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LiPF6 and lithium difluoro(oxalato)borate/ethylene carbonate+dimethyl carbonate+ethyl(methyl)carbonate electrolyte for LiNi0.5Mn1.5O4 cathode
被引量：
2
1
作者
ZHOU Hong-ming
geng wen-jun
LI Jian
《Journal of Central South University》
SCIE
EI
CAS
CSCD
2017年第5期1013-1018,共6页
LiODFB electrolyte’s compatibility with LiNi0.5Mn1.5O4high-voltage cathode material was studied by cyclic voltammetry, charge-discharge test and AC impedance. The results show that at 25 and 60 °C, the LiODFB-ba...
LiODFB electrolyte’s compatibility with LiNi0.5Mn1.5O4high-voltage cathode material was studied by cyclic voltammetry, charge-discharge test and AC impedance. The results show that at 25 and 60 °C, the LiODFB-based electrolyte has better electrochemical stability than LiPF6. AC impedance plots show that the LiODFB battery has a lower charge-transfer resistance than LiPF6battery at 60 °C, which indicates that LiODFB battery has excellent cycling performance at high temperature. At 25 and 60 °C, the LiNi0.5Mn1.5O4/Li half cells with LiODFB or LiPF6as electrolyte all have simple redox peak, showing that each of them has an excellent reversibility. LiODFB battery has better cycle performance than LiPF6battery at 25 °C and 60 °C. At 25 °C, their 0.5C initial discharge specific capacities are 126.3 and 131.6 mA·h/g, and their capacity retention ratios of the 100th cycle are 97.1% and 94.7%, respectively. At 60 °C, their 0.5C initial discharge specific capacities are 132.6 and 129.1 mA·h/g, and their capacity retention ratios of the 100th cycle are 94.1% and 81.7%, respectively. © 2017, Central South University Press and Springer-Verlag GmbH Germany.
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关键词
CARBONATION
Cathodes
Charge
transfer
Cyclic
voltammetry
Electric
batteries
Electric
discharges
Electric
impedance
Electrodes
Electrolytes
Lithium
compounds
Manganese
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题名
LiPF6 and lithium difluoro(oxalato)borate/ethylene carbonate+dimethyl carbonate+ethyl(methyl)carbonate electrolyte for LiNi0.5Mn1.5O4 cathode
被引量：
2
1
作者
ZHOU Hong-ming
geng wen-jun
LI Jian
机构
School of Materials Science and Engineering
Hunan Province Zhengyuan Energy Storage Materials and Devices Research
出处
《Journal of Central South University》
SCIE
EI
CAS
CSCD
2017年第5期1013-1018,共6页
基金
Project(K1403375-11)supported by Science and Technology Planning Project of Changsha,China
文摘
LiODFB electrolyte’s compatibility with LiNi0.5Mn1.5O4high-voltage cathode material was studied by cyclic voltammetry, charge-discharge test and AC impedance. The results show that at 25 and 60 °C, the LiODFB-based electrolyte has better electrochemical stability than LiPF6. AC impedance plots show that the LiODFB battery has a lower charge-transfer resistance than LiPF6battery at 60 °C, which indicates that LiODFB battery has excellent cycling performance at high temperature. At 25 and 60 °C, the LiNi0.5Mn1.5O4/Li half cells with LiODFB or LiPF6as electrolyte all have simple redox peak, showing that each of them has an excellent reversibility. LiODFB battery has better cycle performance than LiPF6battery at 25 °C and 60 °C. At 25 °C, their 0.5C initial discharge specific capacities are 126.3 and 131.6 mA·h/g, and their capacity retention ratios of the 100th cycle are 97.1% and 94.7%, respectively. At 60 °C, their 0.5C initial discharge specific capacities are 132.6 and 129.1 mA·h/g, and their capacity retention ratios of the 100th cycle are 94.1% and 81.7%, respectively. © 2017, Central South University Press and Springer-Verlag GmbH Germany.
关键词
CARBONATION
Cathodes
Charge
transfer
Cyclic
voltammetry
Electric
batteries
Electric
discharges
Electric
impedance
Electrodes
Electrolytes
Lithium
compounds
Manganese
Keywords
lithium
difluoro(oxalato)borate
LiNi0.5Mn1.5O4
electrochemical
performance
compatibility
分类号
TM912 [电气工程—电力电子与电力传动]
TQ131.11 [化学工程—无机化工]
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LiPF6 and lithium difluoro(oxalato)borate/ethylene carbonate+dimethyl carbonate+ethyl(methyl)carbonate electrolyte for LiNi0.5Mn1.5O4 cathode
ZHOU Hong-ming
geng wen-jun
LI Jian
《Journal of Central South University》
SCIE
EI
CAS
CSCD
2017
2
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