathode support for Li-O-2 batteries.ENERGY STORAGE MATERIALS,59.
MLA Yang, CS,et al."Inward growth of superthin TiC skin on carbon nanotube framework as stable cathode support for Li-O-2 batteries".ENERGY STORAGE MATERIALS (2020):59.
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