Highly‐Cyclable Room‐Temperature Phosphorene Polymer Electrolyte Composites for Li Metal Batteries

Rojaee, Ramin; Cavallo, Salvatore; Mogurampelly, Santosh; Wheatle, Bill K.; Yurkiv, Vitaliy; Deivanayagam, Ramasubramonian; Foroozan, Tara; Rasul, Golam; Sharifi‐Asl, Soroosh; Phakatkar, Abhijit H.; Cheng, Meng; Son, Seoung‐Bum; Pan, Yayue; Mashayek, Farzad; Ganesan, Venkat; Shahbazian‐Yassar, Reza

doi:10.1002/adfm.201910749

Cited by 85 publications

(77 citation statements)

References 99 publications

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“…[ 5 ] Moreover, based on the fractional Walden rule, the ionic conductivity of the polymers is inverse to their viscosity. [ 45–47 ] Therefore, the increase in viscosity of CPE has been reported as a reason to lead to sluggish lithium‐ion transport through the electrolytes and lower the ionic conductivity. [ 48 ] Interestingly, the apparent viscosity of the CPE in the shear rate range of 10 −2 to 10 s −1 was increased by adding S‐hBN, while the ionic conductivity slightly increased from 0.39 × 10 −3 to 0.47 × 10 −3 S cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Direct Ink Writing of Polymer Composite Electrolytes with Enhanced Thermal Conductivities

Cheng

Ramasubramanian

Rasul

et al. 2020

Adv Funct Materials

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Proper distribution of thermally conductive nanomaterials in polymer batteries offers new opportunities to mitigate performance degradations associated with local hot spots and safety concerns in batteries. Herein, a direct ink writing (DIW) method is utilized to fabricate polyethylene oxide (PEO) composite polymers electrolytes (CPE) embedded with silane‐treated hexagonal boron nitride (S‐hBN) platelets and free of any volatile organic solvents. It is observed that the S‐hBN platelets are well aligned in the printed CPE during the DIW process. The in‐plane thermal conductivity of the printed CPE with the aligned S‐hBN platelets is 1.031 W −1 K−1, which is about 1.7 times that of the pristine CPE with the randomly dispersed S‐hBN platelets (0.612 W −1 K−1). Thermal imaging shows that the peak temperature (°C) of the printed electrolytes is 24.2% lower than that of the CPE without S‐hBN, and 10.6% lower than that of the CPE with the randomly dispersed S‐hBN, indicating a superior thermal transport property. Lithium‐ion half‐cells made with the printed CPE and LiFePO4 cathode displayed high specific discharge capacity of 146.0 mAh g−1 and stable Coulombic efficiency of 91% for 100 cycles at room temperature. This work facilitates the development of printable thermally‐conductive polymers for safer battery operations.

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Section: Resultsmentioning

confidence: 99%

Direct Ink Writing of Polymer Composite Electrolytes with Enhanced Thermal Conductivities

Cheng

Ramasubramanian

Rasul

et al. 2020

Adv Funct Materials

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“…The modification method is generally coating, that is, by coating the surface of the LNMO material to form an indirect contact between the cathode and the LEs at the expense of increased impedance, it can reduce the impact of side reactions on the LNMO structure. The SEs are the key to the development of LIBs in the future, which can be mainly divided into Polymer solid electrolytes, [81] garnet solid electrolytes, [82] sulfide crystalline solid electrolytes [83] and glass solid electrolytes, [84] etc.. Liu et al [85] . adopted sulfobetaine zwitterions (ZI) and polyethylene oxide (PEO) to modify polysiloxanes, and the prepared SEs had a wide electrochemical window.…”

Section: Modification Methodsmentioning

confidence: 99%

“…In other words, the side reaction between the electrolyte and the electrode material is the main reason for the capacity degradation of LIBs [35] . The development of high‐performance SEs may be the most effective way to optimize the cyclability of LNMO cathodes, but so far, SEs is still difficult to meet with actual application requirements due to its fatal shortcoming, such as slow ion diffusion, severe polarization during the cycle, high interfacial impedance, and high raw material costs [81,141] . Especially, the cycle stability is not ideal in practical applications, so a series of problems caused by the high voltage performance of LNMO still need to be explored and resolved [40] …”

Section: Modification Methodsmentioning

confidence: 99%

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi_0.5Mn_1.5O₄

et al. 2021

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Lithium‐ion batteries (LIBs) are currently widely applied in many aspects of life, but with the development, the capacity of lithium‐ion batteries can no longer meet the needs. One of the dominant factors to restricting the capacity of LIBs is the cathode materials. Among the derivatives of spinel cathode LiMn2O4 (LMO), LiNi0.5Mn1.5O4 (LNMO) has become one of the research promising cathode materials in the current LIBs due to its high working voltage (4.7 V) and large theoretical specific capacity (147 mAh g−1). However, the short cycle life of LNMO during the electrochemical process limits its large‐scale commercial applications. Thus, it is necessary to summarize and discuss the recent development of LNMO. Through comparison with LiMn2O4, the structure, electrochemical properties of LNMO, influence of Mn on the performance of LNMO, and the capacity fading mechanism are analyzed and discussed in detail. We also summarize the modification methods of LNMO and the influence of preparation methods on the structure and performance of LNMO. Finally, some prospects of LNMO cathode are put forward. This Review article can provide helpful references for future design and construction of LNMO.

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“…Technological improvement in renewable energy demands high-performance energy storage devices that can perform under extreme weather conditions 219,220 . Recent work demonstrated a BNNS composite membrane separator for batteries that can withstand up to 150°C 221 .…”

Section: Bnns-polymer Nanocomposite Applicationsmentioning

confidence: 99%

2D boron nitride nanosheets for polymer composite materials

et al. 2021

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Hexagonal boron nitride nanosheets (BNNSs) are promising two-dimensional materials to boost the mechanical, thermal, electrical, and optical properties of polymer nanocomposites. Yet, BNNS-polymer composites face many challenges to meet the desired properties owing to agglomeration of BNNSs, incompatibility, and weak interactions of BNNSs with the host polymers. This work systematically reviews the fundamental parameters that control the molecular interactions of BNNSs with polymer matrices. The surface modification of BNNSs, as well as size, dispersion, and alignment of these nanosheets have a profound effect on polymer chain dynamics, mass barrier properties, and stress-transfer efficiency of the nanocomposites.

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Highly‐Cyclable Room‐Temperature Phosphorene Polymer Electrolyte Composites for Li Metal Batteries

Abstract: In spite of significant interest toward solid-state electrolytes owing to their superior safety in comparison to liquid-based electrolytes, sluggish ion diffusion and high interfacial resistance

Cited by 85 publications

References 99 publications

Direct Ink Writing of Polymer Composite Electrolytes with Enhanced Thermal Conductivities

Direct Ink Writing of Polymer Composite Electrolytes with Enhanced Thermal Conductivities

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi_0.5Mn_1.5O₄

2D boron nitride nanosheets for polymer composite materials

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Highly‐Cyclable Room‐Temperature Phosphorene Polymer Electrolyte Composites for Li Metal Batteries

Abstract: In spite of significant interest toward solid-state electrolytes owing to their superior safety in comparison to liquid-based electrolytes, sluggish ion diffusion and high interfacial resistance

Cited by 85 publications

References 99 publications

Direct Ink Writing of Polymer Composite Electrolytes with Enhanced Thermal Conductivities

Direct Ink Writing of Polymer Composite Electrolytes with Enhanced Thermal Conductivities

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi0.5Mn1.5O4

2D boron nitride nanosheets for polymer composite materials

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Product

Resources

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Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi_0.5Mn_1.5O₄