Easy recovery of Li-ion cathode powders by the use of water-processable binders

Brilloni, Alessandro; Poli, Federico; Spina, Giovanni Emanuele; Samorì, Chiara; Guidi, Elena; Gualandi, Chiara; Maisuradze, Mariam; Giorgetti, Marco; Soavi, Francesca

doi:10.1016/j.electacta.2022.140376

Cited by 16 publications

(17 citation statements)

References 37 publications

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“…In our previous studies, 27 , 28 we demonstrated that the lithiation/delithitation processes are highly reversible for both NMC532 and LNMO-bulk electrodes. These electrodes can be charged/discharged over hundreds of cycles without significant structural, morphological, or compositional changes, when operated in LP30 electrolyte.…”

Section: Resultsmentioning

confidence: 75%

“…00-85-1968). 27 No additional reflections attributable to contaminants are observed. SEM images ( Figure S2 ) show that NMC532, carbon particles and binder are homogenously distributed on the substrate.…”

Section: Resultsmentioning

confidence: 97%

“…These redox peaks correspond to the Ni 4+ /Ni 3+ and Co 4+ /Co 3+ redox couples. 27 , 29 The CV of the LNMO ( Figure 1 B) features anodic peaks at ca. 4 V, 4.7 V, and 4.8 V versus Li + /Li.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the electrodes were transferred and stored in a dry Ar box (MBraun, H 2 O, and O 2 <1 ppm). 27 , 28 …”

Section: Methodsmentioning

confidence: 99%

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Electronic properties of lithium-ion battery cathodes studied in ion-gated transistor configuration

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Section: Resultsmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

“…Finally, the electrodes were transferred and stored in a dry Ar box (MBraun, H 2 O, and O 2 <1 ppm). 27 , 28 …”

Section: Methodsmentioning

confidence: 99%

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Electronic properties of lithium-ion battery cathodes studied in ion-gated transistor configuration

et al. 2023

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“…Furthermore, components of vegetable origin were tested as a binder [31–37] for both LIBs and SIBs. The use of pullulan as a binder was first demonstrated in a supercapacitor with carbon electrodes obtained from pepper‐seeds waste [31,32] and then in a lithium metal battery using a LNMO‐based cathode [33] .…”

Section: Outcomes Of the Projectmentioning

confidence: 99%

The ENEA′s 2019–2021 Three‐Year Research Project on Electrochemical Energy Storage

et al. 2023

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This work describes the research activities carried out by ENEA in the three-year period 2019-2021 as a part of the Electrochemical Storage project. The project was part of a larger and more integrated project for energy storage, itself contained in the Electric System Research program. Within the project, various research lines were carried out: From the development of materials for electrodes to the testing of electrolytes and separators, both for lithium and sodium-ion batteries, evaluation of the use of lithium metal batteries, and studying how to give a second life to used batteries. Dissemination of the results was an integral part of the program. The reasons that have been adduced to articulate the research plan and the main results obtained are reviewed in this concept.

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Fluorine‐Free Poly(ionic Liquid)s Binders for the Aqueous Processing of High‐Voltage NMC811 Cathodes

Rolandi,

Pozo-Gonzalo,

de Meatza

et al. 2023

Adv Energy and Sustain Res

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The use of water‐soluble binders enables the transition to more sustainable batteries by the replacement of toxic N‐methyl‐2‐pyrrolidone (NMP) by water. Herein, two new fluorine‐free poly(ionic liquid)s are proposed as binders for LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes, based on poly(diallyldimethylammonium) (PDADMA) and two‐phosphate counter anions, which are recognized as effective corrosion inhibitors and electrolyte additives. Due to their high ionic conductivity (10−6 S cm−1 at 25 °C) and ability to prevent degradation of NMC811 particles, the PDADMA phosphate cells are able to achieve a 91% of capacity retention after 90 cycles at 0.5C, similar to the organic fluorinated polyvinylidene fluoride (PVDF) (96%) under the same conditions. However, aqueous sodium carboxymethyl cellulose (Na‐CMC) only provides 81% of capacity retention. Among the PDADMA‐based binders under study, PDADMA‐ diethyl phosphate (PDADMA‐DEP) delivers the highest discharge capacity (101.1 mAh g−1) at high C‐rate (5C). Degradation of Na‐CMC electrodes is observed in postmortem analysis and a notable increase in the charge transfer‐resistance. However, the NMC811 particles preserve their spherical shape when PDADMA‐phosphates are used as binders, also leading to lower polarization resistances and improved lithium diffusion. In conclusion, PDADMA‐phosphates manifest high performance as binders for sustainable NMC811 cathodes, while disposing of fluoropolymers and toxic solvents.

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Easy recovery of Li-ion cathode powders by the use of water-processable binders

Cited by 16 publications

References 37 publications

Electronic properties of lithium-ion battery cathodes studied in ion-gated transistor configuration

Electronic properties of lithium-ion battery cathodes studied in ion-gated transistor configuration

The ENEA′s 2019–2021 Three‐Year Research Project on Electrochemical Energy Storage

Fluorine‐Free Poly(ionic Liquid)s Binders for the Aqueous Processing of High‐Voltage NMC811 Cathodes

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