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Tuned In Situ Growth of Nanolayered rGO on 3D Na 3 V 2 (PO 4 ) 3 Matrices: A Step toward Long Lasting, High Power Na‐Ion Batteries
Author(s) -
Rajagopalan Ranjusha,
Zhang Lei,
Dou Shi Xue,
Liu Hua Kun
Publication year - 2016
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201600007
Subject(s) - materials science , graphene , electrode , oxide , battery (electricity) , in situ , chemical engineering , hysteresis , voltage , ion , work (physics) , nanotechnology , analytical chemistry (journal) , power (physics) , thermodynamics , metallurgy , electrical engineering , condensed matter physics , chromatography , chemistry , physics , engineering , organic chemistry
Even though significant improvements have been made in sodium ion batteries, battery management mandates that all batteries in a pack are kept at an acceptable level of more than 80% capacity retention after a long cycle when it is tested for emergencies. Based on these realistic facts, the present study profitably exploits in situ grown reduced graphene oxide on 3D Na 3 V 2 (PO 4 ) 3 matrices exhibiting a high rate performance and a specific discharge capacity of 117 mAh g −1 . Unlike the earlier literature reports, it is demonstrated that the fabricated electrode shows >85% capacity retention after 6000 cycles at 10 C, the longest cycle life reported till date. The work also reasons in‐depth the outstanding sodiation/desodiation capabilities to the low hysteresis voltage and how these electrodes can be used for deep discharges by extending the potential window to 1.3–3.8 V (vs Na/Na + ) resulting in a noteworthy specific capacity of ≈165.4 mAh g −1 at 1 C.