Abstract
NASICON-type materials with general formula AxM2(PO4)3 (A = Li or Na, M = Ti, V, and Fe) are promising candidates for Li- and Na-ion batteries due to their open three-dimensional framework structure. Here we report the electrochemical properties of hydrogen titanium phosphate sulfate, H0.4Ti2(PO4)2.4(SO4)0.6 (HTPS), a new mixed polyanion material with NASICON structure. Micron-sized HTPS aggregates with crystallite grain size of ca. 23 nm are synthesized using a sol-gel synthesis in an acidic medium. The properties of the as-synthesized HTPS, ball-milled HTPS, and samples prepared as carbon composites using an in-situ glucose decomposition reaction are investigated. A capacity of 148 mAh g−1 corresponding to insertion of 2 Li+ per formula unit is observed in the ball-milled HTPS over the potential window of 1.5–3.4 V vs. Li/Li+. Lithiation at ca. 2.8 and 2.5 V is determined to occur through filling of the M1 and M2 sites, respectively. Powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) are used characterize the HTPS before and after cycling. Evaluation of the HTPS in a Na-ion cell is also performed. A discharge capacity of 93 mAh g−1 with sodiation at ca. 2.9 and 2.2 V vs. Na/Na+ is observed.
| Original language | English |
|---|---|
| Pages (from-to) | 197-206 |
| Number of pages | 10 |
| Journal | Journal of Power Sources |
| Volume | 343 |
| DOIs | |
| Publication status | Published - Mar 1 2017 |
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Keywords
- Cathode
- Lithium battery
- NASICON
- Polyanion
- Sodium battery
- Titanate
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
Cite this
New hydrogen titanium phosphate sulfate electrodes for Li-ion and Na-ion batteries. / Zhao, Ran; Mieritz, Daniel; Seo, Dong Kyun; Chan, Candace.
In: Journal of Power Sources, Vol. 343, 01.03.2017, p. 197-206.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - New hydrogen titanium phosphate sulfate electrodes for Li-ion and Na-ion batteries
AU - Zhao, Ran
AU - Mieritz, Daniel
AU - Seo, Dong Kyun
AU - Chan, Candace
PY - 2017/3/1
Y1 - 2017/3/1
N2 - NASICON-type materials with general formula AxM2(PO4)3 (A = Li or Na, M = Ti, V, and Fe) are promising candidates for Li- and Na-ion batteries due to their open three-dimensional framework structure. Here we report the electrochemical properties of hydrogen titanium phosphate sulfate, H0.4Ti2(PO4)2.4(SO4)0.6 (HTPS), a new mixed polyanion material with NASICON structure. Micron-sized HTPS aggregates with crystallite grain size of ca. 23 nm are synthesized using a sol-gel synthesis in an acidic medium. The properties of the as-synthesized HTPS, ball-milled HTPS, and samples prepared as carbon composites using an in-situ glucose decomposition reaction are investigated. A capacity of 148 mAh g−1 corresponding to insertion of 2 Li+ per formula unit is observed in the ball-milled HTPS over the potential window of 1.5–3.4 V vs. Li/Li+. Lithiation at ca. 2.8 and 2.5 V is determined to occur through filling of the M1 and M2 sites, respectively. Powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) are used characterize the HTPS before and after cycling. Evaluation of the HTPS in a Na-ion cell is also performed. A discharge capacity of 93 mAh g−1 with sodiation at ca. 2.9 and 2.2 V vs. Na/Na+ is observed.
AB - NASICON-type materials with general formula AxM2(PO4)3 (A = Li or Na, M = Ti, V, and Fe) are promising candidates for Li- and Na-ion batteries due to their open three-dimensional framework structure. Here we report the electrochemical properties of hydrogen titanium phosphate sulfate, H0.4Ti2(PO4)2.4(SO4)0.6 (HTPS), a new mixed polyanion material with NASICON structure. Micron-sized HTPS aggregates with crystallite grain size of ca. 23 nm are synthesized using a sol-gel synthesis in an acidic medium. The properties of the as-synthesized HTPS, ball-milled HTPS, and samples prepared as carbon composites using an in-situ glucose decomposition reaction are investigated. A capacity of 148 mAh g−1 corresponding to insertion of 2 Li+ per formula unit is observed in the ball-milled HTPS over the potential window of 1.5–3.4 V vs. Li/Li+. Lithiation at ca. 2.8 and 2.5 V is determined to occur through filling of the M1 and M2 sites, respectively. Powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) are used characterize the HTPS before and after cycling. Evaluation of the HTPS in a Na-ion cell is also performed. A discharge capacity of 93 mAh g−1 with sodiation at ca. 2.9 and 2.2 V vs. Na/Na+ is observed.
KW - Cathode
KW - Lithium battery
KW - NASICON
KW - Polyanion
KW - Sodium battery
KW - Titanate
UR - http://www.scopus.com/inward/record.url?scp=85009895065&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85009895065&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2017.01.057
DO - 10.1016/j.jpowsour.2017.01.057
M3 - Article
AN - SCOPUS:85009895065
VL - 343
SP - 197
EP - 206
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -