Anion‐Sorbent Composite Separators for High‐Rate Lithium‐Ion Batteries

Zhang, Chen; Shen, Li; Shen, John; Liu, Fang; Chen, Gen; Tao, Ran; Ma, Shengxiang; Peng, Yiting; Lu, Yunfeng

doi:10.1002/adma.201808338

Cited by 234 publications

(176 citation statements)

References 49 publications

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“…Ideally, proton-exchange membrane fuel cells (PEMFCs) should be operated at high temperature (>100 °C) to eliminate CO poisoning and to promote the electrochemical reactions. [18] Copyright 2019, Wiley-VCH. Wu et al [128] proposed the design of electrospun Zn-MOFs/SPPESK (sulfonated poly(phthalazinone ether sulfone ketone)) nanofiber membranes for PEMFCs.…”

Section: Electrochemical Energy Storage and Conversionmentioning

confidence: 99%

Section: Applications For Mof Nanofibersmentioning

confidence: 99%

“…MOFs are an emerging class of crystalline materials that are composed of metal ions connected by organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface‐to‐volume ratio, MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery . Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery.…”

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Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. [20][21][22][23][24][25][26][27] Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties. MOFs are generally prepared as bulk form through traditional hydrothermal or solvothermal synthesis. [28][29][30][31] In order to expand the application range, suitable pathways for the structuring of MOF powders into a functional architecture or devices are highly desirable.Currently, intensive efforts are focusing on the structuring of MOFs at the mesoscopic/macroscopic scale for the use as coatings, membranes, or sophisticated architectures in specific devices and applications. [32][33][34][35] A major difference in the structuring of MOFs into complex shapes compared to inorganic microporous materials, such as zeolites or silica, is the fact that most inorganic binders cannot be used for MOFs as these binders usually require heat treatment. The intrinsic fragility of MOFs needs to be considered which is related to the inorganic/organic hybrid character of this class of materials and the resulting limited thermal and mechanical stability. Alternatively, a more effective way to structure MOFs is the combination with polymer materials. The polymer which acts as a binder improves the mechanical flexibility and ensures chemical stability. Numerous methods have been developed for structuring MOF-polymer compositions including hard or soft templates, spin-or dip-coating, spray-drying, printing, or lithography approaches. [36][37][38] The integration of MOFs into a polymer matrix can result in poor MOF-polymer dispersion and compatibility issues owing to the different physical and chemical properties for the two kinds of materials and this is a challenge in some applications, e.g., in MOF-based mixed matrix membranes for gas separation. [39][40][41][42] The poor interfacial compatibility would lead to agglomeration of MOF particles, causing the formation of nonselective voids between the MOFs particles and the polymer.Electrospinning is a fabrication method to produce continuous ultrafine fibers with diameters in the range of a few tens of nanometers to a few micrometers in the form of nonwoven mats, yarns, etc. The mechanism of electrospinning is based Herein, recent developments of metal-organic frameworks (MOFs) structured into nanofibers by electrospinning are summarized, including the fabrication, post-treatment via pyrolysis, properties, and use of the resulting MOF nanofiber architectures. The fabrication and post-treatment of the MOF nanofiber architectures are described systematically by two routes: i) the dire...

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Section: Electrochemical Energy Storage and Conversionmentioning

confidence: 99%

Section: Applications For Mof Nanofibersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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“…When coupled with the MnO 2 cathode, it delivered a reversible capacity of 180.3 mAh g À1 and high capacity retention of 88.9 % after 600 cycles with a MnO 2 mass loading up to 4.2 mg cm À2 . This work enlarges the application of MOFs from non-aqueous lithium batteries to aqueous zinc batteries [25] and provides an alternative route to realize a supersaturated inner layer to drive uniform metal deposition for other types of rechargeable batteries.…”

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Constructing a Super‐Saturated Electrolyte Front Surface for Stable Rechargeable Aqueous Zinc Batteries

et al. 2020

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Rechargeable aqueous zinc batteries (RAZB) have been re-evaluated because of the superiority in addressing safety and cost concerns. Nonetheless, the limited lifespan arising from dendritic electrodeposition of metallic Zn hinders their further development. Herein, a metal-organic framework (MOF) was constructed as front surface layer to maintain a super-saturated electrolyte layer on the Zn anode. Raman spectroscopy indicated that the highly coordinated ion complexes migrating through the MOF channels were different from the solvation structure in bulk electrolyte. Benefiting from the unique super-saturated front surface, symmetric Zn cells survived up to 3000 hours at 0.5 mA cm À2 , near 55-times that of bare Zn anodes. Moreover, aqueous MnO 2 -Zn batteries delivered a reversible capacity of 180.3 mAh g À1 and maintained a high capacity retention of 88.9 % after 600 cycles with MnO 2 mass loading up to 4.2 mg cm À2 .

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Stabilizing Polymer–Lithium Interface in a Rechargeable Solid Battery

Yan

Liang

Zuo

et al. 2019

Adv Funct Materials

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Solid polymer electrolytes (SPEs) are promising candidates for developing highenergy-density Li metal batteries due to their flexible processability. However, the low mechanical strength as well as the inferior interfacial regulation of ions between SPEs and Li metal anode limit the suppress ion of Li dendrites and destabilize the Li anode. To meet these challenges, interfacial engineering aiming to homogenize the distribution of Li + /electron accompanied with enhanced mechanical strength by Mg 3 N 2 layer decorating polyethylene oxide is demonstrated. The intermediary Mg 3 N 2 in situ transforms to a mixed ion/ electron conducting interlayer consisting of a fast ionic conductor Li 3 N and a benign electronic conductor Mg metal, which can buffer the Li + concentration gradient and level the nonuniform electric current distribution during cycling, as demonstrated by a COMSOL Multiphysics simulation. These characteristics endow the solid full cell with a dendrite-free Li anode and enhanced cycling stability and kinetics. The innovative interface design will accelerate the commercial application of high-energy-density solid batteries.as well as low cost. [4] Nevertheless, the relatively low ionic conductivity of SPEs leads sluggish Li + transfer kinetics, limiting the full play of cell's capacity, while the low transference number hinds the efficient regulation of Li + as well as its low mechanical strength results in the limited capability to suppress Li dendrites (Figure 1a,b). [5] Great effort has been dedicated to modifying SPEs via combining rigid skeletons or layers in order to increase the ionic conductivities and improve mechanical strength. [6] However, the effect of interface regulation always wears off after long cycles because of the intrinsic relatively low transference number of SPEs. [7] In this premise, nanosized inorganic fillers are introduced to SPEs to increase the transference number and immobilize the anions. [8] Note that the large portion of ceramic impedes the pursue of high-energy-density Li metal batteries. Therefore, a facile interfacial modification between SPEs and Li anode, buffering the Li + concentration gradient and leveling the nonuniform current distribution without sacrificing low cost and high energy density, is of urgent demanding. [9] Herein, an in situ formed mixed ion/electron conducting interlayer (MIECI) by an intermediary Mg 3 N 2 layer decorated on polyethylene oxide (PEO) (noted as PEO-Mg 3 N 2 ) to manipulate ion and electron distributions was achieved (Figure 1c-e) in the solid system. The PEO membrane has a compact contact with cathode accelerating the Li + transport, while the Mg 3 N 2 layer converses to Li 3 N and magnesium metal ( Figure S1, Supporting Information) during cycling via in situ electrochemical reaction with Li anode. Li 3 N is well known as a fast Li + conductor of ≈10 −3 S cm −1 at room temperature and has superior stability against Li metal, conducting to realize rapid Li + transfer and mitigate the Li + concentration gradient. [10] Moreover...

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Anion‐Sorbent Composite Separators for High‐Rate Lithium‐Ion Batteries

Cited by 234 publications

References 49 publications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Constructing a Super‐Saturated Electrolyte Front Surface for Stable Rechargeable Aqueous Zinc Batteries

Stabilizing Polymer–Lithium Interface in a Rechargeable Solid Battery

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