Salty Ice Electrolyte with Superior Ionic Conductivity Towards Low-Temperature Aqueous Zinc Ion Hybrid Capacitors

Sun Yinglun; Ma Hongyun; Zhang Xiaqing; Liu Bao; Liu Lingyang; Zhang Xu; Feng Jianze; Zhang Qingnuan; Ding Yunxia; Yang Bingjun; Qu Liangti; Yan Xingbin

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Salty Ice Electrolyte with Superior Ionic Conductivity Towards Low-Temperature Aqueous Zinc Ion Hybrid Capacitors

机译：咸冰电解质具有优异的离子电导率朝向低温锌离子混合电容器

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Aqueous electrochemical energy storage (EES) devices have attracted considerable attention due to their advantages of low cost and high safety. However, the freeze of aqueous electrolytes usually causes the dramatic loss of ionic conduction capacity, thereby seriously restricting the low-temperature application of such EES devices. Herein, different from traditional frozen electrolytes, a Zn(ClO4)(2) salty ice with superior ionic conductivity (1.3 x 10(-3) S cm(-1) even at -60 degrees C) is discovered. It is attributed to the unique 3D ionic transport channels inside such ice, which enables the fast transport of both Zn2+ ions and ClO4- ions inside the ice at low temperatures. Using this Zn(ClO4)(2) salty ice as an electrolyte, as-built zinc ion hybrid capacitor is able to work even at -60 degrees C (with 74.2% of the room temperature capacity), and exhibits an ultra-long cycle life of 70 000 cycles at low temperature. This discovery provides a new insight for constructing low-temperature EES devices using salty ices as electrolytes.

机译：电化学储能（EES）器件由于其成本低，安全性低的优点而引起了相当大的关注。然而，水性电解质的冻结通常会导致离子传导能力的显着丧失，从而严重限制了这种EES器件的低温施加。在本文中，不同于传统的冷冻电解质，Zn（ClO4）（2）含咸的冰具有优异的离子电导率（1.3×10（-3）Cm（-1）即使在-60℃））也是如此。它归因于这种冰层的独特的3D离子传输通道，其能够在低温下快速地在冰中涂层内的Zn2 +离子和ClO 4。使用该Zn（CLO4）（2）咸冰作为电解质，即使在-60℃（室温容量的74.2％）下也能够使用锌离子混合电容器，并且具有超长循环在低温下寿命为70 000周期。该发现提供了一种新的洞察力，用于使用咸冰块作为电解质构建低温EES器件。

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来源
《Advanced Functional Materials》 |2021年第28期|2101277.1-2101277.10|共10页
作者
Sun Yinglun; Ma Hongyun; Zhang Xiaqing; Liu Bao; Liu Lingyang; Zhang Xu; Feng Jianze; Zhang Qingnuan; Ding Yunxia; Yang Bingjun; Qu Liangti; Yan Xingbin;
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Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lab Clean Energy Chem & Mat Lanzhou 730000 Peoples R China|Sun Yat Sen Univ Sch Mat Sci & Engn State Key Lab Optoelect Mat & Technol Guangzhou 510275 Peoples R China|Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China;

Tsinghua Univ Dept Chem Beijing 100084 Peoples R China;

Lanzhou Univ Sch Phys Sci & Technol Lanzhou 730000 Peoples R China;

Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lab Clean Energy Chem & Mat Lanzhou 730000 Peoples R China|Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China;

Liaocheng Univ Sch Chem & Chem Engn Shandong Prov Key Lab Chem Energy Storage & Novel Liaocheng 252059 Shandong Peoples R China;

Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lab Clean Energy Chem & Mat Lanzhou 730000 Peoples R China;

Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lab Clean Energy Chem & Mat Lanzhou 730000 Peoples R China|Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China;

Beijing Inst Technol Sch Chem & Chem Engn Beijing Key Lab Photoelect Electrophoton Convers Key Lab Cluster Sci Minist Educ Beijing 100081 Peoples R China;

Lanzhou Univ Sch Phys Sci & Technol Lanzhou 730000 Peoples R China;

Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lab Clean Energy Chem & Mat Lanzhou 730000 Peoples R China;

Tsinghua Univ Dept Chem Beijing 100084 Peoples R China;

Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lab Clean Energy Chem & Mat Lanzhou 730000 Peoples R China|Sun Yat Sen Univ Sch Mat Sci & Engn State Key Lab Optoelect Mat & Technol Guangzhou 510275 Peoples R China|Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China;

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aqueous electrolyte; low temperature; salty ice; zinc ion hybrid capacitor; zinc perchlorate;

机译：水电解质;低温;咸冰;锌离子混合电容;高氯酸锌;

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2. An aqueous hybrid electrolyte for low-temperature zinc-based energy storage devices [J] . Chang Nana, Li Tianyu, Li Rui, Energy & environmental science . 2020,第10期

机译：用于低温锌的储能装置的含水混合电解质
3. A battery-supercapacitor hybrid device composed of metallic zinc, a biodegradable ionic liquid electrolyte and graphite [J] . Liu Zhen, Li Guozhu, Cui Tong, Journal of solid state electrochemistry . 2018,第1期

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4. Ionic Transport in Non-Aqueous Electrolyte Solutions -(i) Experimental Measurements of Conductivity and Viscosity of MgX_2 (X=ClO_4~-, TFSA~-) Dissolved in PC and GBL [C] . Hikaru Sano, Satoshi Uchida, Hiroyuki Ozaki, Pacific Rim Meeting on Electrochemical and Solid-State Science . 2020

机译：非水电解质溶液中的离子转运 - （i）MgX_2（x = ClO_4〜 - ，TFSA〜 - ）导电性和粘度的实验测量（x = ClO_4〜 - ）溶解在PC和GBL中
5. Ionic Liquids and Electrochemical Double-Layer Capacitors: A Study of Electrolyte Structure and Capacitor Performance. [D] . Fox, Eric Townsend. 2012

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6. An aqueous electrolyte of the widest potential window and its superior capability for capacitors [O] . Hiroshi Tomiyasu, Hirokazu Shikata, Koichiro Takao, -1

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7. Ionic conductivity of nonflammable ternary electrolyte consisting of ionic liquid and fluorinated alkylphosphate for advanced electrochemical capacitors [O] . Morita, Masayuki, Asano, Taisuke, Egashira, Minato, 2013

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Salty Ice Electrolyte with Superior Ionic Conductivity Towards Low-Temperature Aqueous Zinc Ion Hybrid Capacitors

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