Sökning: onr:"swepub:oai:research.chalmers.se:5c8012f8-26c9-4f82-91ba-cb861ffd5bd4" >
Hydrothermal-assist...
-
Fan, Jianming
(författare)
Hydrothermal-assisted synthesis of Li-rich layered oxide microspheres with high capacity and superior rate-capability as a cathode for lithium-ion batteries
- Artikel/kapitelEngelska2015
Förlag, utgivningsår, omfång ...
Nummerbeteckningar
-
LIBRIS-ID:oai:research.chalmers.se:5c8012f8-26c9-4f82-91ba-cb861ffd5bd4
-
https://research.chalmers.se/publication/254664URI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:art swepub-publicationtype
-
Ämneskategori:ref swepub-contenttype
Anmärkningar
-
Li-rich layered oxide materials possess high voltage and high specific capacity, which makes them attractive cathode candidates for lithium-ion batteries. However, they still suffer from a poor rate capability, which seriously blocks their widespread practical applications. In this work, Li(Li0.167Mn0.5Co0.167Ni0.167)O2 microspheres were synthesized by a hydrothermal-assisted method, in which Ni-Co-Mn-based microspherical precursors obtained by a hydrothermal process with polyethylene glycol-600 (PEG-600) as a surfactant were mixed with lithium sources and then sintered to yield the final products. It is found that the as-prepared Li-rich layered oxide microspheres exhibit high discharge capacity and superior rate performance: delivering an initial discharge capacity of 292 mAh g−1 at a current density of 20 mA g−1, 189 mAh g−1 at a current density of 600 mA g−1 and 142 mAh g−1 at a current density of 2000 mA g−1 (10C), which are better than that of the sample as-prepared by co-precipitation method. The high discharge capacity and improved rate-capability were beneficial from the microspheres assembled by uniform primary particles around 250 nm, more reversible redox and better electrode kinetics comparing to that of the co-precipitation sample. The preparation strategy reported here may offer hints for achieving various advanced Li-rich layered composite materials that would be used in high-performance energy storage.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Li, Guangshe
(författare)
-
Luo, Dong
(författare)
-
Fu, Chaochao
(författare)
-
Li, Qi,1990Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)qili
(författare)
-
Zheng, Jing
(författare)
-
Li, Liping
(författare)
-
Chalmers tekniska högskola
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Electrochimica Acta173, s. 7-160013-4686
Internetlänk
Hitta via bibliotek
Till lärosätets databas