FeSe2 Graphite Intercalation Compound as Anode Materials for Sodium Ion Batteries

被引：5

作者：

Wang, Haodong ^{[1
,2
,3
,4
]}

Zhang, Kai ^{[2
,3
,4
]}

Zheng, Jun ^{[2
,3
,4
]}

Wang, Gang ^{[2
,3
,4
]}

Fu, Wenwu ^{[2
,3
,4
]}

Hao, Yaowei ^{[1
,2
,3
,4
]}

Zhao, Yafang ^{[1
,2
,3
,4
]}

Cao, Xiaocao ^{[2
,3
,4
]}

Lin, Zhiguang ^{[2
,3
,4
]}

Liu, Jiayi ^{[2
,3
,4
]}

Zhang, Ming ^{[2
,3
,4
]}

Shen, Zhongrong ^{[2
,3
,4
]}

机构：

[1] Fujian Normal Univ, Coll Chem & Meterials Sci, Fuzhou 350007, Peoples R China

[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Peoples R China

[3] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian Key Lab Nanomat, Fuzhou 350002, Peoples R China

[4] Chinese Acad Sci, Xiamen Inst Rare Earth Mat, Haixi Inst, Xiamen Key Lab Rare Earth Photoelect Funct Mat, Xiamen 361021, Peoples R China

来源：

ACS APPLIED ELECTRONIC MATERIALS | 2023年 / 5卷 / 12期

基金：

芬兰科学院;

关键词：

hydrothermal synthesis; ball milling; graphiteintercalation compound; intercalated structure; FeSe2; HIGH-PERFORMANCE ANODE; POROUS CARBON; LITHIUM; GRAPHENE; ARCHITECTURES; COMPOSITES; CAPACITY; SELENIUM; STORAGE; HYBRID;

D O I：

10.1021/acsaelm.3c01355

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Based on theoretical calculations, the molecule predominantly generated by the combination of sodium with graphite is identified as NaC186. Consequently, this compound has a relatively limited capacity for sodium storage, amounting to only 36 mA h g(-1). In this study, we construct FeSe2 graphite intercalation compounds (FeSe2-GIC) by in situ inserting FeSe2 between the graphite interlayers by a hydrothermal process. The resulting FeSe2-GIC material is then subjected to ball milling to form the FeSe2-GIC-BM. The FeSe2 material was found to be tightly intercalated within the graphite layers, resulting in a limited volume expansion and improved electrical conductivity. The electrochemical test results indicate that the FeSe2-GIC-BM anode exhibits a remarkable electrochemical performance. It exhibits an initial specific discharge capacity of 676.2 mA h g(-1) at a current density of 0.1 A g(-1) and a specific discharge capacity of 425.0 mA h g(-1) at a current density of 5 A g(-1). After 1200 cycles, the observed reversible capacity remains at 182.9 mA h g(-1). The exceptional storage and cycling characteristics can be attributed to the distinctive layered structure.

引用

页码：6964 / 6973

页数：10