Journal ArticleDOI
Copper-coordinated cellulose ion conductors for solid-state batteries.
Chunpeng Yang,Qisheng Wu,Wei-Qi Xie,Xin Zhang,Alexandra H. Brozena,Jin Zheng,Mounesha N. Garaga,Byung Hee Ko,Yimin Mao,Yimin Mao,Shuaiming He,Yue Gao,Pengbo Wang,Madhusudan Tyagi,Madhusudan Tyagi,Feng Jiao,Robert M. Briber,Paul Albertus,Chunsheng Wang,Steven Greenbaum,Yan-Yan Hu,Akira Isogai,Martin Winter,Kang Xu,Yue Qi,Liangbing Hu +25 more
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TLDR
In this article, the authors proposed a method for achieving high performance solid polymer ion conductors by engineering of molecular channels, which enables fast transport of Li+ ions along the polymer chains.Abstract:
Although solid-state lithium (Li)-metal batteries promise both high energy density and safety, existing solid ion conductors fail to satisfy the rigorous requirements of battery operations. Inorganic ion conductors allow fast ion transport, but their rigid and brittle nature prevents good interfacial contact with electrodes. Conversely, polymer ion conductors that are Li-metal-stable usually provide better interfacial compatibility and mechanical tolerance, but typically suffer from inferior ionic conductivity owing to the coupling of the ion transport with the motion of the polymer chains1–3. Here we report a general strategy for achieving high-performance solid polymer ion conductors by engineering of molecular channels. Through the coordination of copper ions (Cu2+) with one-dimensional cellulose nanofibrils, we show that the opening of molecular channels within the normally ion-insulating cellulose enables rapid transport of Li+ ions along the polymer chains. In addition to high Li+ conductivity (1.5 × 10−3 siemens per centimetre at room temperature along the molecular chain direction), the Cu2+-coordinated cellulose ion conductor also exhibits a high transference number (0.78, compared with 0.2–0.5 in other polymers2) and a wide window of electrochemical stability (0–4.5 volts) that can accommodate both the Li-metal anode and high-voltage cathodes. This one-dimensional ion conductor also allows ion percolation in thick LiFePO4 solid-state cathodes for application in batteries with a high energy density. Furthermore, we have verified the universality of this molecular-channel engineering approach with other polymers and cations, achieving similarly high conductivities, with implications that could go beyond safe, high-performance solid-state batteries. By coordinating copper ions with the oxygen-containing groups of cellulose nanofibrils, the molecular spacing in the nanofibrils is increased, allowing fast transport of lithium ions and offering hopes for solid-state batteries.read more
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Freestanding Metal–Organic Frameworks and Their Derivatives: An Emerging Platform for Electrochemical Energy Storage and Conversion
Bing He,Qichong Zhang,Zhen-Zhen Pan,Lei Li,Chaowei Li,Ying Ling,Zhixun Wang,Mengxiao Chen,Zhe Wang,Yagang Yao,Qingwen Li,Litao Sun,John Wang,Lei Wei +13 more
TL;DR: In this article , the authors provide a comprehensive overview on the structural features and fabrication techniques of freestanding metal-organic frameworks (MOF-based/derived electrodes) for electrochemical energy storage and conversion.
Journal ArticleDOI
Designing better electrolytes
TL;DR: A review of electrolyte design for battery interphases can be found in this article , where Meng et al. discuss progress in designing better electrolytes for electrochemical devices and how to tailor them using electrolyte engineering.
Journal ArticleDOI
Current international research into cellulose as a functional nanomaterial for advanced applications
Stephen J. Eichhorn,Anita Etale,Ji Wang,Linn Berglund,Y. J. Li,Y. Cai,C. H. Chen,Emily D. Cranston,Marcus A. Johns,Zheman Fang,G Li,L. Hu,Mudrika Khandelwal,K. Lee,Kristiina Oksman,Supree Pinitsoontorn,Franck Quero,Anila Sebastian,Maria-Magdalena Titirici,Z F Xu,Silvia Vignolini,Bruno Frka-Petesic +21 more
TL;DR: A recent overview of cellulose nanomaterials can be found in this article , where the focus is placed on fundamental and applied research that is being undertaken to generate applications, which are now becoming a real prospect given the developments in the field over the last 20 years.
Journal ArticleDOI
Foldable Solid‐State Batteries Enabled by Electrolyte Mediation in Covalent Organic Frameworks
Dong Guo,Digambar Balaji Shinde,Woo Jeong Shin,Edy Abou-Hamad,Abdul-Hamid M. Emwas,Zhiping Lai,Arumugam Manthiram +6 more
TL;DR: In this article , an electrolyte-mediated single-Li+conductive covalent organic framework (COF) is presented, which represents a new category of quality solid-state Li+ conductors.
Journal ArticleDOI
Hierarchical Porous Cellulosic Triboelectric Materials for Extreme Environmental Conditions
Jiamin Zhao,Wanglin Zhang,Tao Liu,Yanhua Liu,Ying Qin,Jilong Mo,Chenchen Cai,Song Zhang,Shuangxi Nie +8 more
TL;DR: Inspired by natural bamboo, the authors reported a three-step strategy for the large-scale production of triboelectric materials with special nanostructures from natural bamboo and achieved short-circuit current of 2.9 µA and output power of 1.1 W m 2 at a working area of only 1 cm2.
References
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TL;DR: In this paper, a method is described to realize coupling to an external bath with constant temperature or pressure with adjustable time constants for the coupling, which can be easily extendable to other variables and to gradients, and can be applied also to polyatomic molecules involving internal constraints.
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Toward reliable density functional methods without adjustable parameters: The PBE0 model
Carlo Adamo,Vincenzo Barone +1 more
TL;DR: In this paper, an analysis of the performances of a parameter free density functional model (PBE0) obtained combining the so-called PBE generalized gradient functional with a predefined amount of exact exchange is presented.
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Bruce Ravel,Matthew Newville +1 more
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Journal ArticleDOI
A molecular dynamics method for simulations in the canonical ensemble
TL;DR: In this paper, a molecular dynamics simulation method which can generate configurations belonging to the canonical (T, V, N) ensemble or the constant temperature constant pressure ensemble was proposed, which is tested for an atomic fluid (Ar) and works well.