UV-cured polymer electrolyte for LiNi0.85Co0.05Al0.1O2//Li solid state battery working at ambient temperature

Wei, Zhenyao; Zhang, Zhihua; Chen, Shaojie; Wang, Wenwen; Yao, Xiayin; Deng, Yonghong; Xu, Xin

doi:10.1016/j.ensm.2019.02.004

Cited by 88 publications

(60 citation statements)

References 56 publications

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“…The glass transition temperature ( T g ) of PEGDMA‐NaFSI‐SPE membrane is around −53.2 °C and no endothermic peak can be observed according to Figure 2c. It demonstrates the SSE exits in a totally amorphous state, which could greatly facilitate its chain segments movement and enhance the ionic conductivity …”

Section: Introductionmentioning

confidence: 98%

“…Compared with inorganic electrolyte, SPEs exhibit better mechanical flexibilities and more favorable interfacial contact with electrodes, which could compensate the volume change of electrode materials and make them promising candidates for flexible ASSBs . SPEs generally consist of sodium salts (including sodium bis(trifluoromethanesulfonyl)imide(NaTFSI), sodium bis(fluorosulfonyl)imide (NaFSI), or sodium perchlorate (NaClO 4 )) and polymer matrix (such as poly(ethyleneoxide) (PEO), polyacrylonitrile, poly(vinylidene fluoride), or poly(methyl methacrylate)), where sodium salt is sodium source and polymer matrix acts as the Na + transporting host . The viability of NaFSI as an ideal salt has been exemplified in the literature because it can control the reaction with the solvent due to its unstable S–F bond .…”

Section: Introductionmentioning

confidence: 99%

“…And this technique is complicated, high‐cost, and environmentally unfriendly . Recently, the solvent‐free UV‐curing method for SPEs preparation has been demonstrated to be a facile and cost‐effective approach for large‐scale fabrication due to its low operating temperature and fast reaction rate …”

Section: Introductionmentioning

confidence: 99%

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Toward High Energy Density All Solid‐State Sodium Batteries with Excellent Flexibility

Yao

Wei

Wang

et al. 2020

Advanced Energy Materials

Self Cite

120

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All solid‐state sodium batteries (ASSBs) have attracted considerable attention due to their enhanced safety, long lifespan, and high energy density. However, several challenges have plagued the development of ASSBs, especially the relatively low ionic conductivity of solid‐state electrolytes (SSEs), large interfacial resistance, and low stability/compatibility between SSEs and electrodes. Here, a high‐performance all solid‐state sodium battery (NVP@C|PEGDMA‐NaFSI‐SPE|Na) is designed by employing carbon coated Na3V2(PO4)3 composite nanosheets (NVP@C) as the cathode, solvent‐free solid polymer electrolyte (PEGDMA‐NaFSI‐SPE) as the electrolyte and metallic sodium as the anode. The integrated electrolyte and cathode system prepared by the in situ polymerization process exhibits high ionic conductivity (≈10−4 S cm−1 at room temperature) and an outstanding electrolyte/electrode interface. Benefiting from these merits, the soft‐pack ASSB (NVP@C|PEGDMA‐NaFSI‐SPE|Na) delivers excellent cycling life over 740 cycles (capacity decay of only 0.007% per cycle) and maintains 95% of the initial reversible capacity with almost no self‐discharge even after resting for 3 months. Moreover, the bendable ASSB exhibits a high capacity of 106 mAh g−1 (corresponds to energy density of ≈355 Wh kg−1) at 0.5 C despite undergoing repeated bending for 535 cycles. This work offers a new strategy to fabricate high‐performance flexible ASSBs with a long lifespan and excellent flexibility.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Toward High Energy Density All Solid‐State Sodium Batteries with Excellent Flexibility

Yao

Wei

Wang

et al. 2020

Advanced Energy Materials

Self Cite

120

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show abstract

“…[ 66,67 ] UV curing could be conducted at ordinary temperature, processed the reaction very quickly, and appropriate for the large‐scale fabrication which considered as a coeffective method for the preparation of gel electrolytes. [ 68–70 ] Up to this end, there is no clear investigation in previous literature which focused on the behavior of the dual ceramic (LATP + LLTO) film effectiveness on the improvement of the interface layers which help to Li metal anode as well as suppress the Li dendrite growth.…”

Section: Introductionmentioning

confidence: 99%

In Situ Curing Technology for Dual Ceramic Composed by Organic–Inorganic Functional Polymer Gel Electrolyte for Dendritic‐Free and Robust Lithium–Metal Batteries

Siyal

Javed

Jatoi

et al. 2020

Adv Materials Inter

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potential applications in lithium-metal batteries (LiMBs) due to their high-energy densities and high-capacity with easy processability and lightweight. [1-5] Ceramic based electrolytes for LiMBs are real rising power sources for portable electronic, electrical, hybrid charged vehicles penetrating to heavy scale energy storage/ transportation systems owing to their safe electrochemical and high mechanical properties. [6-8] However, the applications of ceramic-based lithium-metal batteries with large capacities and power densities have been restricted due to interfacial incompatibility and thermal runway which further complicates the serious safety issues. [9,10] Therefore, extensive research has been devoted to overcome these issues, including the structural and interfacial design of ceramic electrolytes to face the key challenges of dendritic expansion and limiting the side reactions among Li-metal anode and electrolytes. [11,12] It is worth mentioning that the Li-metal is a supreme anode candidate for LiMBs to get the high energy density due to the large theoretical capacities (3860 mAh g −1) and the lowest negative potential (−3.040 V vs the hydrogen electrode). [13] Nevertheless, there is much harm when combining Li metal anode with conventional liquid electrolytes possesses (lowest unoccupied molecular orbital) lower to Fermi level of alkali metals anode, [14] such electrolytes can easily react with Li metal to form heterogeneous products and produce unstable Lithium-metal batteries (LiMBs) are promising energy storage devices due to the high capacity and minimum negative electrochemical potential. Nevertheless, their concrete applications remain disturbed by unbalanced electrolyte-electrode interfaces, limited electrochemical window, and high risk. Herein, a novel strategy to obtain dual ceramic-based electrolytes that possesses a great potential in energy storages and higher level of energy densities in LiMBs. Dual-ceramic (lithium aluminum titanium phosphate-lithium lanthanum titanium oxide (LATP-LLTO)) gel polymer electrolyte (DCGPE) film developed via the curable system aims to prepare flexible Li + interpenetrating network film to integrate the two ceramic structures with polyethylene oxide (PEO) to yield the free-standing electrolytes film for better battery safety and desired interfacial stability. The DCGPEs films present a satisfactory electrochemical performance, including good ionic conductivity, large transference number, and wide electrochemical stability window at room temperature. Most importantly, the fundamental function of LATP and LLTO is to support building a stable solid-electrolyte-interphase and limits the growth of dendrites. Thus, prepared dual ceramic-based electrolytes effectively render to inhibit lithium dendrite growth in a symmetrical cell Li//PEO + 10% LATP + 15% LLTO//Li test during charge/discharge at a current density of 2 and 0.25 mA cm −2 above 2400 h without short-circuiting occurrence at room temperature. Besides, the battery assembled of LiFePO 4 /PEO + 10% LATP + 20%...

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“…Therefore, the modification of PEO-based SPEs mainly focus on how to reduce the crystallinity of PEO to improve the ionic conductivity. Considerable methods have been adopted, such as adding plasticizers [24] and inorganic additives [31], comb modifying [32], cross-linking [33,34], block copolymerization [35,36] and polymer blending [37]. Embedding nanomaterials into SPEs was firstly reported by Steele and Weston in 1982 [38].…”

Section: Introductionmentioning

confidence: 99%

Al4B2O9 nanorods-modified solid polymer electrolytes with decent integrated performance

Guo

Peng

et al. 2020

Sci. China Mater.

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With the proliferation of energy storage and power applications, electric vehicles particularly, solid-state batteries are considered as one of the most promising strategies to address the ever-increasing safety concern and high energy demand of power devices. Here, we demonstrate the Al 4 B 2 O 9 nanorods-modified poly(ethylene oxide) (PEO)-based solid polymer electrolyte (ASPE) with high ionic conductivity, wide electrochemical window, decent mechanical property and nonflammable performance. Specifically, because of the longer-range ordered Li + transfer channels conducted by the interaction between Al 4 B 2 O 9 nanorods and PEO, the optimal ASPE (ASPE-1) shows excellent ionic conductivity of 4.35×10 −1 and 3.1×10 −1 S cm −1 at 30 and 60°C, respectively. It also has good electrochemical stability at 60°C with a decomposition voltage of 5.1 V. Besides, the assembled LiFePO 4 //Li cells show good cycling performance, delivering 155 mA h g −1 after 300 cycles at 1 C under 60°C, and present excellent low-temperature adaptability, retaining over 125 mA h g −1 after 90 cycles at 0.2 C under 30°C. These results verify that the addition of Al 4 B 2 O 9 nanorods can effectively promote the integrated performance of solid polymer electrolyte.

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UV-cured polymer electrolyte for LiNi0.85Co0.05Al0.1O2//Li solid state battery working at ambient temperature

Cited by 88 publications

References 56 publications

Toward High Energy Density All Solid‐State Sodium Batteries with Excellent Flexibility

Toward High Energy Density All Solid‐State Sodium Batteries with Excellent Flexibility

In Situ Curing Technology for Dual Ceramic Composed by Organic–Inorganic Functional Polymer Gel Electrolyte for Dendritic‐Free and Robust Lithium–Metal Batteries

Al4B2O9 nanorods-modified solid polymer electrolytes with decent integrated performance

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