Effect of PEDOT:PSS (Poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate) Coating on Nanostructured Cobalt-Free LiNi0.9Mn0.1O2 Layered Oxide Cathode Materials for Lithium-Ion Battery

Bae, Jin-Ju; Shin, Ji-Woong; Lee, Seon-Jin; Kim, Seong-Jae; Hong, Tae-Whan; Son, Jong‐Tae

doi:10.1166/jnn.2020.17296

Cited by 3 publications

(2 citation statements)

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“…The good cycling stability of LMNO-PE could be related to the ability of PEDOT:PSS to be a "barrier" against undesired side reactions of LMNO with the electrolyte. On the other hand, this effect has already been observed for cathodes produced with PVdF binder and PEDOT:PSS-coated LMNO particles [19][20][21][22][23]. Hence, this work demonstrates that it is possible to produce LMNO cathodes with aqueous binders maintaining the same performance of PVdF, in the case of pullulan, and improving them by the direct use of an electronically conductive binder such as PEDOT:PSS, without the need of LMNO particle coating.…”

Section: Discussionsupporting

confidence: 56%

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Performance Comparison of LMNO Cathodes Produced with Pullulan or PEDOT:PSS Water-Processable Binders

et al. 2022

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The aim of this paper is to demonstrate lithium metal battery cells assembled with high potential cathodes produced by sustainable processes. Specifically, LiNi0.5Mn1.5O4 (LMNO) electrodes were fabricated using two different water-processable binders: pullulan (PU) or the bifunctional electronically conductive poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS). The cell performance was evaluated by voltammetric and galvanostatic charge/discharge cycles at different C-rates with 1M LiPF6 in 1:1 (v:v) ethylene carbonate (EC):dimethyl carbonate (DMC) (LP30) electrolyte and compared to that of cells assembled with LMNO featuring poly(vinylidene difluoride) (PVdF). At C/10, the specific capacity of LMNO-PEDOT:PSS and LMNO-PU were, respectively, 130 mAh g−1 and 127 mAh g−1, slightly higher than that of LMNO-PVdF (124 mAh g−1). While the capacity retention at higher C-rates and under repeated cycling of LMNO-PU and LMNO-PVdF electrodes was similar, LMNO-PEDOT:PSS featured superior performance. Indeed, lithium metal cells assembled with PEDOT:PSS featured a capacity retention of 100% over 200 cycles carried out at C/1 and with a high cut-off voltage of 5 V. Overall, this work demonstrates that both the water-processable binders are a valuable alternative to PVdF. In addition, the use of PEDOT:PSS significantly improves the cycle life of the cell, even when high-voltage cathodes are used, therefore demonstrating the feasibility of the production of a green lithium metal battery that can exhibit a specific energy of 400 Wh kg−1, evaluated at the electrode material level. Our work further demonstrates the importance of the use of functional binders in electrode manufacturing.

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Section: Discussionsupporting

confidence: 56%

“…Electrospun of LMNO nanoparticles coated with 1%wt of PEDOT:PSS exhibited improved cycle stability as side reactions with the electrolyte were alleviated. By this approach, up to 128 mAh g −1 were achieved, but cycling stability was demonstrated only over 30 cycles [23].…”

Section: Introductionmentioning

confidence: 99%

Performance Comparison of LMNO Cathodes Produced with Pullulan or PEDOT:PSS Water-Processable Binders

et al. 2022

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Cobalt‐Free Cathode Materials: Families and their Prospects

Zhao

Lam

Sheng

et al. 2022

Advanced Energy Materials

109

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With the rapid growth of global electro‐mobility, the demand for cobalt is rapidly increasing because it is currently an indispensable component of the cathode materials in lithium‐ion batteries (LIBs). However, the use of Co raises moral issues caused by its exploitation and the geographic limitations of Co resources may result in risking the supply of LIBs. Thus, the development of cobalt‐free (Co‐free) cathodes has become a focus in the LIBs industry. Currently, Co‐free cathodes of lithium‐rich oxides, nickel‐rich layered oxides and spinel lithium nickel manganese oxide (LNMO) are promising candidates but face severe problems. This review article is the first to synthesize and present the progress of Co‐free cathodes made with Li‐rich oxides, Ni‐rich layered oxides and spinel LNMO, identifying their performance, problems and potential development trends. In particular, the roles of cobalt are further clarified, and the full‐cell performance and related commercialization prospects of the three above‐mentioned Co‐free cathodes are also objectively assessed. The focus of this work is to distill detailed and timely insights from the corresponding research progress on these materials and to demonstrate the associated urgency, challenges and opportunities in this field, thus facilitating a faster industrialization of Co‐free cathodes.

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Synergistic effects of Zr doping and Li2ZrO3/WO3 co-coating on the physicochemical and electrochemical properties of cobalt-free LiNi0.8Mn0.2O2

Zhang

Xiao

Zheng

et al. 2023

Applied Surface Science

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Effect of PEDOT:PSS (Poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate) Coating on Nanostructured Cobalt-Free LiNi_0.9Mn_0.1O₂ Layered Oxide Cathode Materials for Lithium-Ion Battery

Cited by 3 publications

References 0 publications

Performance Comparison of LMNO Cathodes Produced with Pullulan or PEDOT:PSS Water-Processable Binders

Performance Comparison of LMNO Cathodes Produced with Pullulan or PEDOT:PSS Water-Processable Binders

Cobalt‐Free Cathode Materials: Families and their Prospects

Synergistic effects of Zr doping and Li2ZrO3/WO3 co-coating on the physicochemical and electrochemical properties of cobalt-free LiNi0.8Mn0.2O2

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