Sidorenkite (Na3MnPO4CO3): A New Intercalation Cathode Material for Na-Ion Batteries

被引：158

作者：

Chen, Hailong ^{[1
]}

Hao, Qing ^{[1
]}

Zivkovic, Olivera ^{[2
]}

Hautier, Geoffroy ^{[1
]}

Du, Lin-Shu ^{[2
]}

Tang, Yuanzhi ^{[3
]}

Hu, Yan-Yan ^{[2
,4
]}

Ma, Xiaohua ^{[1
]}

Grey, Clare P. ^{[2
,4
]}

Ceder, Gerbrand ^{[1
]}

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[2] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

[3] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA

[4] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

CHEMISTRY OF MATERIALS | 2013年 / 25卷 / 14期

关键词：

Na-ion batteries; batteries; intercalation; cathode; carbonophosphates; phosphocarbonates; Na-23; NMR; MAS NMR; hydrothermal; NUCLEAR-MAGNETIC-RESONANCE; ELECTROCHEMICAL PROPERTIES; SODIUM-ION; POSITIVE ELECTRODE; MAS NMR; AB-INITIO; LITHIUM; LI; PHASE; MN;

D O I：

10.1021/cm400805q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Na-ion batteries represent an effective energy storage technology with slightly lower energy and power densities but potentially lower material costs than Li-ion batteries. Here, we report a new polyanionic intercalation cathode material of an unusual chemical class: sidorenkite (Na3MnPO4CO3). This carbonophosphate compound shows a high discharge capacity (similar to 125 mAh/g) and specific energy (374 Wh/kg). In situ X-ray diffraction measurement suggests that sidorenkite undergoes a solid solution type reversible topotactic structural evolution upon electrochemical cycling. Ex situ solid state NMR investigation reveals that more than one Na per formula unit can be deintercalated from the structure, indicating a rarely observed two-electron intercalation reaction in which both Mn2+/Mn3+ and Mn3+/Mn4+ redox couples are electrochemically active.

引用

页码：2777 / 2786

页数：10

共 58 条

[1] Sodium insertion in carboxylate based materials and their application in 3.6 V full sodium cells [J].