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Rational design and synthesis of nanosheets self-assembled hierarchical flower-ball-like CuFeS_(2)for boosted wide temperature sodium-ion batteries

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Nano Research 2023年第7期16卷 9407-9415页

作者： Ge Sun Hezhe Lin Ruiyuan Tian Zhixuan Wei Xiaoqi Wang Xu Jin Shiyu Yao Gang Chen Zexiang Shen Fei Du Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun 130012China PetroChina Res Inst Petr Explorat&Dev RIPEDBeijing 100083China Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore

Nano-structure designs with conductive networks have been demonstrated as an efficient strategy to boost sodium storage properties for transition metal ***,an exquisite nanosheets self-assembled hierarchical flower-ball-like CuFeS_(2)embedded into the reduced graphene oxide(RGO)nanosheet matrix(F-CuFeS_(2)@RGO)is fabricated via a concise two-step solvothermal *** a well-designed architecture affords increased active reaction interfaces and enhanced mixed ionic/electronic ***,the external RGO matrix can effectively alleviate the volume expansion and create a stable structure during long *** a result,the composite material exhibits a high reversible capacity of 559 mAh·g^(-1)at 0.1 A·g^(-1),a superior rate capability of 455 mAh·g^(-1)at 5 A·g^(-1)and excellent cyclic stability with 96%capacity retention after 4800 cycles at 5 A·g^(-1),among the best in the state-of-the-art transition metal sulfide ***,F-CuFeS_(2)@RGO delivers outstanding low-temperature performances with a high capacity retention of 100%and 91%at-20 and-40℃,respectively,over 200 *** proposed hierarchical structure fabrication paves a new direction in the design of high-performance electrodes for all-temperature energy storage applications.

关键词： transition metal sulfides CuFeS_(2) anode sodium-ion batteries(SIBs) wide temperature

A phenazine anode for high-performance aqueous rechargeable batteries in a wide temperature range

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Nano Research 2020年第3期13卷 676-683页

作者： Tianjiang Sun Chang Liu Jiayue Wang Qingshun Nian Yazhi Feng Yan Zhang Zhanliang Tao Jun Chen Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin300071China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics(DICP)Chinese Academy of SciencesDalian116023China Institute of Molecular Sciences and Engineering Shandong UniversityQingdaoBinhai Road 72Qingdao266237China

Aqueous rechargeable batteries are a possible strategy for large-scale energy storage ***,limited choices of anode materials restrict their further *** we report phenazine(PNZ)as stable anode materials in different alkali-ion(Li+,Na+,K+)electrolyte.A novel full cell is assembled by phenazine anode,Na0.44MnO2 cathode and 10 M NaOH electrolyte to further explore the electrochemical performance of phenazine *** battery is able to achieve high capacity(176.7 mAh·g^−1 at 4 C(1.2·Ag^−1)),ultralong cycling life(capacity retention of 80%after 13,000 cycles at 4 C),and excellent rate capacity(92 mAh·g^−1 at 100 C(30 A·g^−1)).The reaction mechanism of PNZ during charge—discharge process is demonstrated by in situ Raman spectroscopy,in situ Fourier transform infrared(FTIR)spectroscopy,X-ray photoelectron spectroscopy(XPS)and density functional theory(DFT)***,the system is able to successfully operate at wide temperature range from−20 to 70°C and achieves remarkable electrochemical performance.

关键词： aqueous rechargeable batteries phenazine Na0.44MnO2 alkali-ion electrolyte wide temperature

Broad temperature adaptability of vanadium redox flow battery-part4:Unraveling wide temperature promotion mechanism of bismuth for V^(2+)/V^(3+) couple

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Journal of Energy Chemistry 2018年第5期27卷 1333-1340页

作者： Yuchen Liu Feng Liang Yang Zhao Lihong Yu Le Liu Jingyu Xi The State Key Laboratory of Refractories and Metallurgy School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Institute of Green Chemistry and Energy Graduate School at Shenzhen Tsinghua University School of Applied Chemistry and Biological Technology Shenzhen Polytechnic

Vanadium flow battery （VFB） is a fast going and promising system for large-scale stationary energy stor- age. However, drawbacks such as low power density and narrow temperature window caused by poor catalytic activity of graphite felt （GF） electrodes limit its worldwide application. In this paper, bismuth, as a low-cost, no-toxic and high-activity electrocatalyst, is used to modify the thermal activated GF （TGF） via a facile hydrothermal method. Bismuth can effectively inhibit the side reaction of hydrogen evolution in wide temperature range, while promoting the V2＋/V3＋ redox reaction. As a result, the VFB assembled with Bi/TGF as negative electrode demonstrates outstanding rate performance under the current density up to 400 mAcm-2, as well as a long-term stability over 600 charging/discharging cycles at a high cur- rent density of 150mA cm-2. Moreover, it also shows excellent temperature adaptability from -10 ℃ to 50 ℃ and high durability for life test at the temperature of 50 ℃.

关键词： Vanadium flow battery Graphite felt electrode Bismuth Hydrogen evolution reaction wide temperature

The sulfolane-based liquid electrolyte with LiClO_(4)additive for the wide-temperature operating high nickel ternary cathode

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Nano Research 2023年第3期16卷 3855-3863页

作者： Yixin Zhu Shuang He Jiayi Ding Guangyu Zhao Fang Lian School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China University of New South Wales PontypriddCF371DLUK

An adequate wide temperature electrolyte for high nickel ternary cathode is urgent to further develop high energy density ***,a comprehensive double-salt local high-concentration sulfolane-based electrolyte(DLi)is proposed with specific sheath structure to build stable interface on the LiNi_(0.8)Co_(0.1)Mn_(0.1O2)(NCM811)cathode at wide operating temperature between−60 and 55℃.Lithium perchlorate(LiClO_(4))in combination with high concentration lithium bis-(trifluoromethanesulfonyl)imide(LiTFSI)strengthens the internal interaction between anion and cation in the solvation structure,increasing Li+transference number of the electrolyte to ***,the structure and component characteristics of the passive interface layer on NCM811 are modulated,decreasing desolvation energy of Li+ions,benefiting Li+transport dynamics especially at low temperature,and also ensuring the interfacial stability at a wide operating temperature *** a result,the cathode with DLi exhibits excellent high-temperature storage performance and high capacity retention of 80.5%in 100 cycles at 55℃.Meanwhile,the Li||NCM811 cells can deliver high discharge capacity of 160.1,136.1,and 110.3 mAh·g^(−1)under current density of 0.1 C at−20,−40,and−60℃,maintaining 84.5%,71.8%,and 58.2%of the discharge capacity at 30℃,***,it enables NCM811 cathode to achieve a reversible capacity of 142.8 mAh·g^(−1)in 200 cycles at−20℃and 0.2 *** studies shed light on the molecular strategy of wide operational temperature electrolyte for high nickel ternary cathode.

关键词： liquid electrolyte high nickel ternary cathode wide temperature interface sheath structure

wide-temperature rechargeable Li metal batteries enabled by an in-situ fabricated composite gel electrolyte with a hierarchical structure

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Fundamental Research 2022年第4期2卷 611-618页

作者： Chao Ma Xizheng Liu Hui Geng Xiaoshu Qu Wei Lv Yi Ding Tianjin Key Laboratory of Advanced Functional Porous Materals Instute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China henzhen Geim Graphene Center Engineerng Laboratory for Functionalized Carbon MaterialsTsinghua Shenzhen International Graduate SchoolTsinghua UniversiyShenzhen518055China Jilin Institute of Chemical Technology Jlin 132073China

Lithium metal bateries(LMBs)are well recognized as promising next-generation high energy density batteries,but the uncontrollable Li dendrites growth and the volatilization/gas production of electrolytes,which become extremely worse at low and high temperatures,restrict their practical *** this work,a hierarchically structured polymerized gel electrolyte(HGE),which was composed of an inorganic(Li_(x)Ga_(86) In_(14) alloy and Licl salt)/organic(polymerized tetrahydrofuran(THF)hybrid layer and the bulk polymerized THF electrolyte,was proposed to achieve a steady performance of LMBs over a wide temperature range of-20-55℃.The HGE fabrication can be completed within ssembled ells with a simultaneously occurring replacement-polymerizationalloying reaction,which helps decrease the interfacial resistance and enhance the stability and ion diffusion under both low and high *** use of THF with low polarity also ensures high ion conductivity under low *** such HGE,the Li symmetric cell showed low overpotential under 10 mA/cm^(2) with a *** of 10 mAh/cm^(2) over a 1200 h cycling,and the fullcell coupled with Li_(4)Ti_(5)O_(12) demonstrated high capacity retention over 5000 cycles at room ***,the symmetric cells showed low overpotentials of 12 mV at 55℃ and 80 mV at-20℃ at 2 mA/cm^(2) after a 1000 h cyeling,and the full cell revealed the high capacity retention of 93.5%at 55℃ and 88.8%at-20℃ after 1500 cycles under a high current density of 1000 mA/*** work shows a hierarchically structured polymerized electrolyte design for advanced Li batteries workable under broad temperatures.

关键词： Lithium metal anode Hierarchical gel eletrolyte In-situ polymerization wide temperature LiGaln lloy

Flame-retardant concentrated electrolyte enabling a Li F-rich solid electrolyte interface to improve cycle performance of wide-temperature lithium–sulfur batteries

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Journal of Energy Chemistry 2020年第12期29卷 154-160页

作者： Zhe Yu Jianjun Zhang Chao Wang Rongxiang Hu Xiaofan Du Ben Tang Hongtao Qu Han Wu Xin Liu Xinhong Zhou Xiaoyan Yang Guanglei Cui College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao Industrial Energy Storage Technology Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina

Lithium–sulfur batteries have been regarded as the most promising high-energy electrochemical energy storage device owing to the high energy density, low cost and environmental friendliness. However, traditional lithium–sulfur batteries using ether-based electrolytes often suffer from severe safety risks(i.e. combustion). Herein, we demonstrated a novel kind of flame-retardant concentrated electrolyte(6.5 M lithium bis(trifluoromethylsulphonyl)imide/fluoroethylene carbonate) for highly-safe and widetemperature lithium–sulfur batteries. It was found that such concentrated electrolyte showed superior flame retardancy, high lithium-ion transference number(0.69) and steady lithium plating/stripping behavior(2.5 m Ah cm^(-2) over 3000 h). Moreover, lithium–sulfur batteries using this flame-retardant concentrated electrolyte delivered outstanding cycle performance in a wide range of temperatures(-10 °C, 25 °C and 90 °C). This superior battery performance is mainly attributed to the LiF-rich solid electrolyte interphase formed on lithium metal anode, which can effectively suppress the continuous growth of lithium dendrites. Above-mentioned fascinating characteristics would endow this flame-retardant concentrated electrolyte a very promising candidate for highly-safe and wide-temperature lithium–sulfur batteries.

关键词： Flame retardancy Concentrated electrolyte LiF-rich solid electrolyte interphase Lithium–sulfur batteries wide temperature

Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors

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National Science Review 2022年第7期9卷 97-105页

作者： Yuanyuan Zhu Shuanghao Zheng Pengfei Lu Jiaxin Ma Pratteek Das Feng Su Hui-Ming Cheng Zhong-Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Chinese Academy of Sciences University of Chinese Academy of Sciences Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen International Graduate School Tsinghua University

MXenes are one of the key materials for micro-super capacitors(MSCs),integrating miniaturized energy-storage components with ***,the energy densities of MSCs are greatly hampered by MXenes’ narrow working potential window(typically≤0.6 V) in aqueous ele ***,we report the fabrication of high-voltage MXene-MSCs through the efficient regulation of reaction kinetics in 2 D Ti3C2TxMXene microelectrodes using a water-in-LiCl(WIL,20 m LiCl) salt gel ***,the intrinsic energy-storage mechanism of MXene microelectrodes in WIL,which is totally different from traditional electrolytes(1 m LiCl),was revealed through in situ and ex situ *** validated that the suppression of MXene oxidation at high anodic potential occurred due to the high content of WIL regulating anion intercalation in MXene electrodes,which effectively broadened the voltage window of ***,the symmetric planar MXene-MSCs presented a record operating voltage of 1.6 V,resulting in an exceptionally high volumetric energy density of 31.7 mWh *** the ultra-high ionic conductivity(69.5 mS cm-1) and ultralow freezing point(-57℃) of the WIL gel electrolyte, our MSCs could be operated in a wide temperature range of-40 to 60℃,and worked for a long duration even at-40℃,demonstrative of its practicality in extreme environments.

关键词： MXene micro-supercapacitors water-in-LiCl aqueous high voltage wide temperature