An Extremely Fast Charging Li3V2(PO4)3 Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

Ni, Qiao; Zheng, Lumin; Bai, Ying; Liu, Tongchao; Ren, Haixia; Xu, Huajie; Wu, Chuan; Lü, Jun

doi:10.1021/acsenergylett.0c00702

Cited by 76 publications

(46 citation statements)

References 47 publications

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“…PVA/CNC membranes show smaller positive and negative peaks around 0 V and similar electrochemical stability at high voltages (see inset in Figure 4e), making them attractive for high‐energy cathodes such as LiNi 0.5 Mn 1.5 O 4 (cutoff voltage of ≈4.7 V versus Li/Li + ), [ 53 ] LiNi 0.6 Co 0.2 Mn 0.2 O 2 (≈4.3 V versus Li/Li + ), [ 54 ] or Li 3 V 2 (PO 4 ) 3 (4.8 V versus Li/Li + ). [ 55 ] In comparison with the intense peaks of 0.578 mA·cm −2 for Celgard, a low current of less than 0.15 mA·cm −2 at nearly 0 V versus Li/Li + for PVA/CNC membranes suggests an even Li plating/stripping onto the working electrodes.…”

Section: Resultsmentioning

confidence: 99%

Transient Rechargeable Battery with a High Lithium Transport Number Cellulosic Separator

Mittal

Ojanguren

Cavasin

et al. 2021

Adv Funct Materials

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Transient batteries play a pivotal role in the development of fully autonomous transient devices, which are designed to degrade after a period of stable operation. Here, a new transient separator‐electrolyte pair is introduced for lithium ion batteries. Cellulose nanocrystals (CNCs) are selectively located onto the nanopores of polyvinyl alcohol membranes, providing mobile ions to interact with the liquid electrolyte. After lithiation of CNCs, membranes with electrolyte uptake of 510 wt%, ionic conductivities of 3.077 mS·cm–1, electrochemical stability of 5.5 V versus Li/Li+, and high Li+ transport numbers are achieved. Using an organic electrolyte, the separators enable stable Li metal deposition with no dendrite growth, delivering 94 mAh·g–1 in Li/LiFePO4 cells at 100 mA·g–1 after 200 cycles. To make the separator‐electrolyte pair transient and non‐toxic, the organic electrolyte is replaced by a biocompatible ionic liquid. As a proof of concept, a fully transient Li/V2O5 cell is assembled, delivering 55 mAh·g–1 after 200 cycles at 100 mA·g–1. Thanks to the reversible Li plating/stripping, dendrite growth suppression, capacity retention, and degradability, these materials hold a bright future in the uptake of circular economy concepts applied to the energy storage field.

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Section: Resultsmentioning

confidence: 99%

Transient Rechargeable Battery with a High Lithium Transport Number Cellulosic Separator

Mittal

Ojanguren

Cavasin

et al. 2021

Adv Funct Materials

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“…Graphitic N is conducive to improving the electronic conductivity of carbon framework. (2) The N or O doping is both conducive to boosting surface wettability of electrode, thus enhancing the interactions between electrode and electrolyte. 56 (3) The pyridinic/ pyrrolic N species and some oxygen-containing groups are electrochemical active sites for providing pseudocapacitance (as shown in Figure S14).…”

Section: The Microstructure and Composition Of N-pcm-xmentioning

confidence: 99%

“…To promote the advances of next-generation electrochemical energy storage devices, great efforts have devoted to developing novel advanced batteries systems (such as Li-ion batteries, Na-ion batteries, Al-ion batteries, etc. ), [1][2][3] optimizing electrolyte chemistry, 4 and designing highperformance electrode materials. 5,6 Compared to many secondary batteries, supercapacitors (SCs) have also attracted intensive attention due to their relatively higher power density, faster charge/discharge rate, and longlasting cycle life.…”

Section: Introductionmentioning

confidence: 99%

Nature‐inspired porous multichannel carbon monolith: Molecular cooperative enables sustainable production and high‐performance capacitive energy storage

Liu

Zheng

et al. 2021

InfoMat

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The advancement of supercapacitors (SCs) is closely bound up with the breakthrough of rational design of energy materials. Freestanding and thick carbon (FTC) materials with well-organized porous structure is promising SC electrode delivering high areal capacitive performance. However, controllable and sustainable fabrication of such FTC electrode is still of great challenges. Inspired by natural honeycombs with cross-linked multichannel structure, herein, an innovative molecular-cooperative-interaction strategy is elaborately provided to realize honeycomb-like FTC electrodes. The nitrogen-doped porous carbon monolith (N-PCM) is obtained with advantages of interconnect pore structure and abundant nitrogen doping. Such strategy is based on naturally abundant molecular precursors, and free of pore-templates, expensive polymerization catalyst, and dangerous reaction solvent, rendering it a sustainable and cost-effective process. Systematic control experiments reveal that strong interactions among molecular precursors promise the structural stability of N-PCM during carbonization, and rational selection of molecular precursors with chemical blowing features is key step for well-developed honeycomb-like pore structure. Interestingly, the optimized sample exhibits hierarchical pore structure with specific surface area of 626.4 m 2 g À1 and rational N-doping of 7.01 wt%. The derived SC electrode with high mass loading of 40.1 mg cm À2 shows an excellent areal capacitance of 3621 mF cm À2 at 1 mA cm À2 and good rate performance with 2920 mF cm À2 at 25 mA cm À2 . Moreover, the constructed aqueous symmetric SC and quasi-solid-state SC produce high energy densities of 0.32 and 0.27 mWh cm À2 , respectively. We believe that such a composition/microstructure controllable method can promote the fabrication and development of other thick electrodes for energy storage devices.

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“…Therefore, the development of suitable cathode materials is essential for commercial application of SIBs. The investigated cathode materials include layered transition metal oxides, [ 7,8 ] polyanion compounds, [ 9–12 ] Prussian blue analogues [ 13,14 ] and organic salts. [ 15 ] Among them, layered transition metal oxides are the most promising candidates due to their appropriate operational potentials, 2D Na + diffusion channels, and the scalable and simple synthesis.…”

Section: Introductionmentioning

confidence: 99%

Unraveling Anionic Redox for Sodium Layered Oxide Cathodes: Breakthroughs and Perspectives

et al. 2022

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Sodium‐ion batteries (SIBs) as the next generation of sustainable energy technologies have received widespread investigations for large‐scale energy storage systems (EESs) and smart grids due to the huge natural abundance and low cost of sodium. Although the great efforts are made in exploring layered transition metal oxide cathode for SIBs, their performances have reached the bottleneck for further practical application. Nowadays, anionic redox in layered transition metal oxides has emerged as a new paradigm to increase the energy density of rechargeable batteries. Based on this point, in this review, the development history of anionic redox reaction is attempted to systematically summarize and provide an in‐depth discussion on the anionic redox mechanism. Particularly, the major challenges of anionic redox and the corresponding available strategies toward triggering and stabilizing anionic redox are proposed. Subsequently, several types of sodium layered oxide cathodes are classified and comparatively discussed according to Na‐rich or Na‐deficient materials. A large amount of progressive characterization techniques of anionic oxygen redox is also summarized. Finally, an overview of the existing prospective and the future development directions of sodium layered transition oxide with anionic redox reaction are analyzed and suggested.

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An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

Cited by 76 publications

References 47 publications

Transient Rechargeable Battery with a High Lithium Transport Number Cellulosic Separator

Transient Rechargeable Battery with a High Lithium Transport Number Cellulosic Separator

Nature‐inspired porous multichannel carbon monolith: Molecular cooperative enables sustainable production and high‐performance capacitive energy storage

Unraveling Anionic Redox for Sodium Layered Oxide Cathodes: Breakthroughs and Perspectives

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