Fast charging of energy-dense lithium-ion batteries

Wang, Chao-Yang; Li, Teng; Yang, Xiaoguang; Ge, Shanhai; Stanley, Nathaniel V.; Rountree, Eric S.; Leng, Yongjun; McCarthy, Brian D.

doi:10.1038/s41586-022-05281-0

Cited by 435 publications

(205 citation statements)

References 45 publications

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“…Amidst increasing environmental pollution and the gradual exhaustion of non-renewable energy resources, the development of controllable devices for energy storage, conversion, and protection, such as smart windows [ 1 , 2 , 3 ], micro-supercapacitors [ 4 , 5 ], lithium-ion batteries [ 6 , 7 ], electrochemical capacitors [ 8 , 9 ], and solar cells [ 10 , 11 ], has become a global priority. Electrochromic (EC) devices and batteries/pseudocapacitors have similar electrode materials, device structures, and faradaic reactions [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Sea-Cucumber-like Microstructure Polyoxometalate/TiO2 Nanocomposite Electrode for High-Performance Electrochromic Energy Storage Devices

Zhou

Liu

et al. 2023

Molecules

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The key challenge in the practical application of electrochromic energy storage devices (EESDs) is the fabrication of high-performance electrode materials. Herein, we deposited K7[La(H2O)x(α2-P2W17O61)] (P2W17La) onto TiO2 nanowires (NW) to construct an NW–P2W17La nanocomposite using a layer-by-layer self-assembly method. In contrast to the pure P2W17La films, the nanocomposite exhibits enhanced electrochromic and electrochemical performance owing to the 3D sea-cucumber-like microstructure. An EESD using the NW–P2W17La film as the cathode exhibited outstanding electrochromic and energy storage properties, with high optical modulation (48.6% at 605 nm), high switching speeds (tcoloring = 15 s, tbleaching = 4 s), and high area capacitance (5.72 mF cm−2 at 0.15 mA cm−2). The device can reversibly switch between transparent and dark blue during the charge/discharge process, indicating that electrochromic contrast can be used as a quantitative indicator of the energy storage status.

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Section: Introductionmentioning

confidence: 99%

Sea-Cucumber-like Microstructure Polyoxometalate/TiO2 Nanocomposite Electrode for High-Performance Electrochromic Energy Storage Devices

Zhou

Liu

et al. 2023

Molecules

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“…5 However, LIBs with Ni-rich layered oxide cathodes and lithiated graphite as the anode materials can offer specific energies of only approximately 250−300 Wh kg −1 , which is too low relative to the requirements of the EV market before 2030 (∼500 Wh kg −1 ). 6,7 In recent years, new generation anode architectures with ultrahigh capacity have been developed. Among them, metallic lithium is regarded as the most promising anode material due to its extremely high theoretical capacity (3860 mAh/g), very low standard chemical redox potential (−3.04 V vs SHE), and low density (0.534 g/cm 3 ).…”

Section: Introductionmentioning

confidence: 99%

“…In the past few decades, rechargeable lithium-ion batteries (LIBs) have gradually replaced traditional secondary batteries, such as nickel-cadmium and lead-acid, owing to their favorable performance with respect to their long cycle life, high energy, high power density, and environmental friendliness. − Their wide applicability has enabled the rise of earphones and laptops in electric vehicles (EVs) . However, LIBs with Ni-rich layered oxide cathodes and lithiated graphite as the anode materials can offer specific energies of only approximately 250–300 Wh kg –1 , which is too low relative to the requirements of the EV market before 2030 (∼500 Wh kg –1 ). , In recent years, new generation anode architectures with ultrahigh capacity have been developed. Among them, metallic lithium is regarded as the most promising anode material due to its extremely high theoretical capacity (3860 mAh/g), very low standard chemical redox potential (−3.04 V vs SHE), and low density (0.534 g/cm 3 ). − Despite these merits, existing technologies remain insufficient to enable lithium–metal batteries to be implemented at a practical and commercial level.…”

Section: Introductionmentioning

confidence: 99%

Characterizing the Impact of Mg-Doped Li Metal Anode and Excess Electrons on High Concentration Electrolyte Interfacial Stability: A Theoretical Study

Pan

Lin

et al. 2023

ACS Appl. Energy Mater.

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The development of next-generation rechargeable lithium–metal batteries (LMBs) is critical to improving the performance of existing lithium-ion batteries. However, uncontrollable lithium dendrite growth and unstable solid electrolyte interphases (SEI) in lithium–metal anodes result in poor cycling efficiency and pose considerable safety risks, limiting their practical applications. A previous study showed that a marginal amount of Mg doping on the Li anode may aid in the formation of major SEI components on the surface, thereby improving the electrochemical performance of LMBs. However, the detailed decomposition mechanism of the electrolyte and the stability of the SEI layer following this doping process remain unknown. Therefore, in this study, ab initio molecular dynamics (AIMD) simulations were applied to investigate the interfacial reactions between the electrolytes and the Mg-doped Li metal anode surface. Commercialized lithium salts, lithium hexafluorophosphate (LiPF6), ethylene carbonate (EC), and diethyl carbonate (DEC) were selected as the electrolyte mixtures in our 3.6 M concentration model. Our results demonstrate that the Mg-doped lithium anode facilitates the decomposition of LiPF6 and solvents, forming a denser SEI layer than that of the pristine Li anode. Furthermore, we calculated the charged systems to simulate the conditions during the charging process and found that an increased amount of LiPF6 could easily decompose and form a fluoride-rich SEI layer in the charged system, especially in the Mg-doped case. We therefore confirmed that the Mg-doped Li anode facilitated the formation of a stable SEI layer to suppress the dendrite growth.

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“…Li ion batteries (LIBs) are commercially used as energy storage devices for EVs owing to their good cyclability, safety, and rate capability [ 7 , 9 , 10 ]. Unfortunately, the energy density of the currently available commercial LIBs is limited to less than 250 Wh kg −1 , which is insufficient to provide a decent driving range for EVs [ 8 , 11 ]. Therefore, increasing the energy density of batteries is demanded.…”

Section: Introductionmentioning

confidence: 99%

“…Li metal has a high specific capacity (3860 mAh g −1 ) and the lowest reduction potential (−3.04 V versus the standard hydrogen electrode at room temperature). These advantages render it the ultimate candidate as a next-generation rechargeable battery anode material [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. However, Li metal suffers from a huge volume change during repeated Li deposition/dissolution processes [ 8 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Size Effect of a Piezoelectric Material as a Separator Coating Layer for Suppressing Dendritic Li Growth in Li Metal Batteries

et al. 2022

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Li metal has been intensively investigated as a next-generation rechargeable battery anode. However, its practical application as the anode material is hindered by the deposition of dendritic Li. To suppress dendritic Li growth, introducing a modified separator is considered an effective strategy since it promotes a uniform Li ion flux and strengthens thermal and mechanical stability. Herein, we present a strategy for the surface modification of separator, which involves coating the separator with a piezoelectric material (PM). The PM-coated separator shows higher thermal resistance than the pristine separator, and its modified surface properties enable the homogeneous regulation of the Li-ion flux when the separator is punctured by Li dendrite. Furthermore, PM was synthesized in different solvents via solvothermal method to explore the size effect. This strategy would be helpful to overcome the intrinsic Li metal anode problems.

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Fast charging of energy-dense lithium-ion batteries

Cited by 435 publications

References 45 publications

Sea-Cucumber-like Microstructure Polyoxometalate/TiO2 Nanocomposite Electrode for High-Performance Electrochromic Energy Storage Devices

Sea-Cucumber-like Microstructure Polyoxometalate/TiO2 Nanocomposite Electrode for High-Performance Electrochromic Energy Storage Devices

Characterizing the Impact of Mg-Doped Li Metal Anode and Excess Electrons on High Concentration Electrolyte Interfacial Stability: A Theoretical Study

Size Effect of a Piezoelectric Material as a Separator Coating Layer for Suppressing Dendritic Li Growth in Li Metal Batteries

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