Lithium Polyacrylate (LiPAA) as an Advanced Binder and a Passivating Agent for High-Voltage Li-Ion Batteries

被引：238

作者：

Pieczonka, Nicholas P. W. ^{[1
]}

Borgel, Valentina ^{[2
]}

Ziv, Baruch ^{[2
]}

Leifer, Nicole ^{[2
]}

Dargel, Vadim ^{[2
]}

Aurbach, Doron ^{[2
]}

Kim, Jung-Hyun ^{[3
]}

Liu, Zhongyi ^{[3
]}

Huang, Xiaosong ^{[3
]}

Krachkovskiy, Sergey A. ^{[4
]}

Goward, Gillian R. ^{[4
]}

Halalay, Ion ^{[3
]}

Powell, Bob R. ^{[3
]}

Manthiram, Arumugam ^{[5
]}

机构：

[1] Optimal CAE Inc, Plymouth, MI 48170 USA

[2] Bar Ilan Univ, Dept Chem, IL-5290002 Ramat Gan, Israel

[3] GM Corp, Global Res & Dev Ctr, Chem & Mat Syst Lab, Warren, MI 48090 USA

[4] McMaster Univ, Dept Chem, Hamilton, ON L8S 4L8, Canada

[5] Univ Texas Austin, Mat Sci & Engn Program, Austin, TX 78712 USA

来源：

ADVANCED ENERGY MATERIALS | 2015年 / 5卷 / 23期

基金：

以色列科学基金会;

关键词：

LINI0.5MN1.5O4; ELECTRODE; ELECTROCHEMICAL PROPERTIES; ELEVATED-TEMPERATURE; CATHODE MATERIAL; SPINEL CATHODES; CARBON; CELLS; SURFACE; COATINGS; DISSOLUTION;

D O I：

10.1002/aenm.201501008

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：

Intensive studies of an advanced energy material are reported and lithium polyacrylate (LiPAA) is proven to be a surprisingly unique, multifunctional binder for high-voltage Li-ion batteries. The absence of effective passivation at the interface of high-voltage cathodes in Li-ion batteries may negatively affect their electrochemical performance, due to detrimental phenomena such as electrolyte solution oxidation and dissolution of transition metal cations. A strategy is introduced to build a stable cathode-electrolyte solution interphase for LiNi0.5Mn1.5O4 (LNMO) spinel high-voltage cathodes during the electrode fabrication process by simply using LiPAA as the cathode binder. LiPAA is a superb binder due to unique adhesion, cohesion, and wetting properties. It forms a uniform thin passivating film on LNMO and conducting carbon particles in composite cathodes and also compensates Li-ion loss in full Li-ion batteries by acting as an extra Li source. It is shown that these positive roles of LiPAA lead to a significant improvement in the electrochemical performance (e.g., cycle life, cell impedance, and rate capability) of LNMO/graphite battery prototypes, compared with that obtained using traditional polyvinylidene fluoride (PVdF) binder for LNMO cathodes. In addition, replacing PVdF with LiPAA binder for LNMO cathodes offers better adhesion, lower cost, and clear environmental advantages.

引用

页数：10

共 44 条

[1] Heterogeneous Coordination Environments in Lithium-Neutralized Ionomers Identified Using 1H and 7Li MAS NMR [J].