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Rational Design of a Laminated Dual-Polymer/Polymer–Ceramic Composite Electrolyte for High-Voltage All-Solid-State Lithium Batteries
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-02-19 , DOI: 10.1021/acsmaterialslett.9b00535 Xingwen Yu 1 , Jianyu Li 1 , Arumugam Manthiram 1
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-02-19 , DOI: 10.1021/acsmaterialslett.9b00535 Xingwen Yu 1 , Jianyu Li 1 , Arumugam Manthiram 1
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We present a multi-layer approach to design a laminated dual-polymer/polymer–ceramic composite electrolyte (LDPPCCE) for high-voltage all-solid-state lithium batteries. An anode friendly poly(ethylene oxide) (PEO) serves as a matrix to face the Li-metal anode. To enhance the room-temperature Li+-ion conductivity, succinonitrile (SN) is incorporated into the PEO. At the cathode side, an oxidation tolerant poly(acrylonitrile) (PAN) matrix is employed. To enhance the ionic conductivity and suppress lithium dendrite, NASICON-type lithium aluminum titanium phosphate (Li1+xAlxTi2–x(PO4)3, LATP) powder is integrated into the PAN. The PEO-SN dual-polymer and the PAN-LATP composite deliver matched ionic conductivity. Uniting the two electrolyte layers, the resulting elastic LDPPCCE exhibits an ionic conductivity of 1.31 × 10–4 S cm–1 at ambient temperature with an electrochemical stability window of 0–5 V. All-solid-state lithium cells, fabricated with the LDPPCCE electrolyte, high-capacity/high-voltage LiNi0.8Co0.1Mn0.1O2 cathode, and lithium–metal anode exhibit exceptional electrochemical performance with a long cycle life.
中文翻译：
高压全固态锂电池层压双聚合物/聚合物-陶瓷复合电解质的合理设计
我们提出了一种多层方法来设计用于高压全固态锂电池的层压双聚合物/聚合物-陶瓷复合电解质（LDPPCCE）。阳极友好型聚环氧乙烷（PEO）用作面对锂金属阳极的基质。为了提高室温Li +离子电导率，将琥珀腈（SN）掺入PEO中。在阴极侧，采用耐氧化的聚丙烯腈（PAN）基体。为了增强离子电导率并抑制枝晶锂，使用NASICON型磷酸锂铝钛（Li 1+ x Al x Ti 2– x（PO 4）3，LATP）粉末被集成到PAN中。PEO-SN双聚合物和PAN-LATP复合材料可提供匹配的离子电导率。将两个电解质层结合在一起，所得的弹性LDPPCCE在环境温度下的离子电导率为1.31×10 –4 S cm –1，电化学稳定性窗口为0–5V。用LDPPCCE制造的全固态锂电池电解质，高容量/高电压LiNi 0.8 Co 0.1 Mn 0.1 O 2阴极和锂金属阳极均具有出色的电化学性能，并且循环寿命长。
更新日期：2020-02-19
中文翻译：
高压全固态锂电池层压双聚合物/聚合物-陶瓷复合电解质的合理设计
我们提出了一种多层方法来设计用于高压全固态锂电池的层压双聚合物/聚合物-陶瓷复合电解质（LDPPCCE）。阳极友好型聚环氧乙烷（PEO）用作面对锂金属阳极的基质。为了提高室温Li +离子电导率，将琥珀腈（SN）掺入PEO中。在阴极侧，采用耐氧化的聚丙烯腈（PAN）基体。为了增强离子电导率并抑制枝晶锂，使用NASICON型磷酸锂铝钛（Li 1+ x Al x Ti 2– x（PO 4）3，LATP）粉末被集成到PAN中。PEO-SN双聚合物和PAN-LATP复合材料可提供匹配的离子电导率。将两个电解质层结合在一起，所得的弹性LDPPCCE在环境温度下的离子电导率为1.31×10 –4 S cm –1，电化学稳定性窗口为0–5V。用LDPPCCE制造的全固态锂电池电解质，高容量/高电压LiNi 0.8 Co 0.1 Mn 0.1 O 2阴极和锂金属阳极均具有出色的电化学性能，并且循环寿命长。
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