Abstract
The effect of the precursor concentration on the electrochemical properties of hydrothermally synthesized Li2MnSiO4 is investigated. The synthesis mechanism is investigated by analyzing the chemical reaction as a function of reaction time. Results show that Li2MnSiO4 is synthesized by a dissolution-recrystallization mechanism through an intermediate Mn(OH)2 phase. Smaller particles produced from higher concentration precursor solution. Li2MnSiO4 with smaller particle size shows larger initial discharge capacity than that of Li2MnSiO 4 with larger particle size which are synthesized from lower concentration precursor solution. A maximum initial charge capacity of 323 mAh g-1 and discharge capacity of 177 mAh g-1 are achieved through hydrothermal synthesis using a 2.1 M solution, while it shows serious capacity fading. Li2MnSiO4 synthesized from 2.1 M solution shows 32% of capacity retention after 20 cycles. Smaller particle size of Li2MnSiO4 can induce more serious side reaction with electrolyte due to its larger specific surface area, which results in structural instability during charge-discharge tests.
| Original language | English |
|---|---|
| Pages (from-to) | 855-860 |
| Number of pages | 6 |
| Journal | Metals and Materials International |
| Volume | 19 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2013 Jul 1 |
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Keywords
- coating
- crystal growth
- electrochemistry
- energy storage materials
- X-ray diffraction
ASJC Scopus subject areas
- Condensed Matter Physics
- Metals and Alloys
- Mechanics of Materials
- Materials Chemistry
Cite this
Hydrothermal synthesis of Li2MnSiO4 : Mechanism and influence of precursor concentration on electrochemical properties. / Hwang, Jintae; Park, Sungbin; Park, Changkyoo; Cho, Wonil; Jang, Ho.
In: Metals and Materials International, Vol. 19, No. 4, 01.07.2013, p. 855-860.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hydrothermal synthesis of Li2MnSiO4
T2 - Mechanism and influence of precursor concentration on electrochemical properties
AU - Hwang, Jintae
AU - Park, Sungbin
AU - Park, Changkyoo
AU - Cho, Wonil
AU - Jang, Ho
PY - 2013/7/1
Y1 - 2013/7/1
N2 - The effect of the precursor concentration on the electrochemical properties of hydrothermally synthesized Li2MnSiO4 is investigated. The synthesis mechanism is investigated by analyzing the chemical reaction as a function of reaction time. Results show that Li2MnSiO4 is synthesized by a dissolution-recrystallization mechanism through an intermediate Mn(OH)2 phase. Smaller particles produced from higher concentration precursor solution. Li2MnSiO4 with smaller particle size shows larger initial discharge capacity than that of Li2MnSiO 4 with larger particle size which are synthesized from lower concentration precursor solution. A maximum initial charge capacity of 323 mAh g-1 and discharge capacity of 177 mAh g-1 are achieved through hydrothermal synthesis using a 2.1 M solution, while it shows serious capacity fading. Li2MnSiO4 synthesized from 2.1 M solution shows 32% of capacity retention after 20 cycles. Smaller particle size of Li2MnSiO4 can induce more serious side reaction with electrolyte due to its larger specific surface area, which results in structural instability during charge-discharge tests.
AB - The effect of the precursor concentration on the electrochemical properties of hydrothermally synthesized Li2MnSiO4 is investigated. The synthesis mechanism is investigated by analyzing the chemical reaction as a function of reaction time. Results show that Li2MnSiO4 is synthesized by a dissolution-recrystallization mechanism through an intermediate Mn(OH)2 phase. Smaller particles produced from higher concentration precursor solution. Li2MnSiO4 with smaller particle size shows larger initial discharge capacity than that of Li2MnSiO 4 with larger particle size which are synthesized from lower concentration precursor solution. A maximum initial charge capacity of 323 mAh g-1 and discharge capacity of 177 mAh g-1 are achieved through hydrothermal synthesis using a 2.1 M solution, while it shows serious capacity fading. Li2MnSiO4 synthesized from 2.1 M solution shows 32% of capacity retention after 20 cycles. Smaller particle size of Li2MnSiO4 can induce more serious side reaction with electrolyte due to its larger specific surface area, which results in structural instability during charge-discharge tests.
KW - coating
KW - crystal growth
KW - electrochemistry
KW - energy storage materials
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=84879976139&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879976139&partnerID=8YFLogxK
U2 - 10.1007/s12540-013-4029-z
DO - 10.1007/s12540-013-4029-z
M3 - Article
AN - SCOPUS:84879976139
VL - 19
SP - 855
EP - 860
JO - Metals and Materials International
JF - Metals and Materials International
SN - 1598-9623
IS - 4
ER -