CHINESE SCIENCE BULLETIN
·
2014
·Vol. 59
·期 17
·2017-2023
·
IF 1.365
Ma Delong,Yuan Shuang,Cao Zhanyi
Fe 3 O 4 is an attractive conversion reaction-based anode material with high theoretical capacity (928 mA h g −1 ). However, the poor cycling and rate performance hinder its applications in Li-ion batteries. In this work, we report an effective strategy to synthesize three-dimensionally macroporous graphene-supported Fe 3 O 4 hybrid composite. Benefiting from advantage of the special structure, the hybrid composite exhibits excellent Li + storage performance, delivering a high reversible capacity of 980 mA h g −1 at the current density of 4 A g −1 even after 470 cycles and ultrahigh rate capability (293 mA h g −1 even at current density of 20 A g −1 ).
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Jifei Liu,Yufeng Qi,Bi Fu,Jianfeng Dai,Qing Wang,Xiaojun Zhu,Xiangyu Shi
SnS 2 nanosheet (NS), SnS 2 nanoflower (NF) and SnS 2 NF@reduced graphene oxide (rGO) were synthesized by hydrothermal method . When used as anode materials for lithium-ion batteries (LIBs), SnS 2 NF@rGO exhibits reversible specific capacities of 525 mAh/g at 0.5C after 360 cycles and 412.5 mAh/g at 2.0C, which are significantly enhanced Li storage performance over SnS 2 NS and SnS 2 NF. The detailed electrochemical impedance spectroscopy (EIS) analysis were found that SnS 2 NF@rGO nanocomposite exhibits much reduced internal resistance originated from the decreasing Warburg factor. The electronic conductivity of the cycled SnS 2 NF@rGO is about three times more than that of cycled SnS 2 NS and SnS 2 NF. More importantly, the Li + diffusion coefficients D L i + were calculated using the galvanostatic intermittent titration technique (GITT) method, indicating SnS 2 NF@rGO demonstrated much enhanced Li + diffusion kinetics than that of electrodes without rGO additives. This means that SnS 2 NF@rGO is more suitable to be applied as anode materials for LIBs because the electrochemical performance was enhanced by the improved ionic transport properties, resulting from the increased electronic conductivity by the addition of two-dimensional layer structure rGO with superior electronic conductivity. This study could help us understanding how electronic conductivity contributed to ionic transport kinetics in electrochemical energy storage and conversion (EESC).
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Jing Sun,Cai-ling Liu,Hong-bo Huang,Xiao-hong Liu,Mei-lan Xie,Ling-ling Liu,Jun-tong Huang,Dui Ma,Zhi-yuan Wang,Shao-hua Luo,Xiao Liang
Layered metal oxides have attracted significant research interest as potential cathode materials for sodium-ion batteries (SIBs), primarily owning to their excellent energy density characteristics and economic viability. Nonetheless, the durability of these materials is limited due to irreversible phase transformations and redox reactions involving lattice oxygen, especially under high-voltage conditions. This results in progressive structural collapse and accelerated capacity degradation. In this study, an innovative three-in-one design approach that combines "high-entropy, dual-phase and Li doping" for layered cathodes is proposed. The study elucidates that the combination of a dual-phase and high-entropy structure effectively improves structural integrity and cycling stability. Furthermore, Li doping promotes the redox reaction of cationic ions and facilitates charge compensation, thereby improving the capacity. The prepared cathode material, P2/O3-Na 0.7 Mn 0.4 Ni 0.27 Li 0.03 Cu 0.1 Fe 0.1 Ti 0.1 O 2 , delivers a high capacity of 139 mAh g −1 , stable cycling capability, superior rate performance (79.1 mAh g −1 at 2000 mA g −1 ) and enhanced air stability. In a full cell configuration combining a high-entropy cathode and a hard carbon anode, outstanding electrochemical performance is demonstrated, with a capacity of 138.4 mAh g −1 and an energy density of 410 Wh kg −1 . This work proposes a novel design strategy for high-performance SIBs.
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Energy & Environmental Materials
·
2025
·
IF 14.1
Junjie Huo,Chunxi Hai,Yanxia Sun,Shengde Dong,Luxiang Ma,Xin He,Qi Xu,Yuan Zhou
Owing to its excellent eco-friendliness and facile water elution properties, aluminum-based lithium adsorbents have attracted a surge of interest for selectively extracting Li + from Salt Lake brines, which account for more than 60% of the global lithium resources. However, structural collapse, facile deactivation during desorption process, and ultra-low actual adsorption capacity limit its further large-scale application, particularly in low-grade sulfate-type brines. Herein, considering its advantages, limitations, and structural features, the structural collapse of the aluminum-based lithium adsorbent was effectively suppressed by the in situ intercalation of VO 3 − and V 2 O 7 4− into the interlayer of [LiAl 2 (OH) 6 ] + . Evidently, the initial adsorption capacity and α Mg Li $$ {\upalpha}_{\mathrm{Mg}}^{\mathrm{Li}} $$ of as-configured adsorbents powder are 14.96 mg g −1 and 192.42 in real sulfate-type West Taijinar Salt Lake brines following NaCl salts removal with 800 mg L −1 Li + and 9.56 g L −1 SO 4 2− . Furthermore, the initial and retained adsorption capacities of these novel adsorbents granulate in brines after 100 adsorption/desorption cycles are 26.68 and 10.36 mg g −1 , respectively, which are almost 10 times higher than those of industrially utilized products. Based on experiments and density functional theory calculations, the process and mechanism of anion intercalation control were preliminarily elucidated. Furthermore, research findings indicate that intercalated anions can influence not only interlayer interactions but also the backbone strength of LDH-type adsorbents. This work significantly overcomes the major utilization challenges of aluminum-based lithium adsorbents, thereby enabling the high-efficiency and stable extraction of Li + from low-grade brines, including sulfate-type brines.
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ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Fanyu Kong,Xiaodong He,Qianqian Liu,Xinxin Qi,Dongdong Sun,Yongting Zheng,Rongguo Wang,Yuelei Bai
Herein, a new nanocomposite was synthesized via in-situ growth of Fe 3 O 4 nanoparticles on MXene Ti 3 C 2 multilayer to improve the electrochemical performance of anodes by integrating the merits of transition metal oxide and Ti 3 C 2 , where further surface modification of Fe 3 O 4 @Ti 3 C 2 nanocomposites by carbon coating was introduced here. The nanocomposites exhibited excellent electrochemical performance in Li-ion storage when used as the anode materials, which benefited from the combination of the high capacity of magnetite and favorable electrical conductivity of Ti 3 C 2 . The optimized Fe 3 O 4 @Ti 3 C 2 -2.5 (a mass ratio of 1.1) showed a high reversible capacity of 342.9 mAh·g −1 at 1C, which exceeded the theoretical capacity of bare Ti 3 C 2 monolayer (320 mAh·g −1 ), and an impressive rate reversibility. TEM presented that the carbon layers were homogeneously coated on the surface of nanocomposites with a thickness of approximately 1 nm. The electrochemical measurement showed that C-coated Fe 3 O 4 @Ti 3 C 2 -2.5 presented enhanced cycling performance (382.9 mAh·g −1 at 1C and 236.7 mAh·g −1 at 5C) and cycling stability. This work presents a promising route for preparation of transition metal oxides@MXene nanocomposites as well as further surface modification for advanced Li-ion storage.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yipeng Yang,Yanting Ma,Kaineng Feng,Songsheng Zheng,Zhaolin Wang
Semi-solid electrolytes tend to inherit the advantages of both solid-state electrolytes and liquid electrolytes. However, the challenge is to simultaneously enhance both ionic conductivity, transference number and long cycle performance of batteries. In this study, a semi-solid electrolyte was successfully synthesized with a hollow structured metal organic framework (HMOF) and a polymer binder (PVDF). The hollow structure of HMOF serves as a framework to encapsulate a large amount of lithium salt and electrolyte, reducing concentration polarization in lithium metal batteries. Its unique pore structure and abundant hydroxyl functional groups can restrict anion movement, thereby increasing the Li-ion transference number. On the other hand, the PVDF acts as a binder, making the electrolyte thinner, more flexible, and easier to process for broader applications. Furthermore, a Li@HMOF semi-solid electrolyte (LHMSSE) was fabricated by adding Bis (trifluoromethane) sulfonimide lithium salt (LiTFSI) into the HMOF(Li@HMOF), which exhibits a high ionic conductivity of 0.89 mS cm −1 at 30 °C and a high Li-ion transference number of 0.75 at 30 °C. Notably, the Lithium symmetric battery of Li||LHMSSE ||Li can operate stably for over 1200 h at a current density of 0.2 mA cm −2 , and the lithium metal full battery of Li||LHMSSE||LFP (LiFePO 4 ) retains a capacity of 127.7 mAh g −1 after 2000 cycles at 1C, with a capacity retention rate of 89.1 % and an average coulombic efficiency of 99.9 %. When paired with high-load LFP (10 mg cm −2 ) or NCM811 (LiNi 0.8 Co 0.1 Mn 0.1 O 2 ) (10 mg cm −2 ) cathodes, a stable cycling performance can be achieved at a rate of 0.2C.
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高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Jiaqi Zhu,Dan Cai,Jingru Li,Xiuli Wang,Xinhui Xia,Changdong Gu,Jiangping Tu
Optimization of lithium metal anode is a pivotal part in facilitating the evolution of next-generation high energy density solid-state lithium metal batteries (LMBs). However, the practical application of lithium anode in solid-state LMBs is limited by uncontrollable dendrite growth and the poor interfacial contact with solid electrolyte. Herein, a 40 µm thin lithium composite anode based on the AlN-embedded reduced graphene oxide (rGO) scaffold synthesized via one-step molten lithium infusion is proposed. The resulting lithiophilic Li-Al alloy and high ion-conductive Li 3 N in situ constructed the lithium ion diffusing highways inside electrode, enabling a well-oriented Li deposition and effectively inhibiting the dendrite growth. Combined with in-situ polymerization and Li 3 N-modified solid electrolyte interphase (SEI), the composite anodes can prolong the lifespan of symmetric cell to 2100 h at 0.2 mA cm −2 /0.2 mAh cm −2 in carbonate-based solid polymer electrolytes. Moreover, LAG||LiFePO 4 full cells also excelled in cycling capability and rate performance. This modified electrode offers a promising synergistic solution for designing high-performance solid-state LMBs.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jie Zhou,Keying Cai,Tianci Zhou,Xiangfei Li,Yawen Li,Can Zhang,Zhuoyuan Zheng,Yusong Zhu
Li-dendrite growth and polysulfides shuttle are two core problems that restrict the applications of lithium-sulfur batteries (LSBs). Here, a double-layer-modified gel separator (DMS) is proposed to enable a shuttle-inhibition and dendrite-free quasi-solid-state LSB, where the polypropylene separator is sandwiched between an ultra-thin VS 2 layer (3 um) and a ceramic/polymer layer (6 um). On the cathode side, VS 2 layer can inhibit the polysulfides shuttle and boost their conversion kinetics. Meanwhile, on the anode side, the Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP)/PMMA/PVDF gel polymer electrolyte with the high-elastic-modulus and the homogenized Li-ion flux could effectively avoid dendrite growth. Last but not least, the quasi-solid-state LSB effectively prevents the evaporation of flammable ether-based electrolyte. Consequently, the quasi-solid-state-LSBs assembled with DMS show a high-capacity of 1197 mA h g −1 at 0.2 C and ultra-stable cycling performance over 800 cycles at 2 C with the decay rate of just 0.032% per cycle. Even with the high-sulfur-loading of 2.5 mg cm −2 , the LSB still delivers the high-capacity of 640.5 mA h g −1 at 2 C with stable cycling over 500 cycles. What's more, the assembled pouch cells still function properly even on the nail penetration and folding test, verifying the gel layer's integrity, and retention of electrochemical function under realistic conditions.
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CHEMPHYSCHEM
·
2025
·
IF 2.2
Yu Chen,Zhenghui Liu,Zheng Li,Yanlong Wang,Qi Liu,Minghui Feng
Achieving high metal leaching efficiency via regulation strategy is essential for minimizing raw material waste and reducing waste generation in hydrometallurgy. However, conventional approaches of tuning temperature and time frequently result in increased equipment corrosion and increased industrial costs. Therefore, recycling waste solid-state battery relies on the development of new tuning strategies. Here, a new strategy is developed to tune the leaching efficiency of metals by amino acid-based low-melting mixture solvents from lithium aluminum titanium phosphate Li 1.3 Al 0.3 Ti 1.7 P 3 O 12 (LATP) in all-solid-state lithium-ion batteries. This novel strategy demonstrates a more pronounced metal leaching efficiency, resulting in an increase in the highest Li leaching efficiency from 48.0% to 78.2%. In comparison, tunability by solvent types, temperature, and time on Li efficiency is less efficient, with Li efficiency only varying from 44.9% to 52.3%, 37.7% to 51.0%, and 36.8% to 56.3%, respectively. Graphical A new and sustainable strategy is developed to tune the recycling of solid electrolyte LATP by adjusting ternary components in the biodegradable and biocompatible amino acid-based low-melting mixture solvents, achieving a significant increase in Li leaching efficiency from 48.0% to 78.2%, indicating a 1.6-fold enhancement.
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Batteries & Supercaps
·
2024
·Vol. 7
·期 6
·e202400075
·
IF 5.1
Yuanyuan He,Jiawen Tang,Xiao Huang,Xin Ao,Bingbing Tian
Solid polymer electrolytes (SPEs) are considered a promising solution to the safety problems of lithium-ion batteries (LIBs) using liquid electrolytes. However, the high crystallinity and low ionic conductivity hinder the practical application of SPEs. Herein, we design a composite solid polymer electrolyte with a dual fast Li + conducting pathway in bulk and interface by incorporating highly Li + conductive ceramic Li 6.4 Ga 0.2 La 3 Zr 2 O 12 (LGLZO) in polyethylene oxide (PEO)/Li–bis (trifluoromethanesulfonyl) imide (LiTFSI) system. Compared to Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 (LLZTO), LGLZO provides better Li + conductivity; therefore, a fast Li + conducting pathway will form in the bulk of LGLZO nanofillers. Besides, LGLZO nanofiller accelerates the dissociation of LiTFSI and benefits the transfer of free Li + through the SPEs near the LGLZO surface, forming another interface fast Li + conducting pathway in the SPEs. Benefits from the dual fast Li + pathway design, the composite electrolyte membrane with 15 wt % LGLZO nanoparticles presents a high ionic conductivity of 8.0×10 −4 S cm −1 at 60 °C. The Li−Li symmetric cells with optimized content LGLZO show good cycling stability (no short circuit even after 1000 h), and the all–solid Li/LiFePO 4 batteries exhibit excellent cycling performance (remained 154 mAh g −1 after 500 cycles at 0.2 C under 60 °C). Graphical The PEO–based composite solid electrolyte containing LGLZO particles has constructed fast Li + conduction dual channels at the interface between LGLZO blocks and LGLZO and PEO, and has excellent electrochemical performance. In addition, the safe, reliable and low–cost synthesis method provides a favorable pathway for the modification of solid–state polymer electrolytes.
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ChemSusChem
·
2024
·Vol. 17
·期 24
·e202400840
·
IF 7.5
Ruojian Ma,Yaning Liu,Ruyi Fang,Jun Zhang,Ya-Hui Wang,Hui Huang,Yongping Gan,Xinping He,Xinhui Xia,Wenkui Zhang,Yang Xia,Sen Xin
Unfavorable parasitic reactions between the Ni-rich layered oxide cathode and the sulfide solid electrolyte have plagued the realization of all-solid-state rechargeable Li batteries. The accumulation of inactive by-products (P 2 S x , S, PO x n − and SO x n − ) at the cathode-sulfide interface impedes fast Li-ion transfer, which accounts for sluggish reaction kinetics and significant loss of cathode capacity. Herein, we proposed an easily scalable approach to stabilize the cathode electrochemistry via coating the cathode particles by a uniform, Li + -conductive plastic-crystal electrolyte nanolayer on their surface. The electrolyte, which simply consists of succinonitrile and Li bis(trifluoromethanesulphonyl)imide, serves as an interfacial buffer to effectively suppress the adverse phase transition in highly delithiated cathode materials, and the loss of lattice oxygen and generation of inactive oxygenated by-products at the cathode-sulfide interface. Consequently, an all-solid-state rechargeable Li battery with the modified cathode delivers high specific capacities of 168 mAh g −1 at 0.1 C and a high capacity retention >80 % after 100 cycles. Our work sheds new light on rational design of electrode-electrolyte interface for the next-generation high-energy batteries. Graphical A uniform plastic-crystal electrolyte nanolayer is coated onto the surface of Ni-rich oxide cathode particles and serves as a buffer to effectively suppress the adverse phase transition, loss of lattice oxygen and interfacial parasitic reactions with a sulfide solid electrolyte at highly delithiated cathode, which contributes improved electrochemical performance of an all-solid-stare rechargeable Li battery.
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RARE METALS
·
2024
·Vol. 43
·期 5
·2053-2066
·
IF 9.6
Lai Jia-Mei,Zou Zhi-Min,Bai Yu,Xing Yu-Tao,Jiang Chun-Hai
Surface modification of graphite anode with electroactive matters has been proven of a more practical strategy in enhancing the performance of Li-ion batteries than exploring alternative novel anode materials. Herein, rutile TiNbO 4− x nanoparticles with a tunnel structure are employed as multifunctional decoration substances in combination with a carbon coating layer to improve the rate and cycle properties of mesocarbon microbeads (MCMBs). As compared to pristine MCMB, the Li + diffusion coefficients of the composite anodes are enhanced due to the synergistic effect of TiNbO 4− x @C. Meanwhile, the overcharge and voltage polarization of the composite anodes at high rate are obviously minimized due to the current sharing effect of the high-potential TiNbO 4− x . Moreover, the amorphous Li y TiNbO 4− x converted from TiNbO 4− x in the initial lithiation process can deliver pseudocapacitive capacity to the composite anodes from the second cycle. All of these functions of TiNbO 4− x @C coating layer have directly contributed to the improved rate and cycle performance of the MCMB/TiNbO 4− x @C composite anodes. The one containing 12.0 wt% TiNbO 4− x exhibits a high reversible specific capacity of 118 mAh·g −1 at 10C (1C = 372 mA·g −1 ), together with a high capacity retention of 90.9% after 300 cycles at 3C, which are all much superior to those of pristine MCMB. Graphical abstract
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危险品化学品经营许可证（带存储）