COMPOSITES PART B-ENGINEERING
·
2023
·
IF 13.1
Zirui Zhao,Shixun Yang,Mingwu Xiang,Jinkui Li,Dongyuan Lei,Junming Guo,Shulei Chou,Mingwei Yuan,Wei Bai,Xiaofang Liu
Inferior conductivity of sulfur and inevitable shuttle effect of polysulfides are major obstacle of commercial application for Li–S batteries. Balancing the relation between adsorption effect and polysulfides synchronous conversion on the surfaces of metal oxides is crucial. Herein, a combination strategy with graphitized porous carbon and bifunctional separator is proposed for the multiple suppression of shuttle effect by the synergistic adsorption and synchronous conversion of polysulfides. Silk cocoon derived in-situ N-doping porous carbon and nano-TiO 2 /Super P decorated bifunctional separator are prepared by simultaneous activation/carbonization and surface coating approach, respectively. The unique lamellar porous carbon and nano-TiO 2 effectively encapsulate active sulfur and immobilize polysulfides by the physical/chemical synergetic adsorption. The density functional theory calculations effectively testify that TiO 2 with exposed (101) plane shows high chemical affinity toward polysulfides. Especially the as-prepared porous carbon shows an ultrahigh degree of graphitization that enhances the electronic conductivity . The TiO 2 /Super P-coated conductive bifunctional separator not only accelerates the electron transmission but also synchronously facilitates the redox conversion of polysulfides adsorbed on the TiO 2 surface. Benefiting from the above structure merits, the optimized battery delivers high initial discharge capacity of 1311 mAh g −1 at 0.2C and good cycling stability with a low capacity decay of 0.037% per cycle at 1.0C as well as excellent rate capacity of 977 mAh g −1 at 2.0C. Even with 4.2 mg cm −2 , the discharge capacity of 697 mAh g −1 is still retained after 70 cycles at 0.1C. This combination strategy exploits a novel way for the design and preparation of advanced lithium-sulfur batteries.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yang Zhan,Shun-zhi Yu,Shao-hua Luo,Jian Feng,Qing Wang
Transition-metal sulfides (TMS) are one of the most promising cathode catalysts for Li–O2 batteries (LOBs) owing to their excellent stabilities and inherent metallicity. In this work, a highly efficient mode has been used to synthesize Co@CNTs [pyrolysis products of metal–organic frameworks (MOFs)]-derived CoS2(CoS)@NC. Benefiting from the special yolk–shell hierarchical porous morphology, the existence of Co–N bonds, and dual-function catalytic activity (ORR/OER) of the open metal sites contributed by MOFs, the CoS2@NC-400/AB electrode illustrated excellent charge–discharge cycling for up to nearly 100 times at a current density of 0.1 mA cm–2 under a limited capacity of 500 mA h g–1 (based on the total weight of CoS2@NC and AB) with a high discharge voltage plateau and a low charge cut-off voltage. Meanwhile, the average transferred electron number (n) is around 3.7 per O2 molecule for CoS2@NC-400, which is the chief approach for a four-electron pathway of the ORR under alkaline media. Therefore, we believe that the novel CoS2@NC-400/AB electrode could serve as an excellent catalyst in the LOBs.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Bingqin Li,Zhen Sun,Na Lv,Yaqi Hu,Liangxing Jiang,Zongliang Zhang,Fangyang Liu
All-solid-state lithium metal batteries (ASSLMBs) are considered promising candidates for next-generation energy storage systems. However, the growth of Li dendrites and interface side reactions hinder the practical application of ASSLMBs. To address these issues, a preformed Li–Ag alloy anode for an ASSLMB with the Li6PS5Cl electrolyte was constructed. The preformed Li–Ag alloy anode contains two distinct alloy layers, i.e., Li3Ag and Li0.98Ag0.02, with the former as a protection layer and the latter as a Li deposition site. Besides, a beneficial stable interlayer (Ag–P–S–Cl compound) produced by the reaction between Ag and Li6PS5Cl could work as a secondary protection layer between the anode and electrolyte. The dual protection (Li3Ag and Ag–P–S–Cl compound) suppresses dendritic growth and other interfacial issues effectively and simultaneously. Consequently, a LiCoO2/Li6PS5Cl/Li–Ag all-solid-state battery exhibits a remarkable specific capacity and excellent cycle stability. The dual-protection effect from the preformed Li–Ag alloy anode and the investigation of its working mechanism may enlighten a simple strategy for promoting the development of ASSLMBs.
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高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Ziling Wang,Xianzhu Peng,Shuai Guo,Mingjie Sun,Junfang Cheng,Lu Zou,Bo Chi,Jian Pu
Catalysts with high oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performances are crucial to the development of lithium-oxygen batteries (LOBs), which aim to promote Li2O2 deposition and decomposition and then avoid the active site passivation. Considering the metallic Ag possessing good electrical conductivity and excellent catalytic activity and perovskite oxides exhibiting high abundance, an easily tunable structure, and excellent intrinsically catalytic activity, we adopt the ultraviolet light to realize the deposition of Ag nanoparticles on the La0.6Sr0.4Fe0.9Mn0.1O3 (LSFM) substrate as a high-performance cathode for LOBs. The results confirm that the synergetic effect of Ag nanoparticle decoration and the La0.6Sr0.4Fe0.9Mn0.1O3 substrate could dramatically improve the electronic conductivity and ORR/OER kinetics of the nanohybrids. Ag@LSFM hybrids with abundant active sites and considerable electronic conductivity promote the deposition of a thinner discharge product film, and the corresponding LOBs deliver high discharge capacity (12 477 mAh g–1), a small gap between charge and discharge potentials (∼1.3 V), and high cycling stability (147 cycles). Overall, the study suggests that such a bifunctional catalyst is a promising candidate in LOBs.
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高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 5
·期 9
·4359-4367
·
IF 8.262
Yong Li,Shuan Wang,Yan-Bing He,Linkai Tang,Yusuf Valentino Kaneti,Wei Lv,Zhiqun Lin,Baohua Li,Quan-Hong Yang,Feiyu Kang
Titanium oxide (TiO2) has attracted great interest as a promising anode material for lithium (Li) ion batteries (LIBs) and sodium (Na) ion batteries (SIBs). However, the key factors that dictate the Li-ion and Na-ion storage and transportation in TiO2 remain unclear. Herein, we report a facile hydrolysis route to crafting a variety of high tap-density TiO2 spheres with controllable size and hierarchical pores. The Li-ion and Na-ion storage properties based on these TiO2 spheres were systematically investigated. The pore distribution and the size of TiO2 spheres were found to exert profound influence on the Li-ion and Na-ion storage and transportation. The Li-ion storage and transportation in dense TiO2 spheres was dependent mainly upon the micropore distribution and volume and independent of the size of spheres. In contrast, the excellent Na-ion storage and transportation in TiO2 spheres was enabled by the loose structure with a large macroscopic pore volume and shortened Na-ion diffusion length. High tap-density TiO2 spheres (1.06 g cm−3) with superior Li-ion and Na-ion storage properties were produced, exhibiting a Li-ion storage specific capacity of 189 mA h g−1 at 1C and a high capacity retention of 88.1% after 100 cycles, and a Na-ion storage specific capacity of 184 mA h g−1 at 1C and capacity retention of 90.5% after 200 cycles. The ability to understand the critical factors controlling the Li-ion and Na-ion storage in high tap-density TiO2 spheres enables their implementation for practical applications in Li-ion and Na-ion batteries.
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高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 9
·3472-3484
·
IF 4.569
Lei Xu,Zhipeng Gong,Yinglin Qiu,Wenbo Wu,Zunxian Yang,Bingqing Ye,Yuliang Ye,Zhiming Cheng,Songwei Ye,Zihong Shen,Yuanqing Zhou,Qiaocan Huang,Zeqian Hong,Zongyi Meng,Zhiwei Zeng,Hongyi Hong,Qianting Lan,Tailiang Guo,Sheng Xu
Metal sulfides, one kind of electrode material with very high theoretical capacity, have been widely studied for use in lithium and sodium ion batteries. However, there are some problems hindering their applications in electrodes, such as low conductivity and volume expansion. The MOF introduces metals with different coordination strengths into an existing MOF structure, which improves the performance of the electrode to a certain extent. In this paper, Fe/Zn bimetallic MOF rod-like superstructure was prepared based on Ostwald theory. Accompanied by sulfuration, the MOF was effectively combined with MoS2 and GO, and the objective materials Fe7S8-C/ZnS-C@MoS2/rGO composites were successfully prepared. The MOF material provides a good frame and an efficient electron transport path, while the robust rGO wall effectively inhibits the pulverization of materials during the lithium/sodium intercalation/escalation courses. This particular material exhibited excellent cycling and rate capability performance when used in Li/Na-ion batteries. When used in Li-batteries, the electrode material delivered a specific capacity of 1598.3 mA h g−1 at 0.1 A g−1 and remained at 1196.7 mA h g−1 even after about 100 cycles and further exhibited a specific capacity of 368.68 mA h g−1 at the current rate of 5 A g−1 even after 1000 cycles, respectively. As for sodium batteries, these electrode materials exhibited an initial reversible capacity of 1053.6 mA h g−1 at 0.1 A g−1 and the reversible capacity was still as high as 592.2 mA h g−1 after 200 cycles. It is perhaps that this composite material with its particular architecture and composition is greatly beneficial for electron transfer and Li/Na ion diffusion. In the repeated physicochemical/nutrifying process, the appropriate distance between adjacent MOFs is of great help in preventing volume changes and thus improving the electrochemical performance.
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高影响因子
HIGH PERFORMANCE POLYMERS
·
2023
·
IF 2.1
Xin Yue,Jinsheng Zhao
In this work, two D-A monomers 2,3-di(5-methylfuran-2-yl)-5,7-di(thiophene-2-yl) thiopheno[3,4-b] pyrazine (MFTTP) and 2,3-di(5-methylfuran-2-yl)-5,7-di(4-methoxythiophen-2-yl) thiopheno [3,4-b] pyrazine (MFMOTTP) were first obtained by Stille Coupling reaction, and then the corresponding composites were obtained by in-situ oxidative polymerization method with supercapacitor carbon. The surface morphology, chemical structure, and the element valence states of two materials were characterized by scanning electron microscopy, infrared and XPS, respectively. The specific surface areas of PMFTTP@SC and PMFMOTTP@SC are measured as 756.5 and 954.9 m2/g, respectively. The CV curves were used to determine the initial oxidative and initial reduction potentials, both polymers have a narrow band gap with Eg values below 1.5 eV, electron clouds in the HOMO and LUMO orbits of the polymer are mainly distributed on the aromatic rings of the polymer backbone. Polymer composite materials were used as the anode materials and the lithium sheets were used as counter electrode, and then lithium ion batteries are assembled. The first discharge specific capacities of PMFTTP@SC and PMFMOTTP@SC are 741.9 and 951.3 mAh/g at a current density of 100 mA/g, and as the electrodes are activated in the subsequent cycles, their coulomb efficiencies can reach more than 92% from the third cycle. In contrast, PMFMOTTP with methoxy-thiophene as the donor unit has higher conductivity and lower corresponding impedance due to its stronger electron donating ability and abundant pore structure, which is also more conducive to the lithiation/delithiation redox process.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2025
·
IF 6
Huijuan Guo,Keyu Chen,Jun Wang,Khomidov Fakhriddin Gafurovich,Kadyrova Zulayho Raimovna,Linqiang Mao
The complexity and similar characteristics for multiple valuable metals presented in LIBs cathode materials result in difficulties in their extraction and separation. This study introduces a novel two-stage approach to recovery valuable metals from spent lithium-ion batteries (LIBs) by formic acid (FA) selective leaching and other transition metals by a deep eutectic solvent (DES) leaching. Li is first selectively leached by FA with leaching efficiency of 98.87 % and further recovered in Li 2 CO 3 by distillation and calcination, whereas transition metals (Ni, Co, Mn) exhibited minimal co-leaching just with 1.41 %, 0.68 %, and 8.66 %. FA can be regenerated through atmospheric pressure distillation and reused in Li leaching process. Furthermore, the use of betaine hydrochloride (BeCl) in the synthesis of novel DES with FA to leach Mn, Co and Ni from FA leaching residue. Under optimal conditions, the leaching efficiencies for Mn, Co and Ni reached 96.87 %, 99.61 % and 98.88 % respectively. BeCl released Cl − and formed soluble complexes [MeCl 4 ] 2− with Ni 2+ , Co 2+ , and Mn 2+ . The leaching process conformed to the contraction-nucleation model and controlled by interfacial chemical reactions. The activation energies of 44.01, 43.08, and 34.40 kJ/mol for Co, Mn and Ni leaching process. Finally, Mn, Co and Ni were precipitated and recovered from the leachate by introducing oxalic acid. Mn, Co and Ni were recovered in the forms of MnC 2 O 4 ·2H 2 O、CoC 2 O 4 ·2H 2 O、NiC 2 O 4 ·2H 2 O with recovery efficiencies of 98.45 %, 96.13 %, and 97.42 %, respectively. This method achieved separation and recycling valuable metals through a two-stage leaching strategy, with the characteristic of high efficiency and simple recycling process.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yu Chen,Zihui Yu,Yihan Wang,Chengliang Ma,Quanli Jia,Ye Li
Based on the degradation mechanism of refractory saggar involving penetration and corrosion by Li-ion battery (LIB) cathode materials, developing refractory composites with a contiguous corrosion resistant materials network structure are considered one of the most promising ways to simultaneously achieve enhanced penetration resistance and corrosion resistance in saggar materials. Here, a mullite-based composites with a contiguous K 2 O-Al 2 O 3 -SiO 2 amorphous phase (KASp) network structure were simply prepared by incorporating potassium feldspar. The resulting material features a contiguous KASp network structure and exhibits low connectivity pores. This structure significantly enhances the composites resistance to penetration and corrosion by LIB cathode materials, primarily due to the combined effects of the KASp physical barrier and reduced pore continuity. Additionally, the strong KASp and mullite/corundum interfacial bonding reinforce the composites, leading to exceptional mechanical strength.
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高影响因子
ChemSusChem
·
2025
·Vol. 18
·期 20
·e202501351
·
IF 6.6
Tianhua Chen,Yongzheng Zhang,Simeng Wang,Jin Li,Hongzhen Lin,Dusan Losic,Shimou Chen,Jian Wang
Solid-state lithium metal batteries (SSLMBs) are promising for realizing higher energy density. However, the poor interfacial Li + transport kinetics and Li dendrite growth inhibit SSLMBs, leading to sluggish interfacial ion diffusion and depressive lifespan, which is attributed to high barriers blocked by anions or interface space in solid-state electrolytes. Herein, a flexible solid-state polymer skeleton employed with ionic liquid and metal-organic frameworks (PIM) electrolyte is proposed to strengthen interfacial Li ion exchange by improving the Li + sieving effect and interfacial wettability. Thanks to the immobilization effect of TFSI − anions affected by positive metal atom centers and pore morphology, the PIM electrolyte exhibits exceptional properties, i.e., a high ionic conductivity up to 3.1 mS cm −1 at 60 °C and an improved Li + transference number of 0.65, enabling symmetric cells of Li metal to run steadily for over 1000 h with lower voltage hysteresis (25 mV). Meanwhile, matching with high-voltage electrodes, the solid-state PIM electrolyte exhibits good compatibility and stability toward LiNi 0.6 Co 0.2 Mn 0.2 O 2 and LiFePO 4 electrodes, showing the capacity retentions of 85.5% and 96.5% after 120 and 400 cycles, respectively. This work suggests low interfacial diffusion resistances and high compatibility for make it a promising candidate for future solid-state battery. Graphical An ion-selective SSE is proposed with an accelerated Li+ migration feature, where the metal organic framework functions as a molecular sieve to selectively block bulky anions and the ionic liquid acts as Li ion bridge. Consequently, The as-prepared full cell exhibited high capacity and retention under the upper voltage of 4.3 V.
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高影响因子
Small
·
2025
·Vol. 21
·期 40
·e01766
·
IF 12.1
Jinhu Wang,Ziqiang Wu,Kaiwen Wang,Zhuoqi Gong,Yihao Hu,Yao Zhang
Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) solid electrolyte, renowned for its high ionic conductivity and robust safety profile at room-temperature, holds tremendous promise for diverse applications. However, it faces significant challenges, including high interface impedance with lithium and a propensity for lithium dendrite formation. To address these issues, a novel Li 4 (BH 4 ) 3 I/2(d-BN) (LBHIbn) composite buffer layer — exhibiting high ionic conductivity and critical current density — is introduced at the LLZTO|Li interface. Theoretical calculations reveal that LBHIbn, serving as a protective layer of LLZTO, possesses a lower interface energy (0.366 J m −2 ) against lithium metal compared to LiBH 4 (0.434 J m −2 ). Consequently, at 30 °C, the interface impedance of the LLZTO | LBHIbn | Li system is significantly reduced to 4 Ω cm −2 . Simultaneously, the critical current density increases from 0.93 mA cm −2 of LLZTO | Li to 5.29 mA cm −2 (for LLZTO-LBHIbn | Li) with stable lithium-ion plating/stripping cycling demonstrated over 1000 h. Unlike conventional metal-based buffer layers that suffer from limited ionic conductivity, LBHIbn uniquely integrates high ionic conductivity (4.0 × 10−⁴ S cm −1 ) with superior electronic insulation (1.9 × 10−⁹ S cm −1 ), achieving simultaneous reduction of interfacial resistance (4Ω cm 2 at 30 °C) and effective suppression of lithium dendrite growth. This study demonstrates that the LBHIbn interface treatment effectively mitigates the interfacial issues between the LLZTO electrolyte and lithium anode, thereby expanding the potential applicability of hydride and oxide electrolyte materials in all-solid-state batteries
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高影响因子
Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Zesen Gao,Shijie Yang,Yan Yang,Futing Sun,Tianshuo Zhang,Yunluo Wang,Tianrui Zhou,Lang Tao,Hucheng Song,Haijie Chen
Solid-state Li-CO2 batteries possess unique merits, including high environmental friendliness, extremely high energy density, and wide operational temperature range. In this work, we used the garnet-type Li6.4La3Zr1.4Ta0.6O12 (LLZTO) as the solid electrolyte for Li-CO2 batteries. By a simple solid-state reaction under vacuum, LLZTO was tightly composited with organic materials. Detailed analysis confirms that a three-in-one effect was achieved, resulting in additional Li+ migration pathways, improved mechanical properties of the electrolyte, and more active sites for Li2CO3 decomposition. This contributes to accelerated Li+ transport and fast CO2 reaction kinetics. A solid-state Li-CO2 cell was assembled using a Ru@C cathode and an integrated layer of LLZTO@PVDF interfaced with an artificial molten salt. An exceptionally low charging overpotential (below 3.0 V) was achieved, maintaining a charge potential retention rate of over 99%. This work introduces LLZTO as a promising electrolyte for solid-state Li-CO2 batteries, shedding light on the advancement of next-generation Li-CO2 battery technologies.
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