30 Years of Lithium‐Ion Batteries

Li, Matthew; Lü, Jun; Chen, Zhongwei; Amine, Khalil

doi:10.1002/adma.201800561

Cited by 3,809 publications

(2,571 citation statements)

References 271 publications

(275 reference statements)

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“…As depicted in Figure 1b, a two-step reaction combining miniemulsion and solvothermal method was also employed to synthesize nanostructured porous polymers. 2,6-dibromoanthraquinone (1) and 1,3,5-triethynylbenzene (2) were first subjected to the Pd-catalyzed Sonogashira crosscoupling in a toluene/triethylamine-in-water miniemulsion system. The formed particles, that are hyperbranched but without permanent micropores, further reacted with the rest of monomers or oligomers in the second step where the hyperbranched polymer particles became closed, creating a nanostructured polymer network.…”

Section: Synthesis Of Anthraquinone-based Rcmpsmentioning

confidence: 99%

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New Anthraquinone‐Based Conjugated Microporous Polymer Cathode with Ultrahigh Specific Surface Area for High‐Performance Lithium‐Ion Batteries

Molina

Patil

Ventosa

et al. 2019

Adv Funct Materials

109

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Redox-active conjugated microporous polymers (RCMPs) polymerized by conventional methods are commonly obtained as irregular insoluble solid particles making the electrode processing difficult. In this work, the synthesis of RCMP based on anthraquinone moieties (IEP-11) is developed via a two-step pathway combining miniemulsion and solvothermal techniques that results in polymer nanostructures that are much easier to disperse in solvents facilitating the fabrication of electrodes. Interestingly, this synthetic approach is also found to have an important impact on the inherent morphology of IEP-11 that exhibits a dual porosity combining micro and mesopores with a specific surface area as high as 2200 m 2 g −1 , which is one of the highest values reported for RCMPs. Moreover, the compactness of the electrodes is also improved, the resulting electrodes have triple the density than those obtained with conventional methods. Consequently, when these electrodes are tested as cathodes in Li-ion battery, they deliver high gravimetric capacities (≈100 mAh g −1 ) and extraordinary rate capability keeping 76% of discharge capacity when charged-discharged in only 12 min (@5 C). Moreover, the insoluble and robust conjugated porous structure provides IEP-11-E12 with an unprecedented cycling stability retain ≈90% and ≈60% of its initial capacity after 5000 (@2 C) and 80 000 cycles (@30 C), respectively.

show abstract

Section: Synthesis Of Anthraquinone-based Rcmpsmentioning

confidence: 99%

“…[1,2] Partly, this is due to rapid advancement of inorganic intercalation compounds and carbon-involved composite electrode materials. [1,2] Partly, this is due to rapid advancement of inorganic intercalation compounds and carbon-involved composite electrode materials.…”

Section: Introductionmentioning

confidence: 99%

New Anthraquinone‐Based Conjugated Microporous Polymer Cathode with Ultrahigh Specific Surface Area for High‐Performance Lithium‐Ion Batteries

Molina

Patil

Ventosa

et al. 2019

Adv Funct Materials

109

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“…[1][2][3][4] In response to this demand, enormous time and efforts have been invested in searching for satisficing solutions to achieve with an idea for designing Na + deep doping in LMR cathodes uniformly to avoid the formation of cracks, maintain the integrity of electrode particles during prolonged cycles, and utilize the Na + 's own intrinsically high bond strength with oxygen framework to inhibit the oxygen loss and preserve the layered structure. [1][2][3][4] In response to this demand, enormous time and efforts have been invested in searching for satisficing solutions to achieve with an idea for designing Na + deep doping in LMR cathodes uniformly to avoid the formation of cracks, maintain the integrity of electrode particles during prolonged cycles, and utilize the Na + 's own intrinsically high bond strength with oxygen framework to inhibit the oxygen loss and preserve the layered structure.…”

Section: Introductionmentioning

confidence: 99%

Uniform Na⁺ Doping‐Induced Defects in Li‐ and Mn‐Rich Cathodes for High‐Performance Lithium‐Ion Batteries

Liu

et al. 2019

Advanced Science

100

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The corrosion of Li‐ and Mn‐rich (LMR) electrode materials occurring at the solid–liquid interface will lead to extra electrolyte consumption and transition metal ions dissolution, causing rapid voltage decay, capacity fading, and detrimental structure transformation. Herein, a novel strategy is introduced to suppress this corrosion by designing an Na + ‐doped LMR (Li 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 2 ) with abundant stacking faults, using sodium dodecyl sulfate as surfactant to ensure the uniform distribution of Na + in deep grain lattices—not just surface‐gathering or partially coated. The defective structure and deep distribution of Na + are verified by Raman spectrum and high‐resolution transmission electron microscopy of the as‐prepared electrodes before and after 200 cycles. As a result, the modified LMR material shows a high reversible discharge specific capacity of 221.5 mAh g −1 at 0.5C rate (1C = 200 mA g −1 ) after 200 cycles, and the capacity retention is as high as 93.1% which is better than that of pristine‐LMR (64.8%). This design of Na + is uniformly doped and the resultanting induced defective structure provides an effective strategy to enhance electrochemical performance which should be extended to prepare other advanced cathodes for high performance lithium‐ion batteries.

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“…[1][2][3][4][5] Lithium-sulfur batteries are appealing to fulfill these needs as a result of their high charge-storage capacity and low cost. [1][2][3][4][5] Lithium-sulfur batteries are appealing to fulfill these needs as a result of their high charge-storage capacity and low cost.…”

Section: Introductionmentioning

confidence: 99%

A Li₂S‐TiS₂‐Electrolyte Composite for Stable Li₂S‐Based Lithium–Sulfur Batteries

Chung

Manthiram

2019

Advanced Energy Materials

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Despite these advantages, challenges remain in developing Li 2 S cathodes with high charge-storage capacity and electrochemical stability. [8,[20][21][22] For example, Li 2 S suffers from high ionic and electronic resistivity. [7,20,21] The resulting electrochemical inactivity of pristine Li 2 S causes a high 4.0 V (Li/Li + ) overpotential during the initial charging process, which can cause an instability of the electrode and electrolyte, leading to a poor electrochemical efficiency. [18,19,23] After the initial activation, the low ionic and electronic conductivity of Li 2 S and the electrochemical inactivity of the unactivated Li 2 S that remains in the cathode cause a poor electrochemical utilization and reversibility of the cell during subsequent cycling. [7,24,25] Besides the material challenges brought about by Li 2 S, polysulfides (Li 2 S x with x = 4-8) form immediately when Li 2 S is activated and continue to be generated and accumulated during the charge-discharge process. [25][26][27] Although polysulfides have high electrochemical activity for activating the pristine Li 2 S to enhance the reaction kinetics of the Li 2 S cathode, [6,28,29] the resulting polysulfides also easily dissolve in the liquid electrolyte. [21,22,28] The dissolved polysulfides have a high mobility, allowing them to diffuse out from the cathode to the anode region of the cell, where they subsequently corrode the lithium-metal anode and irreversibly relocate and deposit throughout the cell. [28,29] The degradation of both the anode and the cathode results in a fast capacity fade and short cycle life. [20][21][22]28] These intrinsic material characteristics (e.g., low conductivity, high overpotential, and uncontrollable polysulfide relocation) further exacerbate the extrinsic challenges of this technology (e.g., insufficient amount of active material, high amount of electrolyte, and low reversible capacity), which have delayed the commercialization of Li 2 S cathodes. [2,3,30] To overcome these challenges, various approaches have been proposed to reduce the overpotential associated with the high activation overpotential of Li 2 S as well as to limit the instability and inefficiency caused by the insulating nature of Li 2 S and the irreversible diffusion of polysulfides. [7,8,[20][21][22] One approach is to reduce the particle size of Li 2 S, embedding these nanoparticles in a conductive matrix to ensure facile electron and ion access. [12,31,32] Such Li 2 S-based nanocomposites have been demo nstrated with carbon nanotubes, [10,33] carbon nanofibers, [34] porous carbon, [9] (reduced) graphene oxide, [35,36] carbon Li 2 S is a fully lithiated sulfur-based cathode with a high theoretical capacity of 1166 mAh g −1 that can be coupled with lithium-free anodes to develop high-energy-density lithium-sulfur batteries. Although various approaches have been pursued to obtain a high-performance Li 2 S cathode, there are still formidable challenges with it (e.g., low conductivity, high overpotential, and irreversible polysulfide diffusion) an...

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30 Years of Lithium‐Ion Batteries

Cited by 3,809 publications

References 271 publications

New Anthraquinone‐Based Conjugated Microporous Polymer Cathode with Ultrahigh Specific Surface Area for High‐Performance Lithium‐Ion Batteries

New Anthraquinone‐Based Conjugated Microporous Polymer Cathode with Ultrahigh Specific Surface Area for High‐Performance Lithium‐Ion Batteries

Uniform Na⁺ Doping‐Induced Defects in Li‐ and Mn‐Rich Cathodes for High‐Performance Lithium‐Ion Batteries

A Li₂S‐TiS₂‐Electrolyte Composite for Stable Li₂S‐Based Lithium–Sulfur Batteries

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30 Years of Lithium‐Ion Batteries

Cited by 3,809 publications

References 271 publications

New Anthraquinone‐Based Conjugated Microporous Polymer Cathode with Ultrahigh Specific Surface Area for High‐Performance Lithium‐Ion Batteries

New Anthraquinone‐Based Conjugated Microporous Polymer Cathode with Ultrahigh Specific Surface Area for High‐Performance Lithium‐Ion Batteries

Uniform Na+ Doping‐Induced Defects in Li‐ and Mn‐Rich Cathodes for High‐Performance Lithium‐Ion Batteries

A Li2S‐TiS2‐Electrolyte Composite for Stable Li2S‐Based Lithium–Sulfur Batteries

Contact Info

Product

Resources

About

Uniform Na⁺ Doping‐Induced Defects in Li‐ and Mn‐Rich Cathodes for High‐Performance Lithium‐Ion Batteries

A Li₂S‐TiS₂‐Electrolyte Composite for Stable Li₂S‐Based Lithium–Sulfur Batteries