Self-Assembling Films of Covalent Organic Frameworks Enable Long-Term, Efficient Cycling of Zinc-Ion Batteries

Park Jun Heuk; Kwak Myung-Jun; Hwang Chihyun; Kang Kyeong-Nam; Liu Nian; Jang Ji-Hyun; Grzybowski Bartosz A.

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Self-Assembling Films of Covalent Organic Frameworks Enable Long-Term, Efficient Cycling of Zinc-Ion Batteries

机译：共价有机框架的自组装电影使锌离子电池的长期高效循环

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Despite their safety, nontoxicity, and cost-effectiveness, zinc aqueous batteries still suffer from limited rechargeability and poor cycle life, largely due to spontaneous surface corrosion and formation of large Zn dendrites by irregular and uneven plating and stripping. In this work, these untoward effects are minimized by covering Zn electrodes with ultrathin layers of covalent organic frameworks, COFs. These nanoporous and mechanically flexible films form by self-assembly-via the straightforward and scalable dip-coating technique-and permit efficient mass and charge transport while suppressing surface corrosion and growth of large Zn dendrites. The batteries demonstrated have excellent capacity retention and stable polarization voltage for over 420 h of cycling at 1 mA cm(-2). The COF films essential for these improvements can be readily deposited over large areas and curvilinear supports, enabling, for example, foldable wire-type batteries.

机译：尽管他们的安全性，无毒性和成本效益，锌含水电池仍然受到限制的可充电性和循环寿命，主要是由于通过不规则和不均匀的电镀和剥离的自发表面腐蚀和形成大Zn树突的形成。在这项工作中，通过使用共价有机框架的超薄层，COF覆盖Zn电极来最小化这些不管效应。这些纳米多孔和机械柔性薄膜通过自组装 - 通过直接和可伸缩的浸涂技术 - 并且允许有效的质量和电荷运输，同时抑制大Zn树枝状的表面腐蚀和生长。在1 mA cm（-2）时，电池显示出优异的容量保持和稳定的偏振电压，循环超过420小时（-2）。对于这些改进的COF薄膜可以容易地沉积在大区域和曲线支撑件上，使例如可折叠的线型电池。

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《Advanced Materials》 |2021年第34期|2101726.1-2101726.9|共9页
作者
Park Jun Heuk; Kwak Myung-Jun; Hwang Chihyun; Kang Kyeong-Nam; Liu Nian; Jang Ji-Hyun; Grzybowski Bartosz A.;
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Inst Basic Sci Ctr Soft & Living Matter UNIST Gil 50 Ulsan 44919 South Korea|Ulsan Natl Inst Sci & Technol UNIST Dept Chem UNIST Gil 50 Ulsan 44919 South Korea;

Ulsan Natl Inst Sci & Technol UNIST Sch Energy & Chem Engn UNIST Gil 50 Ulsan 44919 South Korea;

Ulsan Natl Inst Sci & Technol UNIST Sch Energy & Chem Engn UNIST Gil 50 Ulsan 44919 South Korea|Georgia Inst Technol Sch Chem & Biomol Engn Atlanta GA 30332 USA;

Ulsan Natl Inst Sci & Technol UNIST Sch Energy & Chem Engn UNIST Gil 50 Ulsan 44919 South Korea;

Georgia Inst Technol Sch Chem & Biomol Engn Atlanta GA 30332 USA;

Ulsan Natl Inst Sci & Technol UNIST Sch Energy & Chem Engn UNIST Gil 50 Ulsan 44919 South Korea;

Inst Basic Sci Ctr Soft & Living Matter UNIST Gil 50 Ulsan 44919 South Korea|Ulsan Natl Inst Sci & Technol UNIST Dept Chem UNIST Gil 50 Ulsan 44919 South Korea;

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正文语种 eng
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batteries; covalent organic frameworks; dendrites; zinc;

机译：电池;共价有机框架;树突;锌;

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1. Two p-Conjugated Covalent Organic Frameworks with Long-Term Cyclability at High Current Density for Lithium Ion Battery [J] . Heng Chen, Yadi Zhang, Chengyang Xu, Chemistry: A European journal . 2019,第68期

机译：两个P缀合的共价有机框架，具有高电流密度的长期可自由性，用于锂离子电池的高电流密度
2. Mass-Producible, Quasi-Zero-Strain, Lattice-Water-Rich Inorganic Open-Frameworks for Ultrafast-Charging and Long-Cycling Zinc-Ion Batteries [J] . Yang Xin, Deng Wenzhuo, Chen Ming, Advanced Materials . 2020,第45期

机译：批量生产，准零菌株，富含果实的无机开放式框架，用于超速充电和长循环锌离子电池
3. Mn2O3/Al2O3 cathode material derived from a metal-organic framework with enhanced cycling performance for aqueous zinc-ion batteries [J] . Dalton transactions: An international journal of inorganic chemistry . 2020,第3期

机译：Mn2O3 / Al2O3阴极材料，来自金属 - 有机框架，具有增强的锌离子电池的循环性能
4. REDOX-ACTIVE 2D COVALENT ORGANIC FRAMEWORK FILMS [C] . Catherine R. DeBlase, Kenneth Hernandez-Burgos, Katharine E. Silberstein ACS National Meeting Exhibition . 2016

机译：氧化还原活性2D共价有机框架薄膜
5. Metal-Organic Framework Additive in Electrolyte for Rechargeable Zinc-Ion Battery [D] . An, Bowen. 2021

机译：可充电锌离子电池电解液中的金属 - 有机框架添加剂
6. Oriented Thin Films of a Benzodithiophene Covalent Organic Framework [O] . Dana D. Medina, Veronika Werner, Florian Auras, -1

机译：苯并二噻吩共价有机骨架的取向薄膜
7. Acid Exfoliation of Imine‐linked Covalent Organic Frameworks Enables Solution Processing into Crystalline Thin Films [O] . David W. Burke, Chao Sun, Ioannina Castano, 2020

机译：亚胺连接的共价有机骨架的酸剥离使溶液加工能够进入结晶薄膜

Self-Assembling Films of Covalent Organic Frameworks Enable Long-Term, Efficient Cycling of Zinc-Ion Batteries

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