Binder-induced ultrafast PF6−-intercalation toward a high-voltage, high-power and long-cycling zinc–graphite dual-ion battery

Li, Gen; Shi, Xiao-Jun; Dong, Ting; Yu, Qian; Mao, Zhi-Fei; Liu, Xin-Hua; Wang, Rui; He, Bei-Bei; Jin, Jun; Gong, Yan-Sheng; Wang, Huan-Wen

doi:10.1007/s12598-024-02804-8

Rare Met.

2024

DOI: 10.1007/s12598-024-02804-8

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Binder-induced ultrafast PF6−-intercalation toward a high-voltage, high-power and long-cycling zinc–graphite dual-ion battery

Gen Li,

Xiao-Jun Shi,

Ting Dong

et al.

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Strengthened High-Concentration Quasi-Solid Electrolytes for Lithium Metal with Ultralong Stable Cyclability

Hu,

Zhang,

Shi

et al. 2024

ACS Nano

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The lithium metal batteries coupled with nickel-rich Li-Ni x Co y Mn 1−x−y O 2 (x > 0.7) cathodes hold promise for surpassing the current energy density limit of lithium-ion batteries. However, conventional electrolytes containing free active solvents are highly susceptible to decomposition, particularly at the interfaces of lithium anode and high-voltage cathode. Herein, we have developed a composite quasi-solid electrolyte (CQSE) utilizing sulfated Al 2 O 3 (S-Al 2 O 3 )-bridged cellulose triacetate (CTA) to stabilize the interfaces between the electrolyte and electrodes. S-Al 2 O 3 competitively dissociates Li + through coordination interactions with anions, facilitating the formation of a distinctive solvation structure characterized by prevalent ion pairs and aggregates. In addition, coordination of S-Al 2 O 3 with CTA forms S-Al 2 O 3 -bridged CTA molecular chain networks, enhancing the mechanical strength of the CQSE and immobilizing free liquid molecules. Consequently, the CQSE demonstrates an enhanced tensile strength of up to 7.4 MPa and a high ionic conductivity of 1.8 × 10 −3 S cm −1 at room temperature. Furthermore, the CQSE not only suppresses electrode−electrolyte side reactions but also enables the formation of an inorganic-rich solid/cathode electrolyte interphase. As a result, the Li|CQSE|LiNi 0.83 Co 0.11 Mn 0.06 O 2 (NCM83) batteries retain 84% capacity after 1000 cycles at 1 C, with the pouch cells demonstrating 80% capacity retention after 250 cycles at 0.5 C.

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Strengthened High-Concentration Quasi-Solid Electrolytes for Lithium Metal with Ultralong Stable Cyclability

Hu,

Zhang,

Shi

et al. 2024

ACS Nano

View full text Add to dashboard Cite

show abstract

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Binder-induced ultrafast PF6−-intercalation toward a high-voltage, high-power and long-cycling zinc–graphite dual-ion battery

Cited by 1 publication

References 71 publications

Strengthened High-Concentration Quasi-Solid Electrolytes for Lithium Metal with Ultralong Stable Cyclability

Strengthened High-Concentration Quasi-Solid Electrolytes for Lithium Metal with Ultralong Stable Cyclability

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