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基于全同源策略构建低界面阻抗的柔性固态锂离子电池

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Science China Materials 2024年第5期67卷 1445-1454页

作者：邹俊龙张珺王琳琳孙琪玥王泳茵郑明涛胡航肖勇刘应亮梁业如 Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou510642China Maoming Branch Guangdong Laboratory of Lingnan Modern AgricultureMaoming525000China

固态锂离子电池被认为是可穿戴电子设备的理想储能器件.然而,高的电极/电解质界面阻抗仍是该领域一个严峻的挑战,尤其在弯曲变形条件下.本文提出全同源策略,利用热塑性聚氨酯作为固态电解质和电极的离子导电框架,构建具有低界面阻抗的... 详细信息

固态锂离子电池被认为是可穿戴电子设备的理想储能器件.然而,高的电极/电解质界面阻抗仍是该领域一个严峻的挑战,尤其在弯曲变形条件下.本文提出全同源策略,利用热塑性聚氨酯作为固态电解质和电极的离子导电框架,构建具有低界面阻抗的柔性固态锂离子电池.实验结果表明,聚氨酯中-C=O、-NH和-C-O-C-等功能基团有助于锂离子传输.利用该特性,制备出具有高柔韧性和离子电导率的聚氨酯基固态电解质,以及具有优异柔韧性的复合电极,其即使在不同形变下仍能保持良好的电化学性能.在此基础上,成功组装了全同源的柔性固态锂离子电池,其表现出更低的界面阻抗和更优异的电化学性能.这种全同源策略为柔性固态电池的设计提供了一种新思路.

关键词： lithium-ion batteries all-from-one structure design polymer solid-state electrolyte flexible free-standing electrode low interfacial resistance

A fast ionic transport copolymeric network for stable quasi-solid lithium metal battery

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Journal of Energy Chemistry 2023年第12期87卷 491-500,I0013页

作者： Weiqi Mai Qiaoying Cao Mingtao Zheng Yong Xiao Hang Hu Yingliang Liu yeru liang Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina Maoming Branch Guangdong Laboratory of Lingnan Modern AgricultureMaoming 525000GuangdongChina

Solid-state lithium(Li) metal batteries overwhelm the lithium-ion batteries by harvesting high energy from Li metal anode with ultrahigh capacities and gaining excellent safety from solid ***,the uncontrollable solvents in solid electrolytes usually aggravate poor interfacial contact with lithium metal anode and deteriorate Li^(+) *** a copolymeric network-structured ion conductor by rationally integrating cellulose nanofibril as a two-in-one functional material is employed to anchor the *** advantages of tightly anchoring of cellulose nanofibril to solvent,the asconstructed quasi-solid polymer-based electrolyte offers rapid Li^(+) transport channels and realizes effective Li-dendrite suppression,which enables high ionic conductivity of 1.93 × 10^(-3)S cm^(-1) at room temperature,long-term Li plating/stripping over 1900 h,and high capacity retention of 99%.This work provides a fresh strategy for creating solid electrolytes that meet both high ionic conductivity and interfacial stability requirements for practical solid-state lithium metal battery.

关键词： Lithium metal battery Quasi-solid polymer electrolyte Cellulose nanofibrils Solvent anchoring Copolymeric network

Integrated lithium metal anode protected by composite solid electrolyte film enables stable quasi-solid-state lithium metal batteries

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Chinese Chemical Letters 2020年第9期31卷 2339-2342页

作者： Junfan Ding Rui Xu Chong Yan Ye Xiao yeru liang Hong Yuan Jiaqi Huang School of Materials Science&Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China College of Materials and Energy South China Agricultural UniversityGuangzhou 510642China

Lithium(Li) metal,possessing an extremely high theoretical specific capacity(3860 mAh/g) and the most negative electrode potential(-3.040 V *** hydrogen electrode),is one the most favorable anode materials for future high-energy-density ***,the poor cyclability and safety issues induced by extremely unstable interfaces of traditional liquid Li metal batteries have limited their practical ***,a quasi-solid battery is constructed to offer superior interfacial stability as well as excellent interfacial contact by the incorporation of Li@composite solid electrolyte integrated electrode and a limited amount of liquid electrolyte(7.5 μL/cm2).By combining the inorganic garnet Aldoped Li6.75La3Zr1.75Ta0.25O12(LLZO) with high mechanical strength and ionic conductivity and the o rganic ethylene-vinyl acetate copolymer(EVA) with good flexibility,the composite solid electrolyte film could provide sufficient ion channels,sustained interfacial contact and good mechanical stability at the anode side,which significantly alleviates the thermodynamic corrosion and safety problems induced by liquid *** innovative and facile quasi-solid strategy is aimed to promote the intrinsic safety and stability of working Li metal anode,shedding light on the development of next-generation highperformance Li metal batteries.

关键词： Lithium metal anodes Composite electrolyte Quasi-solid-state batteries Lithium dendrites Lean electrolyte

A bifunctional ethylene-vinyl acetate copolymer protective layer for dendrites-free lithium metal anodes

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Journal of Energy Chemistry 2020年第9期29卷 203-207,I0006页

作者： yeru liang Ye Xiao Chong Yan Rui Xu Jun-Fan Ding Ji liang Hong-Jie Peng Hong Yuan Jia-Qi Huang College of Materials and Energy South China Agricultural UniversityGuangzhou 510642GuangdongChina School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Institute for Superconducting&Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNorth WollongongNSW 2500Australia Department of Chemical Engineering Stanford UniversityStanfordCalifornia94305United States

Lithium metal batteries are strongly considered as one of the most promising candidates for nextgeneration high-performance battery ***,the uncontrollable growth of lithium dendrites and the highly reactive lithium metal result in the severe safety risks and the short lifespan for highenergy-density rechargeable ***,we demonstrate a hydrophobic and ionically conductive ethylene-vinyl acetate(EVA)copolymer layer can not only endow lithium metal anodes with an air-stable and anti-water surface,but also efficiently suppress the lithium-dendrites growth during the electrochemical cycling ***,the introduction of the EVA copolymer as a bifunctional protection layer simultaneously improves the anti-water/air performance and electrochemical cycling stability of lithium metal anode.

关键词： Lithium metal anode Dendrites-free Solid electrolyte interphase(SEI) Bifunctional copolymer layer Air-stable and anti-water

Unveiling the role of lithiophilic sites denseness in regulating lithium ion deposition

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Journal of Energy Chemistry 2022年第8期31卷 324-332,I0009页

作者： Tianlai Wu Yongyin Wang Weicai Zhang Kaixin Lu Jieyin Tan Mingtao Zheng Yong Xiao Yingliang Liu yeru liang Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina Guangdong Laboratory of Lingnan Modern Agriculture Guangzhou 510642GuangdongChina

The construction of lithiophilic sites is an effective way to achieve uniform lithium(Li)ion deposition for stably cycling Li metal ***,in-depth investigations involving lithiophilic sites denseness(LSD)in impacting Li ion deposition remain *** we propose an insight into this issue by probing the effect of LSD on determining the Li ion *** characterization and theoretical simulation demonstrate that rational LSD plays a vital role in both Li nucleation and the subsequent Li ion plating *** tailoring the LSD from low to high,the accompanied Li nucleation overpotentials continuously ***,the Li ion mobility increases first and then weakens in the subsequent Li ion plating ***,the Li metal with a moderate LSD allows a dendritefree morphology and satisfactory long-term cycling *** work affords a deeper fundamental understanding of lithiophilic chemistry that directs the development of efficient strategies to realize dendrite-free Li metal batteries.

关键词： Li metal batteries Lithiophilic sites denseness Li nucleation Li ion plating behaviour Li dendrite inhibition

Synthesis of novel hierarchical porous polymers with a nanowire-interconnected network structure from core-shell polymer nanoobjects

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Science China Chemistry 2017年第8期60卷 1084-1089页

作者： yeru liang yingbo ruan junlong huang bo peng chen-yang liu ruowen fu mingqiu zhang yongming chen dingcai wu Materials Science Institute Key Laboratory for Polymeric Composite ＆ Functional Material of Ministry of Education Guangdong Provincial Key Laboratory for High Performance Polymeric Composites School of Chemistry Sun Yat-sen University Guangzhou 510275 China aCAS Key Laboratory of Engineering Plasties Institute of Chemistry Chinese Academy of Sciences Be!jing 100190 China School of Materials Science and Engineering Sun Yat-sen University Guangzhou 510275 China

Design and fabrication of the micro/nanostructures of the network units is a critical issue for porous nanonetwork structured materials. Significant progress has been attained in construction of the network units with zero-dimensional spherical ***, owing to the limitations of synthetic methods, construction of porous building blocks in one dimension featuring high aspect ratios for porous nanonetwork structured polymer(PNSP) remains largely unexplored. Here we present the successful design and preparation of PNSP with a novel type of one-dimensional network unit, i.e., microporous heterogeneous nanowire. Well-defined core-shell polymer nanoobjects prepared from a gelable block copolymer, poly(3-(triethoxysilyl)propyl methacrylate)-block-polystyrene are employed as building blocks, and facilely transformed into PNSP via hypercrosslinking of polystyrene shell. The as-prepared PNSP exhibits unique three-dimensional hierarchical nanonetwork morphologies with large surface area. These findings could provide a new avenue for fabrication of unique well-defined PNSP, and thus generate valuable breakthroughs in many applications.

关键词： hierarchical porous polymer nanonetwork structure one-dimensional network unit hypercrosslinking microporous heterogeneous nanowire

Waterproof lithium metal anode enabled by cross-linking encapsulation

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Science Bulletin 2020年第11期65卷 909-916,M0003,M0004页

作者： Ye Xiao Rui Xu Chong Yan yeru liang Jun-Fan Ding Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China College of Materials and Energy South China Agricultural UniversityGuangzhou 510642China

Lithium (Li) metal is considered as the ultimate anode choice for developing next-generation high-energy batteries. However, the poor tolerance against moist air and the unstable solid electrolyte interphases (SEI) induced by the intrinsic high reactivity of lithium bring series of obstacles such as the rigorous operating condition, the poor electrochemical performance, and safety anxiety of the cell, which to a large extent hinder the commercial utilization of Li metal anode. Here, an effective encapsulation strategy was reported via a facile drop-casting and a following heat-assisted cross-linking process. Benefiting from the inherent hydrophobicity and the compact micro-structure of the cross-linked poly(vinylidene-co-hex afluoropropylene) (PVDF–HFP), the as-encapsulated Li metal exhibited prominent stability toward moisture, as well corroborated by the evaluations both under the humid air at 25 °C with 30% relative humidity (RH) and pure water. Moreover, the encapsulated Li metal anode exhibits a decent electrochemical performance without substantially increasing the cell polarization due to the uniform and unblocked ion channels, which originally comes from the superior affinity of the PVDF–HFP polymer toward nonaqueous electrolyte. This work demonstrates a novel and valid encapsulation strategy for humiditysensitive alkali metal electrodes, aiming to pave the way for the large-scale and low-cost deployment of the alkali metal-based high-energy-density batteries.

关键词： Lithium metal anode Polymer encapsulation Interfacial protection Water-stable Air-stable Cross-linking

Architecture engineering of carbonaceous anodes for high-rate potassium-ion batteries

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Carbon Energy 2021年第4期3卷 554-581页

作者： Tianlai Wu Weicai Zhang Jiaying Yang Qiongqiong Lu Jing Peng Mingtao Zheng Fei Xu Yingliang Liu yeru liang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Provincial Engineering Technology Research Center for Optical AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhouChina Guangdong Laboratory of Lingnan Modern Agriculture GuangzhouChina State Key Laboratory of Solidication Processing School of Materials Science and EngineeringCenter for Nano Energy MaterialsNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi'anChina Leibniz Institute for Solid State and Materials Research(IFW)Dresden e.V. DresdenGermany

The limited lithium resource in earth's crust has stimulated the pursuit of alternative energy storage technologies to lithium-ion ***-ion batteries(KIBs)are regarded as a kind of promising candidate for large-scale energy storage owing to the high abundance and low cost of potassium ***,further development and wide application of KIBs are still challenged by several obstacles,one of which is their fast capacity deterioration at high rates.A considerable amount of effort has recently been devoted to address this problem by developing advanced carbonaceous anode materials with diverse structures and *** review presents and highlights how the architecture engineering of carbonaceous anode materials gives rise to high-rate performances for KIBs,and also the beneficial conceptions are consciously extracted from the recent ***,basic insights into the recent engineering strategies,structural innovation,and the related advances of carbonaceous anodes for high-rate KIBs are under specific *** on the achievements attained so far,a perspective on the foregoing,and proposed possible directions,and avenues for designing high-rate anodes,are presented finally.

关键词： carbonaceous anodes electronic conductivity high-rate performance ion diffusivity potassiumion batteries

A review of rechargeable batteries for portable electronic devices

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InfoMat 2019年第1期1卷 6-32页

作者： yeru liang Chen-Zi Zhao Hong Yuan Yuan Chen Weicai Zhang Jia-Qi Huang Dingshan Yu Yingliang Liu Maria-Magdalena Titirici Yu-Lun Chueh Haijun Yu Qiang Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingChina College of Materials and Energy South China Agricultural UniversityGuangzhouChina School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South WalesAustralia Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijingChina Key Laboratory for Polymeric Composite and Functional Materials Ministry of EducationSchool of ChemistrySun Yat-sen UniversityGuangzhouChina School of Engineering and Materials Science Queen Mary University of LondonLondonUnited Kingdom Department of Materials Science and Engineering National Tsing Hua UniversityHsinchuTaiwanROC College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsMinistry of EducationBeijing University of TechnologyBeijingChina

Portable electronic devices(PEDs)are promising information-exchange platforms for real-time *** performance is becoming more and more sensitive to energy *** batteries are the primary energy source of PEDs and hold the key to guarantee their desired performance *** the remarkable progress in battery technologies,multifunctional PEDs have constantly been emerging to meet the requests of our daily life *** ongoing surge in demand for high-performance PEDs inspires the relentless pursuit of even more powerful rechargeable battery systems in *** this review,we present how battery technologies contribute to the fast rise of PEDs in the last ***,a comprehensive overview of historical advances in PEDs is ***,four types of representative rechargeable batteries and their impacts on the practical development of PEDs are described *** development trends toward a new generation of batteries and the future research focuses are also presented.

关键词： electrochemical energy storage information material portable electronic device rechargeable battery