A novel graphene oxide wrapped Na2Fe2(SO4)3/C cathode composite for long life and high energy density sodium‐ion batteries

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dc.contributor.authorChen, MZen_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorHu, Zen_AU
dc.contributor.authorJin, Hen_AU
dc.contributor.authorWang, Sen_AU
dc.contributor.authorGu, QFen_AU
dc.contributor.authorHua, WBen_AU
dc.contributor.authorWang, Een_AU
dc.contributor.authorLai, WHen_AU
dc.contributor.authorChen, Len_AU
dc.contributor.authorChou, SLen_AU
dc.contributor.authorWang, XLen_AU
dc.contributor.authorDou, SXen_AU
dc.date.accessioned2024-12-05T21:42:04Zen_AU
dc.date.available2024-12-05T21:42:04Zen_AU
dc.date.issued2018-08-06en_AU
dc.date.statistics2024-03-19en_AU
dc.description.abstractThe cathode materials in the Na‐ion battery system are always the key issue obstructing wider application because of their relatively low specific capacity and low energy density. A graphene oxide (GO) wrapped composite, Na2Fe2(SO4)3@C@GO, is fabricated via a simple freeze‐drying method. The as‐prepared material can deliver a 3.8 V platform with discharge capacity of 107.9 mAh g−1 at 0.1 C (1 C = 120 mA g−1) as well as offering capacity retention above 90% at a discharge rate of 0.2 C after 300 cycles. The well‐constructed carbon network provides fast electron transfer rates, and thus, higher power density also can be achieved (75.1 mAh g−1 at 10 C). The interface contribution of GO and Na2Fe2(SO4)3 is recognized and studied via density function theory calculation. The Na storage mechanism is also investigated through in situ synchrotron X‐ray diffraction, and pseudocapacitance contributions are also demonstrated. The diffusion coefficient of Na+ ions is around 10−12–10−10.8 cm2 s−1 during cycling. The higher working voltage of this composite is mainly ascribed to the larger electronegativity of the element S. The research indicates that this well‐constructed composite would be a competitive candidate as a cathode material for Na‐ion batteries. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA.en_AU
dc.description.sponsorshipThis work was supported by the Australian Automotive Cooperative Research Centre and the Malaysian Automotive Institute (AutoCRC/Malaysian Automotive Institute (MAI) Project Agreement 1-111: Development of Advanced Electrode and Electrolytes for the lithium ion battery), Australian Research Council (ARC DP160102627), Australian Renewable Energy Agency (ARENA S4) project, the Young Scientists Fund of National Natural Science Foundation of China (Grant No. 61504055), the National Natural Science Foundation of China (No. 21471116, 51641210, and 51772219), Natural Science Foundation of Zhejiang Province (No. LZ17E020002), and the Natural Science Foundation of Hunan Province (Grant No. 2015JJ3110). The authors would like to thank Dr. Gilberto Casillas-Garcia and Dr. David R. G. Mitchell for the STEM technique support and Dr. Tania Silver for critical reading of the paper. Part of the experiment was carried out at the Powder Diffraction Beamline, Australian Synchrotron.en_AU
dc.identifier.articlenumber1800944en_AU
dc.identifier.citationChen, M., Cortie, D., Hu, Z., Jin, H., Wang, S., Gu, Q., Hua, W., Wang, E., Lai, W., Chen, L., Chou, S.-L., Wang, X.-L., & Dou, S.-X. (2018). A novel graphene oxide wrapped Na2Fe2(SO4)3/C cathode composite for long life and high energy density sodium-ion batteries. advanced energy materials, 8(27), 1800944. doi:10.1002/aenm.201800944en_AU
dc.identifier.issn1614-6832en_AU
dc.identifier.issn1614-6840en_AU
dc.identifier.issue27en_AU
dc.identifier.journaltitleAdvanced Energy Materialsen_AU
dc.identifier.urihttps://doi.org/10.1002/aenm.201800944en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15783en_AU
dc.identifier.volume8en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherWileyen_AU
dc.subjectEnergy densityen_AU
dc.subjectSodium-sulfur batteriesen_AU
dc.subjectGrapheneen_AU
dc.subjectCathodesen_AU
dc.subjectNeural networksen_AU
dc.subjectMaterials testingen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectEnergy storage systemsen_AU
dc.subjectElectric batteriesen_AU
dc.titleA novel graphene oxide wrapped Na2Fe2(SO4)3/C cathode composite for long life and high energy density sodium‐ion batteriesen_AU
dc.typeJournal Articleen_AU
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