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Study on enhancing electrochemical properties of Li in layered compound Na0.7Li0.3Mn0.75O2
Yu, H; Liu, GQ; Li, GC; Zhang, JY; Chen, G; Wen, L; Liu, GQ (reprint author), Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China.; Wen, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
2018-02-10
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume263Pages:474-479
AbstractThe enhancing sodium ion insertion and deinsertion characteristics of Li in layered structure compound were studied. Layered structure materials Na2/3Ni1/3Mn2/3O2 and Na0.7Li0.3Mn0.75O2 were synthesized. They can be used as cathode materials for sodium ion batteries. Although they displayed same crystal structures, the Na0.7Li0.3Mn0.75O2 exhibited better electrochemical properties than Na2/3Ni1/3Mn2/3O2. For Na0.7Li0.3Mn0.75O2, when cycled between 2.0 and 4.4 V at a current rate of 17 mA g(-1), its charge capacity of reached 175 mAh g(-1), and its discharge capacity was 149 mAh g(-1). In the first several charge-discharge cycles, the capacity decreased with cycles performing. Then capacity tended to be stable and began to increase. After 40 cycles, its discharge capacity was 143 mAh g(-1). It discharge capacity could reach 121 mAh g(-1) at current rates of 0.34 mA g(-1)-charge/0.85 mA g(-1)-discharge. Li element enhanced the electrochemical properties such as cycle performance and rate capability. (c) 2018 Elsevier Ltd. All rights reserved.; The enhancing sodium ion insertion and deinsertion characteristics of Li in layered structure compound were studied. Layered structure materials Na2/3Ni1/3Mn2/3O2 and Na0.7Li0.3Mn0.75O2 were synthesized. They can be used as cathode materials for sodium ion batteries. Although they displayed same crystal structures, the Na0.7Li0.3Mn0.75O2 exhibited better electrochemical properties than Na2/3Ni1/3Mn2/3O2. For Na0.7Li0.3Mn0.75O2, when cycled between 2.0 and 4.4 V at a current rate of 17 mA g(-1), its charge capacity of reached 175 mAh g(-1), and its discharge capacity was 149 mAh g(-1). In the first several charge-discharge cycles, the capacity decreased with cycles performing. Then capacity tended to be stable and began to increase. After 40 cycles, its discharge capacity was 143 mAh g(-1). It discharge capacity could reach 121 mAh g(-1) at current rates of 0.34 mA g(-1)-charge/0.85 mA g(-1)-discharge. Li element enhanced the electrochemical properties such as cycle performance and rate capability. (c) 2018 Elsevier Ltd. All rights reserved.
description.department[yu, han ; liu, guoqiang ; li, guocheng ; zhang, jingyi ; chen, gang] northeastern univ, sch met, shenyang 110819, liaoning, peoples r china ; [wen, lei] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china
KeywordSodium-ion Batteries Cathode Material Substitution Oxygen Oxide
Subject AreaElectrochemistry
Funding OrganizationNational Natural Science Foundation of China [51574081]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79509
Collection中国科学院金属研究所
Corresponding AuthorLiu, GQ (reprint author), Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China.; Wen, L (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Yu, H,Liu, GQ,Li, GC,et al. Study on enhancing electrochemical properties of Li in layered compound Na0.7Li0.3Mn0.75O2[J]. ELECTROCHIMICA ACTA,2018,263:474-479.
APA Yu, H.,Liu, GQ.,Li, GC.,Zhang, JY.,Chen, G.,...&Wen, L .(2018).Study on enhancing electrochemical properties of Li in layered compound Na0.7Li0.3Mn0.75O2.ELECTROCHIMICA ACTA,263,474-479.
MLA Yu, H,et al."Study on enhancing electrochemical properties of Li in layered compound Na0.7Li0.3Mn0.75O2".ELECTROCHIMICA ACTA 263(2018):474-479.
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