Electrochemical studies of ternary and quadruple lithium metal nitrides synthesized by ballmilling

Ke Wang; Jun Yang; Jingying Xie; Shichao Zhang

doi:10.1016/S0167-2738(03)00146-2

Electrochemical studies of ternary and quadruple lithium metal nitrides synthesized by ballmilling

Ke Wang, Jun Yang, Jingying Xie, Shichao Zhang

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Quadruple Li_2.6Co_0.2Cu_0.2N and Li_2.6Ni_0.2Cu_0.2N compounds with a hexagonal structure like Li₃N were synthesized by high-energy ballmilling under N₂ atmosphere. The Li_2.6Co_0.2Cu_0.2N sample obtained by using CoCu alloy and Li₃N as precursors exhibits high electrochemical activity and reversibility. Its initial specific capacity is 609 mA h/g and 91% of the initial capacity can be retained at the 45th cycle. This result shows that the Li_2.6Co_0.2Cu_0.2N has better cycling stability than ternary Li_2.6Co_0.4N and Li_2.6Cu_0.4N. On the other hand, the Li_2.6Ni_0.2Cu_0.2N has poor electrochemical reversibility. Only about 66% of initially extracted lithium can be inserted for cycling.

Original language	English
Pages (from-to)	69-73
Number of pages	5
Journal	Solid State Ionics
Volume	160
Issue number	1-2
DOIs	https://doi.org/10.1016/S0167-2738(03)00146-2
State	Published - May 2003
Externally published	Yes

Keywords

Anode materials
Ballmilling synthesis
Lithium metal nitride
Lithium secondary batteries

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10.1016/S0167-2738(03)00146-2

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title = "Electrochemical studies of ternary and quadruple lithium metal nitrides synthesized by ballmilling",

abstract = "Quadruple Li2.6Co0.2Cu0.2N and Li2.6Ni0.2Cu0.2N compounds with a hexagonal structure like Li3N were synthesized by high-energy ballmilling under N2 atmosphere. The Li2.6Co0.2Cu0.2N sample obtained by using CoCu alloy and Li3N as precursors exhibits high electrochemical activity and reversibility. Its initial specific capacity is 609 mA h/g and 91% of the initial capacity can be retained at the 45th cycle. This result shows that the Li2.6Co0.2Cu0.2N has better cycling stability than ternary Li2.6Co0.4N and Li2.6Cu0.4N. On the other hand, the Li2.6Ni0.2Cu0.2N has poor electrochemical reversibility. Only about 66% of initially extracted lithium can be inserted for cycling.",

keywords = "Anode materials, Ballmilling synthesis, Lithium metal nitride, Lithium secondary batteries",

author = "Ke Wang and Jun Yang and Jingying Xie and Shichao Zhang",

year = "2003",

month = may,

doi = "10.1016/S0167-2738(03)00146-2",

language = "英语",

volume = "160",

pages = "69--73",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Electrochemical studies of ternary and quadruple lithium metal nitrides synthesized by ballmilling

AU - Wang, Ke

AU - Yang, Jun

AU - Xie, Jingying

AU - Zhang, Shichao

PY - 2003/5

Y1 - 2003/5

N2 - Quadruple Li2.6Co0.2Cu0.2N and Li2.6Ni0.2Cu0.2N compounds with a hexagonal structure like Li3N were synthesized by high-energy ballmilling under N2 atmosphere. The Li2.6Co0.2Cu0.2N sample obtained by using CoCu alloy and Li3N as precursors exhibits high electrochemical activity and reversibility. Its initial specific capacity is 609 mA h/g and 91% of the initial capacity can be retained at the 45th cycle. This result shows that the Li2.6Co0.2Cu0.2N has better cycling stability than ternary Li2.6Co0.4N and Li2.6Cu0.4N. On the other hand, the Li2.6Ni0.2Cu0.2N has poor electrochemical reversibility. Only about 66% of initially extracted lithium can be inserted for cycling.

AB - Quadruple Li2.6Co0.2Cu0.2N and Li2.6Ni0.2Cu0.2N compounds with a hexagonal structure like Li3N were synthesized by high-energy ballmilling under N2 atmosphere. The Li2.6Co0.2Cu0.2N sample obtained by using CoCu alloy and Li3N as precursors exhibits high electrochemical activity and reversibility. Its initial specific capacity is 609 mA h/g and 91% of the initial capacity can be retained at the 45th cycle. This result shows that the Li2.6Co0.2Cu0.2N has better cycling stability than ternary Li2.6Co0.4N and Li2.6Cu0.4N. On the other hand, the Li2.6Ni0.2Cu0.2N has poor electrochemical reversibility. Only about 66% of initially extracted lithium can be inserted for cycling.

KW - Anode materials

KW - Ballmilling synthesis

KW - Lithium metal nitride

KW - Lithium secondary batteries

UR - http://www.scopus.com/inward/record.url?scp=0038040675&partnerID=8YFLogxK

U2 - 10.1016/S0167-2738(03)00146-2

DO - 10.1016/S0167-2738(03)00146-2

M3 - 文章

AN - SCOPUS:0038040675

SN - 0167-2738

VL - 160

SP - 69

EP - 73

JO - Solid State Ionics

JF - Solid State Ionics

IS - 1-2

ER -

Electrochemical studies of ternary and quadruple lithium metal nitrides synthesized by ballmilling

Abstract

Keywords

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