Pure cellulose lithium-ion battery separator with tunable pore size and improved working stability by cellulose nanofibrils

Liang, Dong; Chai, Jingchao; Wang, Peng; Zhu, Lingyu; Liu, Chao; Nie, Shuangxi; Li, Bin; Cui, Guanglei

doi:10.1016/j.carbpol.2020.116975

Cited by 83 publications

(37 citation statements)

References 50 publications

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“…The Na + transference numbers of glass fiber, TOCNF-EF and TOCNF-HEF were calculated to be 0.81, 0.90 and 0.88, respectively ( Figure 7 d). The TOCNF-HEF has a higher Na + transference number than glass fiber does due to the presence of polar -COO − groups, which inhibit the transport of ClO 4 − in the electrolyte but are favorable for the passage of Na + [ 24 ], and the repulsive force between CNFs makes it easy to form uniform and stable channels during the film formation process [ 14 ]. Hence, even though glass fiber displayed higher ionic conductivity, better electrochemical performances were obtained by TOCNF-HEF.…”

Section: Resultsmentioning

confidence: 99%

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Rational Design of Cellulose Nanofibrils Separator for Sodium-Ion Batteries

Zhou

Zhang

et al. 2021

Molecules

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Cellulose nanofibrils (CNF) with high thermal stability and excellent electrolyte wettability attracted tremendous attention as a promising separator for the emerging sodium-ion batteries. The pore structure of the separator plays a vital role in electrochemical performance. CNF separators are assembled using the bottom-up approach in this study, and the pore structure is carefully controlled through film-forming techniques. The acid-treated separators prepared from the solvent exchange and freeze-drying demonstrated an optimal pore structure with a high electrolyte uptake rate (978.8%) and Na+ transference number (0.88). Consequently, the obtained separator showed a reversible specific capacity of 320 mAh/g and enhanced cycling performance at high rates compared to the commercial glass fiber separator (290 mAh/g). The results highlight that CNF separators with an optimized pore structure are advisable for sodium-ion batteries.

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Section: Resultsmentioning

confidence: 99%

“…Hence this study will explore the possibility of utilizing CNF separators for SIBs. Referring to the case in LIBs, CNF separators with higher porosity would demonstrate better electrochemistry performance [ 14 ]. Hence, it is hypothesized to obtain high-performance SIBs with porous CNF separator.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Cellulose Nanofibrils Separator for Sodium-Ion Batteries

Zhou

Zhang

et al. 2021

Molecules

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“…This strategy shows exceptional electrolyte wettability and rate capability as shown in Figure 8b [231]. Other works in this field include composites based on bacterial cellulose nanocrystals (BCNCs) with polyether block amide (PEBAX) [232], zeolitic imidazolate framework-67 (ZIF-67) on the surface of cellulose nanofibers (CNFs) [233], poly(vinylidene fluoridehexafluoropropylene)/cellulose/carboxylic titanium dioxide (PVDF-HFP/cellulose/C-TiO2) composites [234], aramid nanofiber (ANF)/bacterial cellulose (BC) [200], cellulose nanofibrils (CNFs) reinforced pure cellulose paper (CCP) [235], and Lyocell fibrillated fibers [236], all showing exceptional electrochemical performance and rate capability (Figure 8c for ANF/BC separator). A novel PVDF/triphenyl phosphate (TPP)/cellulose acetate (CA) separator membrane was fabricated by electrospinning, and this membrane shows high porosity, improved thermal stability, superior electrolyte wettability, improved flame resistance, excellent electrochemical properties, and cycle stability when compared to the commercial separators (Figure 8d) [237].…”

Section: Separator Membranementioning

confidence: 99%

Recent Advances on Materials for Lithium-Ion Batteries

et al. 2021

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Environmental issues related to energy consumption are mainly associated with the strong dependence on fossil fuels. To solve these issues, renewable energy sources systems have been developed as well as advanced energy storage systems. Batteries are the main storage system related to mobility, and they are applied in devices such as laptops, cell phones, and electric vehicles. Lithium-ion batteries (LIBs) are the most used battery system based on their high specific capacity, long cycle life, and no memory effects. This rapidly evolving field urges for a systematic comparative compilation of the most recent developments on battery technology in order to keep up with the growing number of materials, strategies, and battery performance data, allowing the design of future developments in the field. Thus, this review focuses on the different materials recently developed for the different battery components—anode, cathode, and separator/electrolyte—in order to further improve LIB systems. Moreover, solid polymer electrolytes (SPE) for LIBs are also highlighted. Together with the study of new advanced materials, materials modification by doping or synthesis, the combination of different materials, fillers addition, size manipulation, or the use of high ionic conductor materials are also presented as effective methods to enhance the electrochemical properties of LIBs. Finally, it is also shown that the development of advanced materials is not only focused on improving efficiency but also on the application of more environmentally friendly materials.

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“…As the most abundant organics among biomass, cellulose, comprised of 1, 4‐β‐glucan, can facilitate the electrolyte wetting and ionic infiltration originated from its intrinsically structural and chemical features. [ 46–49 ] Especially when cellulose is acetylated into cellulose acetate (CA), the number of binding sites promising ionic affinity significantly increased owing to the electrostatic attraction or complexation effect. [ 50–53 ] This specialty inspires the reasonable speculation that cellulose‐based materials may influence the degradation chemistry of Li salts containing electrolyte through the strong mutual interaction with polar ions.…”

Section: Introductionmentioning

confidence: 99%

Marrying Ester Group with Lithium Salt: Cellulose‐Acetate‐Enabled LiF‐Enriched Interface for Stable Lithium Metal Anodes

Chen

Zheng

Liu

et al. 2021

Adv Funct Materials

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The practical applications of high‐energy‐density lithium (Li) metal batteries (LMB) have been hindered by the formation and growth of Li dendrites. Homogenizing the Li‐ion flux to suppress Li dendrites by regulating the solid electrolyte interphase (SEI) originating from electrolyte degradation is necessary but still challenging. Herein, ion‐affiliative cellulose acetate (CA) with functional Li salts is prepared to generate the SEI with fast Li+ diffusion kinetics. First, the correlations between the functional ester group and LiN(CF3SO2)2 (LiTFSI) are theoretically and experimentally identified, where CO strongly adsorbed N(CF3SO2)2− through electrostatic interaction to enhance the charge‐transfer‐promoted decomposition of LiTFSI. Furthermore, the CA with ex situ doped LiTFSI amplifies this fluorinated degradation effect, and the LiF‐enriched SEI nanostructure is consequently established in situ, as confirmed by cryogenic transmission electron microscopy. As a result, the dendritic Li growth during cycling is efficiently suppressed, and the lifespan is prolonged by more than six times at a high current density of 3 mA cm−2. This study provides insights into the interphase design for realizing ultrastable LMB.

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Pure cellulose lithium-ion battery separator with tunable pore size and improved working stability by cellulose nanofibrils

Cited by 83 publications

References 50 publications

Rational Design of Cellulose Nanofibrils Separator for Sodium-Ion Batteries

Rational Design of Cellulose Nanofibrils Separator for Sodium-Ion Batteries

Recent Advances on Materials for Lithium-Ion Batteries

Marrying Ester Group with Lithium Salt: Cellulose‐Acetate‐Enabled LiF‐Enriched Interface for Stable Lithium Metal Anodes

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