Antifreezing Zwitterionic Hydrogel Electrolyte with High Conductivity of 12.6 mS cm~(-1) at -40 °C through Hydrated Lithium Ion Hopping Migration

Yang Jianbo; Xu Zhen; Wang Jijun; Gai Ligang; Ji Xingxiang; Jiang Haihui; Liu Libin

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Antifreezing Zwitterionic Hydrogel Electrolyte with High Conductivity of 12.6 mS cm~(-1) at -40 °C through Hydrated Lithium Ion Hopping Migration

机译：通过水合锂离子跳跃迁移，在-40℃下进行12.6ms cm〜（-1）的高导电性的抗漂白水凝胶电解质

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Hydrogel electrolytes have high room-temperature conductivity and can be widely used in energy storage device. However, hydrogels suffer from the inevitable freezing of water at subzero temperatures, resulting in the diminishment of their conductivity and mechanical properties. How to achieve high conductivity without sacrificing hydrogels' flexibility at subzero temperature is an important challenge. To address this challenge, a new type of zwitterionic polymer hydrogel (polySH) electrolytes is fabricated. The anionic and cationic counterions on the polymer chains facilitate the dissociation of LiCl. The antifreezing electrolyte can be stretched to a strain of 325% and compressed to 75% at -40 degrees C and possesses an outstanding conductivity of 12.6 mS cm(-1) at -40 degrees C. A direct hopping migration mechanism of hydrated lithium-ion through the channel of zwitterion groups is proposed. The polySH electrolyte-based-supercapacitor (SC) exhibits a high specific capacitance of 178 mF cm(-2) at 60 degrees C and 134 mF cm(-2) at -30 degrees C with a retention of 81% and 71% of the initial capacitance after 10 000 cycles, respectively. The overall merits of the electrolyte will open up a new avenue for advanced ionic conductors and energy storage device in practical applications.

机译：水凝胶电解质具有高室温导电性，可广泛用于储能装置。然而，水凝胶在亚零温度下遭受不可避免的水，导致它们的电导率和机械性能的减小。如何在不牺牲水凝胶的强度在亚零温度的情况下实现高导电性是一个重要的挑战。为了解决这一挑战，制造了一种新型的两性离子聚合物水凝胶（Polysh）电解质。聚合物链上的阴离子和阳离子抗衡离子促进了LiCl的解离。防冻电解质可以拉伸至325％的菌株，并在-40℃下压缩至75％，并在-40℃下具有12.6ms cm（-1）的优异导电率。水合锂的直接跳跃迁移机制 - 提出了通过倍干组通道的离子。基于PolySh电解质的超级电容器（SC）在-30℃下在60℃和134mF cm（-2）的高比电容为-30℃，保留为81％和71％分别在10 000个周期后的初始电容。电解质的整体优点将在实际应用中为先进的离子导体和能量存储装置开辟新的途径。

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来源
《Advanced Functional Materials》 |2021年第18期|2009438.1-2009438.10|共10页
作者
Yang Jianbo; Xu Zhen; Wang Jijun; Gai Ligang; Ji Xingxiang; Jiang Haihui; Liu Libin;
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Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

Qilu Univ Technol Shandong Acad Sci State Key Lab Biobased Mat & Green Papermaking Sch Chem & Chem Engn Jinan 250353 Peoples R China;

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正文语种 eng
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antifreezing hydrogels; conductivity; electrolyte; supercapacitor; zwitterion;

机译：防冻水凝胶;电导率;电解质;超级电容器;两次;

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1. Zwitterionic Osmolyte-Based Hydrogels with Antifreezing Property, High Conductivity, and Stable Flexibility at Subzero Temperature [J] . Sui Xiaojie, Guo Hongshuang, Chen Pengguang, Advanced Functional Materials . 2020,第7期

机译：两性离子渗透剂基水凝胶，具有防冻性能，高电导率和在零以下温度下具有稳定的柔韧性
2. Zwitterionic Sulfobetaine Hydrogel Electrolyte Building Separated Positive/Negative Ion Migration Channels for Aqueous Zn-MnO_2 Batteries with Superior Rate Capabilities [J] . Mo Funian, Chen Ze, Liang Guojin, Advanced energy materials . 2021,第17期

机译：两性离子磺基因水凝胶电解质建设分离的Zn-MNO_2电池水溶性正/负离子迁移通道，具有优异的速率能力
3. Zwitterionic Sulfobetaine Hydrogel Electrolyte Building Separated Positive/Negative Ion Migration Channels for Aqueous Zn-MnO_2 Batteries with Superior Rate Capabilities [J] . Advanced energy materials . 2020,第16期

机译：两性离子磺基甜菜碱水凝胶电解质构建的具有高倍率能力的Zn-MnO_2水溶液分离的正/负离子迁移通道
4. The influence of chitosan concentration on morphology and conductivity of lithium aluminium titanate phosphate for solid electrolytes of lithium-ion battery application [C] . Arie Wibowo, Radian Febi Indrawan, Lia Amelia Tresna Wulan Asri Joint Conference on Chemistry . 2019

机译：壳聚糖浓度对锂离子电池固体电解质磷酸锂锂铝磷酸锂形态和电导率的影响
5. Enhancement of ionic conductivity of solid and gel polymer electrolytes by nanoconfinement of electrolyte materials in alumina interpenetrating networks for room temperature lithium ion nanobattery applications. [D] . Jayasekara, Indumini U. 2016

机译：在室温互穿的锂离子纳米电池应用中，通过氧化铝互穿网络中电解质材料的纳米约束，可以提高固体和凝胶聚合物电解质的离子电导率。
6. Submicron-Sized Nb-Doped Lithium Garnet for High Ionic Conductivity Solid Electrolyte and Performance of Quasi-Solid-State Lithium Battery [O] . Yan Ji, Cankai Zhou, Feng Lin, 2020

机译：高离子电导率固体电解质的亚微米级Nb掺杂锂石榴石和准固态锂电池的性能
7. Ionic Conductivity Diffusion Coefficients, and Degree of Dissociation in Lithium Electrolytes Ionic Liquids, and Hydrogel Polyelectrolytes [O] . -1

机译：离子电导率扩散系数，以及锂电解离离子液体中的解离，以及水凝胶聚电解质
8. Lithium ion dodensei kotai denkaishitsu no dodensei kojo kiko no kaimei. (Ionic conductivity enhancement for lithium solid electrolyte). [R] . Kobayashi, Y., Tabuchi, M. 1996

机译：锂离子dodensei kotai denkaishitsu no dodensei kojo kiko no kaimei。（锂固体电解质的离子传导性增强）。

Antifreezing Zwitterionic Hydrogel Electrolyte with High Conductivity of 12.6 mS cm~(-1) at -40 °C through Hydrated Lithium Ion Hopping Migration

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