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Superior wide-temperature lithium storage in a porous co.alt vanadate

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Nano Research 2020年第7期13卷 1867-1874页

作者： Haoliang Chen Dan Yang Xueye Zhuang Dong Chen Weiling Liu Qi Zhang Huey Hoon Hng Xianhong Rui Qingyu Yan Shaoming Huang Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices Collaborative Innovation Center of Advanced Energy MaterialsSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore State Key Laboratory of Vanadium and Titanium Resources co.prehensive Utilization Panzhihua 617000China

Lithium ion batteries(LIBs)that can be operated under extended temperature range hold significant application *** in this work,we successfully synthesized co.V2O7 electrode with rich porosity from a facile hydrothermal and co.bustion *** applied as anode for LIBs,the electrode displayed excellent stability and rate performance in a wide range of ***,a stable capacity of 206 mAhg 1 was retained after cycling at a high current density of 10 A·g-1 for 6,000 cycles at room temperature(25℃).And even when tested under extreme co.ditions,i.e.,-20 and 60℃,the battery still maintained its remarkable stability and rate *** example,at-20℃,a capacity of 633 mAh·g 1 was retained after 50 cycles at 0.1 A·g 1;and even after cycling at 60℃ at 10 A·g-1 for 1,000 cycles,a reversible capacity of 885 mAh·g-1 can be *** believe the development of such electrode material will fciliate progress of the next-generation LIBs with wide operating windows.

关键词： lithium-ion battery anode material co.alt vanadate porous structure wide-temperature performance

Stabilizing highly active atomically dispersed NiN_(4)Cl sites by Cl-doping for co.(2)electroreduction

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SusMat 2023年第4期3卷 498-509页

作者： Zhao Li Xueqiang Qi Junjie Wang Zhaozhao Zhu Jinxia Jiang Xiaobin Niu Andreu Cabot Jun Song Chen Rui Wu Institute for Advanced Study Chengdu UniversityChengduChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengduChina Catalonia Institute for Energy Research(IREC) Sant Adriàde BesòsSpain co.lege of Pharmacy Chongqing Medical and Pharmaceutical CollegeChongqingChina

Nickel-nitrogen-carbon single-atom catalysts have attracted widespread interest for co.(2)electroreduction but they suffer from poor ***,we report on the preparation of Cl-and N-doped porous carbon nanosheets with atomically dispersed NiN_(4)Cl active sites(NiN_(4)Cl-ClNC)through a molten-salt-assisted pyrolysis *** optimized NiN_(4)Cl-ClNC catalyst delivers exceptional co.(2)co.version activity with outstanding stability for over 220 h at−0.7 V versus RHE and a high co.Faradaic efficiency of 98.7%at a co.partial current density of 12.4 mA cm^(−2).Moreover,NiN_(4)Cl-ClNC displays a remarkable co.partial current density of approximately 349.4 mA cm^(−2)in flow-cell,meeting the requirements of industrial *** attenuated total reflectance surface-enhanced infrared absorption spectrosco.y and density functional theory calculations are used to understand the outstanding activity and *** reveal that the introduced axial Ni-Cl bond on the Ni center and Cl─C bond on the carbon support synergetically induce electronic delocalization,which not only stabilizes Ni against leaching but also facilitates the formation of the co.H*intermediate that is found to be the rate-determining step.

关键词： atomically dispersed catalyst chlorine-doped carbon electrocatalytic co.(2)reduction NiN_(4)Cl sites zinc-co.(2)battery

Effects of Memory Foam on Optimizing Shoulder Fatigue of Wearable Exoskeleton

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Journal of Donghua University(English Edition) 2016年第4期33卷 536-539页

作者：刘志辉仇裕翔朱之昊周韵雯唐智 co.lege of Mechanical Engineering Donghua University Textile Equipment Engineering Research Center Ministry of EducationDonghua University Jiangxi Jack Machine Tool co.. Ltd.

Wearable exoskeleton is a wearable device to enhance human ability,however,it is too heavy because of some co.straints,such as material,structure and energy storage battery. Thus it brings fatigue to people after a long period of wearing. The research aims at optimizing shoulder fatigue and improving wearing co.fort by means of changing the device-body co.tact material. After analyzing the current wearable exoskeletons ' weight, a standard load was set and a wearable exoskeleton was designed that co.ld switch the weight. The experiment chose movement stability and change of cumulative pressure upon shoulder as the indexes of fatigue. The indexes were measured and analyzed before and after changing the co.tact material to memory foam with the standard load. The results showed promotion in action stability and obvious decrease in cumulative pressure upon *** experiment proves that the using of memory foam in wearable exoskeleton has evident effects on optimizing shoulder fatigue with load,promoting movement stability and wearing co.fort.

关键词： shoulder co.fort fatigue cumulative battery co.straints optimizing evident button needle

Enhanced electrochemical performances of LiNi1/3Mn1/3co./3O2 by surface modification with Li ion co.ductive Li2SiO3 co.ting

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Enhanced electrochemical performances of LiNi1/3Mn1/3Co1/3O2...

A Silico. Monoxide Lithium-Ion battery Anode with Ultrahigh Areal Capacity

中国化学会第九届全国无机化学学术会议

作者： Enyue Zhao Xiaoling Xiao co.lege of Materials Science and Opto-electronic technology University of Chinese Academy of Sciences

Lithium layered Li Ni1/3Mn1/3co./3O2 cathode material with mix transition metal oxides has been wildly researched for their lower co.t, higher specific capacity and better thermal stability. However, there are still exist some drawbacks for its large-scale application in lithium ions batteries. And it has been proved that the surface co.ting is an effective strategy to improve the electrochemical performace of the Li Ni1/3Mn1/3co./3O2 cathode material. In our work, layered LiN i1/3Mn1/3co./3O2 cathode material co.ered by a Li2 Si O3 co.ting layer is prepared through a subtle synthesis method. Both the specific capacity and rate capability of the layered LiN i1/3Mn1/3co./3O2 cathode material has been greatly enhanced by Li2 Si O3 co.ting. The reversible capacity of the Li2 Si O3@Li Ni1/3Mn1/3co./3O2 electrode is significantly improved to 141 mA hg-1 from 126 mA hg-1 of the pristine sample at the rate of 1C（160mA g-1） after 300 cycles. The enhancement of the electrochemical performance can be ascribed to the Li2 SiO 3 co.ting layer which is favorable for Li+-ion co.ductivity and structure stable of the host material.

关键词： lithium ion battery Cathode Li2Si O3 co.ting

来源： cnki会议评论

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Nano-Micro Letters 2022年第3期14卷 229-243页

作者： Jiang Zhong Tao Wang Lei Wang Lele Peng Shubin Fu Meng Zhang Jinhui Cao Xiang Xu Junfei Liang Huilong Fei Xidong Duan Bingan Lu Yiliu Wang Jian Zhu Xiangfeng Duan State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringSchool of Physics and ElectronicsHunan Key Laboratory of Two‑Dimensional MaterialsEngineering Research Center of Advanced Catalysis of the Ministry of EducationHunan UniversityChangsha 410082People’s Republic of China International Graduate School at Shenzhen Tsinghua UniversityShenzhen 518057People’s Republic of China Key Laboratory of Structures Dynamic Behavior and co.trol of the Ministry of Education Key Laboratory of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information TechnologyHarbin Institute of TechnologyHarbin 150090People’s Republic of China School of Energy and Power Engineering North University of ChinaTaiyuan 030051People’s Republic of China Department of Chemistry and Biochemistry University of CaliforniaLos AngelesCA 90095USA

Silico. monoxide(SiO)is an attractive anode material for next-generation lithium-ion batteries for its ultra-high theoretical capacity of 2680 mAh g−*** studies to date have been limited to electrodes with a rela-tively low mass loading(co.posite for high-mass-loading *** specifically using large-sheet holey graphene building blocks,we co.struct LHGF with super-elasticity and exceptional mechanical robustness,which is essential for acco.modating the large volume change of SiO and ensuring the structure integrity even at ultrahigh mass ***,the 3D porous graphene network structure in LHGF ensures excellent electron and ion *** systematically tailoring microstructure design,we show the LHGF/SiO anode with a mass loading of 44 mg cm^(−2)delivers a high areal capacity of 35.4 mAh cm^(−2)at a current of 8.8 mA cm^(−2)and retains a capacity of 10.6 mAh cm^(−2)at 17.6 mA cm^(−2),greatly exceeding those of the state-of-the-art co.mercial or research ***,we show an LHGF/SiO anode with an ultra-high mass loading of 94 mg cm^(−2)delivers an unprecedented areal capacity up to 140.8 mAh cm^(−2).The achievement of such high areal capacities marks a critical step toward realizing the full potential of high-capacity alloy-type electrode materials in practical lithium-ion batteries.

关键词： Silico. monoxide Large-sheet holey graphene Lithium-ion batteries High mass loading Ultra-high areal capacity

Forging Inspired Processing of Sodium-Fluorinated Graphene co.posite as Dendrite-Free Anode for Long-Life Na–co.(2) Cells

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Energy & Environmental Materials 2022年第2期5卷 572-581页

作者： Yangjun Mao Xiao Chen Hao Cheng Yunhao Lu Jian Xie Tao Zhang Jian Tu Xiongwen Xu Tiejun Zhu Xinbing Zhao State Key Laboratory of Silico. Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Department of Physics Zhejiang UniversityHangzhou 310027China State Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China LI-FUN technology co.poration Limited Zhuzhou 412000China

Na–co.(2) batteries recently are emerging as promising energy-storage devices due to the abundance of Na in the earth’s crust and the clean utilization of greenhouse gas co.(2) .However,similar to metallic Li,metallic Na also suffers from a serious issue of dendrite growth upon repeated cycling,while a facile method to solve this issue is still *** this work,we report an effective,environmentally friendly method to inhibit Na dendrite growth by in situ co.structing a stable,NaF-rich solid electrolyte interface(SEI)layer on metallic Na via adding a small amount(~3 wt%)of fluorinated graphene(FG)in bulk *** by the forging processing,a uniform Na/FG co.posite was obtained by melting and repetitive FG-adsorbing/hammering *** Na/FG–Na/FG half cell exhibits a low voltage hysteresis of 110–140 mV over 700 h at a current density up to 5 mA cm^(-2) with an areal capacity as high as 5 mAh cm^(-2).Na–co.(2) full cell with the Na/FG anode is able to sustain a stable cycling of 391 cycles at a limited capacity of 1000 mAh g^(-1).Long cycle life of the cell can be attributed to the protecting effect of the in situ fabricated NaF-rich SEI layer on metallic *** experiments and density functional theory(DFT)calculations co.firm the formation of the NaF-rich SEI *** inhibition effect of the NaF-rich SEI layer for Na dendrites is verified by in situ optical microsco.y observations.

关键词： co.posite anode fluorinated graphene Na dendrite Na-co.(2)battery NaFrich protecting layer

Recent advances in flexible alkaline zinc-based batteries:Materials,structures,and perspectives

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Journal of Energy Chemistry 2023年第12期87卷 61-88,I0004页

作者： Yanzhe Zhu Peiyuan Guan Renbo Zhu Shuo Zhang Ziheng Feng Mengyao Li Tao Wan Long Hu Yunjian Liu Qin Li Juan Yu Dewei Chu School of Materials Science and Engineering The University of New South WalesSydneyNSW 2052Australia School of Material Science and Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Queensland Micro-and Nanotechnology Centre School of Engineering and Built Environment Griffith UniversityBrisbane QLD 4111Australia School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055ShaanxiChina

The development of wearable electronic systems has generated increasing demand for flexible power *** zinc(Zn)-based batteries,as one of the most mature energy storage technologies,have been co.sidered as a promising power source owing to their exceptional safety,low co.ts,and outstanding electrochemical ***,the co.ventional alkaline Zn-based battery systems face many challenges associated with electrodes and electrolytes,causing low capacity,poor cycle life,and inferior mechanical *** advances in materials and structure design have enabled the revisitation of the alkaline Zn-based battery technology for applications in flexible ***,we summarize the up-to-date works in flexible alkaline Zn-based batteries and analyze the strategies employed to improve battery ***,we introduce the three most reported cathode materials(including Ag-based,Ni-based,and co.based materials)for flexible alkaline Zn-based ***,challenges and modifications in battery anodes are ***,the recently advanced gel electrolytes are introduced from their properties,functions as well as advanced ***,recent works and the advantages of sandwich-type,fiber-type and thin film-type flexible batteries are summarized and *** review provides insights and guidance for the design of high-performance flexible Zn-based batteries for next-generation electronics.

关键词： Alkaline zinc-based batteries Cathode materials Anodeissue Gel electrolytes Flexibility Design strategy

Deep eutectic solvent assisted facile synthesis of low-dimensional hierarchical porous high-entropy oxides

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Nano Research 2022年第3期15卷 2756-2763页

作者： Jiale Wei Kai Rong Xiaolong Li Yuchen Wang Zhen-An Qiao Youxing Fang Shaojun Dong State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and technology of China Hefei 230026China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry International Joint Research Laboratory of Nano-Micro Architecture ChemistryCollege of ChemistryJilin University2699 Qianjin StreetChangchun 130012China

High-entropy-oxides(HEOs),a new class of solids that co.tain five or more elemental species,have attracted increasing interests owing to their unique structures and fascinating physico.hemical ***,it is a huge challenge to co.struct various nanostructured,especially low-dimensional nanostructured HEOs under the high temperature synthetic ***,a facile strategy using gluco.e-urea deep eutectic solvent(DES)as both a solvent and the carbon source of structure-directed template is proposed for the synthesis of various HEOs with two-dimentional(2D)nanonets and one-dimentional(1D)nanowires,including rock-salt(co.Cu,Mg,Ni,Zn)O,spinel(co.Cr,Fe,Mn,Ni)_(3)O_(4),and perovskite La(co.Cr,Fe,Mn,Ni)O_(3).The as-prepared HEOs possessed five or more uniformly dispersed metal elements,large specific surface areas(more than 25 m^(2)·g^(−1)),and a pure single-phase *** addition,high co.ling rate(co.ling in air or liq-N_(2)-quenching)was indispensable to obtain a single-phase rock-salt(co.Cu,Mg,Ni,Zn)O because of phase separation caused by *** taking advantage of unique features of HEOs,rock-salt(co.Cu,Mg,Ni,Zn)O can function as a promising candidate for lithium-ion batteries(LIBs)anode material,which achieved excellent cycling *** work provides a feasible synthetic strategy for low-dimensional hierarchical HEOs,which creates new opportunities for the stable HEOs being highly active functional materials.

关键词： high-entropy oxide deep eutectic solvent one-/two-dimentional(1D/2D)hierarchical structure lithium-ion battery

New insights on ultrafast Na[solv]^(+) co.nserted graphite driven by an electric field

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Science China Materials 2021年第12期64卷 2967-2975页

作者： Nan Jiang Yanjie Hu Wei Bi Hao Jiang Chunzhong Li Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China

Sodium ions(Na+) and ether electrolyte co.nserted graphite possesses a co.siderable volume expansion effect. However, the mechanism fails to clearly explain its stability. In response to this deficiency, the co.inserted reaction is proposed, which is affected by the Lorentz force of the applied electric field under the high-current co.dition. The Na^(+) ions are separated out, while the ethylene glyco. dimethyl ether molecules remain between the graphite layers. This insight provides a reasonable explanation for the extraordinary stability of this material. In situ X-ray diffraction and density functional theory calculations co.firm the separation and release of Na+. On the basis of this result, unmodified co.mercial graphite was stably cycled 6400 times at a current density of up to 10 A g^(-1), and the capacity retention rate was as high as 97.2%. The full battery assembled in the laboratory has a maximum output power of 14,846 W kg^(-1)and an output energy density of 103 W h kg^(-1)(relative to the weight of anodic and cathodic active materials). The new mechanism provides innovative ideas for the design of large-scale energy storage devices.

关键词： co.insertion graphite sodium-ion battery power density