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Tuning composite solid-state electrolyte interface to improve the electrochemical performance of lithium-oxygen battery
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作者 Hao Ouyang Shan Min +6 位作者 Jin Yi Xiaoyu Liu fanghua ning Jiaqian Qin Yong Jiang Bing Zhao Jiujun Zhang 《Green Energy & Environment》 SCIE EI CAS CSCD 2023年第4期1195-1204,共10页
Thin and flexible composite solid-state electrolyte(SSE) is considered to be a prospective candidate for lithium-oxygen(Li-O_(2)) batteries with the aim to address the problems of unsatisfied safety, terrible durabili... Thin and flexible composite solid-state electrolyte(SSE) is considered to be a prospective candidate for lithium-oxygen(Li-O_(2)) batteries with the aim to address the problems of unsatisfied safety, terrible durability as well as inferior electrochemical performance. Herein, in order to improve the safety and durability, a succinonitrile(SN) modified composite SSE is proposed. In this SSE, SN is introduced for eliminating the boundary between ceramic particles, increasing the amorphous region of polymer and ensuring fast ionic transport. Subsequently, the symmetric battery based on the proposed SSE achieves a long cycle life of 3000 h. Moreover, the elaborate cathode interface through the SN participation effectively reduces the barriers to the combination between lithium ions and electrons, facilitating the corresponding electrochemical reactions.As a result, the solid-state Li-O_(2)battery based on this SSE and tuned cathode interface achieves improved electrochemical performance including large specific capacity over 12,000 m Ah g^(-1), enhanced rate capacity as well as stable cycle life of 54 cycles at room temperature. This ingenious design provides a new orientation for the evolution of solid-state Li-O_(2)batteries. 展开更多
关键词 Solid-state Li-O_(2)battery Composite electrolyte Cathode interface Room temperature SUCCINONITRILE
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Fundamental Understanding of Hydrogen Evolution Reaction on Zinc Anode Surface:A First‑Principles Study
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作者 Xiaoyu Liu Yiming Guo +6 位作者 fanghua ning Yuyu Liu Siqi Shi Qian Li Jiujun Zhang Shigang Lu Jin Yi 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第6期180-191,共12页
Hydrogen evolution reaction(HER)has become a key factor affecting the cycling stability of aqueous Zn-ion batteries,while the corresponding fundamental issues involving HER are still unclear.Herein,the reaction mechan... Hydrogen evolution reaction(HER)has become a key factor affecting the cycling stability of aqueous Zn-ion batteries,while the corresponding fundamental issues involving HER are still unclear.Herein,the reaction mechanisms of HER on various crystalline surfaces have been investigated by first-principle calculations based on density functional theory.It is found that the Volmer step is the ratelimiting step of HER on the Zn(002)and(100)surfaces,while,the reaction rates of HER on the Zn(101),(102)and(103)surfaces are determined by the Tafel step.Moreover,the correlation between HER activity and the generalized coordination number(CN)of Zn at the surfaces has been revealed.The relatively weaker HER activity on Zn(002)surface can be attributed to the higher CN of surface Zn atom.The atomically uneven Zn(002)surface shows significantly higher HER activity than the flat Zn(002)surface as the CN of the surface Zn atom is lowered.The CN of surface Zn atom is proposed as a key descriptor of HER activity.Tuning the CN of surface Zn atom would be a vital strategy to inhibit HER on the Zn anode surface based on the presented theoretical studies.Furthermore,this work provides a theoretical basis for the in-depth understanding of HER on the Zn surface. 展开更多
关键词 Aqueous Zn-ion battery Zn anode Hydrogen evolution reaction Coordination number First-principles calculation
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1.42-fold enhancement of formate selectivity by linker conversion on the Zn-based metal organic framework catalyst
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作者 Yayu Guan Yuyu Liu +2 位作者 fanghua ning Jin Yi Jiujun Zhang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第3期183-190,I0006,共9页
Electro-reduction of carbon dioxide(ERCO_(2)) is considered an effective method to alleviate the greenhouse effect and produce value-added chemicals.Achieving the dominant selectivity of Zn-based catalysts for formate... Electro-reduction of carbon dioxide(ERCO_(2)) is considered an effective method to alleviate the greenhouse effect and produce value-added chemicals.Achieving the dominant selectivity of Zn-based catalysts for formate remains a challenge.In this article,the ZnIn-E_(12) catalyst is successfully prepared by solvent assisted ligand exchange(SALE) method to convert organic ligands,achieving a Faradaic efficiency of 72.28% for formate at-1.26 V vs.RHE(V_(RHE)),which is 1.42 times higher than the original catalyst.Evidence shows that the successful conversion of organic ligands can transform the catalyst from the original large size polyhedron to cross-linked network of particles with a diameter of about 30 nm.The increased specific surface area can expose more active sites and facilitate the electrocatalytic conversion of CO_(2) to formate.This work is expected to provide inspiration for the regulation of formate selectivity and catalyst size in Zn-based catalysts. 展开更多
关键词 ELECTROCATALYST Carbon dioxide FORMATE Linker conversion
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Host-guest supramolecular interaction behavior at the interface between anode and electrolyte for long life Zn anode 被引量:3
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作者 Kai Wu fanghua ning +4 位作者 Jin Yi Xiaoyu Liu Jiaqian Qin Yuyu Liu Jiujun Zhang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第6期237-243,I0007,共8页
The hydrogen evolution reaction (HER) and dendrite growth associated with Zn anode have become the main bottlenecks for the further development of zinc ion batteries (ZIBs).In this work,the electrochemical activity of... The hydrogen evolution reaction (HER) and dendrite growth associated with Zn anode have become the main bottlenecks for the further development of zinc ion batteries (ZIBs).In this work,the electrochemical activity of H_(3)O^(+) is inhibited by the supramolecular host–guest complex composed of H_(3)O^(+) as guest and 18-crown-6 as host.The even Zn plating is induced by the host–guest complex electrostatic shielding layer on Zn anode,as detected by in-situ optical microscopy.The lamellar Zn is plated which profits from the improved Zn plating behavior.Density functional theory (DFT) calculation presents the stable structure of complex.The less produced H_(2) content is monitored online by a mass spectrometer during Zn plating/stripping,which indicates HER can be hampered by the host–guest behavior.Thus,the ZIBs with long life and high Coulombic efficiency are achieved via introducing 18-crown-6.The proposed host–guest supramolecular interaction is expected to facilitate the furthermore development of Zn batteries. 展开更多
关键词 H_(2)evolution Zn plating behavior Host-guest supramolecular interaction Dendrite free zinc ion batteries
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All boron-based 2D material as anode material in Li-ion batteries 被引量:3
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作者 ning Jiang Biao Li +1 位作者 fanghua ning Dingguo Xia 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2018年第6期1651-1654,共4页
To design the high-energy-density Li-ion batteries, the anode materials with high specific capacity haveattracted much attention. In this work, we adopt the first principles calculations to investigate the pos-sibilit... To design the high-energy-density Li-ion batteries, the anode materials with high specific capacity haveattracted much attention. In this work, we adopt the first principles calculations to investigate the pos-sibility of a new two dimensional boron material, named Be, as anode material for Li-ion batteries. Thecalculated results show that the maximum theoretical specific capacity of Bc is 1653mAh g-1 (LiBl.s).Additionally, the energy barriers of Li ion and Li vacancy diffusion are 330 meV and 110 meV, respec-tively, which imply fast charge and discharge ability for B6 as an anode material. The theoretical findingsreported in this work suggest that BG is a potential candidate as anode material of high-energy-density Li-ion batteries. 展开更多
关键词 Ali boron-based 2D material Anode materials Li-ion batteries First principles calculations
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Facile construction of a water-defendable Li anode protection enables rechargeable Li-O_(2) battery operating in humid atmosphere
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作者 Shan Min Xiaoyu Liu +6 位作者 Aonan Wang fanghua ning Yuyu Liu Jiaqian Qin Jiujun Zhang Shigang Lu Jin Yi 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第10期236-241,共6页
The rechargeable Li-O_(2) battery endowed with high theoretical specific energy density has sparked intense research interest as a promising energy storage system. However, the intrinsic high activity of Li anode,espe... The rechargeable Li-O_(2) battery endowed with high theoretical specific energy density has sparked intense research interest as a promising energy storage system. However, the intrinsic high activity of Li anode,especially to moisture, usually leads to inferior electrochemical performance of Li-O_(2) battery in humid environments, hindering its widespread application. To settle the trouble of poor moisture tolerance, fabricating a water-proof layer on the Li-metal anode could be an effective tactic. Herein, a facile strategy for constructing an ibuprofen-based protective layer on the Li anode has been proposed to realize highly rechargeable Li-O_(2) battery in humid atmosphere. Due to the in-situ reaction between ibuprofen reagent and metallic Li, the protective layer with a thickness of ~30 μm has been uniformly deposited on the surface of Li anode. Particularly, the protective layer, consisting of a large amount of hydrophobic alkyl group and benzene ring, can significantly resist water ingress and enhance the electrochemical stability of Li anode. As a result, the Li-O_(2) battery based on the protected Li anode achieves a long cycle life of 210 h(21 cycles at 1000 m Ah/g, 200 m A/g) in highly moist atmosphere with relative humidity(RH) of68%. This convenient and efficient strategy offers novel design concept of water-resistant metal anode,and paves the way to the promising future prospect for the high-energy Li-O_(2) battery implementing in the ambient atmosphere. 展开更多
关键词 Li-O_(2)battery Hydrophobic Li anode protection Humid atmosphere Cycling stability
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