Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 18
·10713-10725
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IF 10.7
Xiaoling Ye,Wencheng Liu,Yan Lu,Xiaoxiao Zheng,Yijian Bi,Min Zheng,Lei Han,Benqing Liu,Yafei Ning,Syed Hassan Mujtaba Jafri,Xinyu Zhao,Shangming He,Shilin Zhang,Hu Li
Li–CO2 batteries have emerged as a potential candidate for next-generation energy storage devices due to their impressive theoretical energy density and potential for CO2 capture. However, the practical application of these batteries faces a challenge due to the sluggish CO2 reduction reaction kinetics and Li2CO3 decomposition at the cathode. Herein, graphene nanoribbons decorated with Ru nanoparticles (GNR/Ru) as cathode catalysts are reported, where dispersed Ru nanoparticles on conductive graphene networks are effective in catalyzing CO2 reduction and Li2CO3 decomposition. As a result, the cathode using GNR/Ru catalysts demonstrates a high discharge capacity of 11 470 mA h g−1 at 100 mA g−1 and exhibits excellent long-term stability (more than 1240 hours) with a low overpotential of 1.34 V at a fixed capacity of 500 mA h g−1. This study provides new insights for exploring high-performance cathodic catalysts.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xingfu Zi,Hongming Wu,Jiling Song,Jiqiang Wu,Jianbing Guo
The hydroxyl groups on the surface of the cellulose-based gel polymer electrolyte lead to poor interfacial compatibility due to side reactions with lithium sheets. In this paper, a novel cellulose-based gel polymer electrolyte was prepared by uniformly coating the surface of a cellulose membrane with a nanohydrotalcite/PVDF-HFP composite using electrospinning technology. This cellulose-based gel polymer electrolyte exhibits good interfacial compatibility and excellent cycling stability (91.7% specific capacity retention after 500 cycles at 0.5C). Theory and experiments have shown that nanohydrotalcite on the surface of cellulose membrane can effectively prevent the contact of hydroxyl groups with lithium sheets to reduce the side reactions. In addition, nanohydrotalcite can also act as a Li+ transport redistributor to facilitate the uniform deposition of Li+ and reduce the formation of lithium dendrites to extend the cycle life.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Dan Li,Fu Sun,Yuqing Zhang,Yulong Liu,Hao Sun,Haiming Xie,Jia Liu,Seung-Taek Myung,Jiefang Zhu
In situ characterization on interface stability has been hardly tried in redox mediator (RM)-involved Li-O 2 battery thus far. Here, benzyltriethylammonium iodide (BTEAI) can act as a self-defensive RM in the electrolyte LiTFSI/TEGDME to enhance the reaction kinetics and increase the cycling stability by suppressing the redox shuttling. I - effectively reduces the charging overpotential by changing decomposition route for Li 2 O 2. BTEA + can facilitate LiTFSI decomposition in the electrolyte, and participate in formation of an organic–inorganic composite SEI-contained layer on Li anode. Moreover, for the first time, non-destructive synchrotron X-Ray tomography is used to investigate the mechanism of suppressing shuttle effect by monitoring the morphological evolution of electrodes interface. This work provides an insight into the development of functional RM and in situ protection strategies for Li anodes in Li-O 2 batteries.
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ChemElectroChem
·
2025
·
IF 3.5
Haoshen Huang,Huafeng Zhou,Nuowen Wu,Haiyang Yu,Weibo Gao,Jianghuan Shi,Jiahao Song,Yayun Zheng,Zhengfei Chen,Zixuan Liu
Graphical A simple carbon black (Ketjenblack, KB)-multiwall carbon nanotubes (MWCNTs) composite was fabricated and used as the air cathode in a Li-O 2 battery, achieving significantly improved specific capacity (up to 10611 mAh/g carbon ), rate capability and cyclability than pristine KB, owing to the synergy of KB's abundant surface area for accommodation of discharge products and MWCNTs’ long-range electronic conductivity. A simple carbon black (Ketjenblack, KB)-multiwall carbon nanotubes (MWCNTs) composite was fabricated and used as the air cathode in a Li-O 2 battery where MWCNTs primarily serve as microscopic cables to enhance long-range electronic conductivity. With optimal KB:MWCNTs mass ratios, the composite exhibited significantly improved specific capacity (up to 10611 mAh/g carbon under 100 mAh/g carbon ), rate capability (up to 9598 mAh/g carbon under 500 mAh/g carbon ) and cyclability than pristine KB, owing to the synergy of KB's abundant surface area for accommodation of discharge products and MWCNTs’ long-range electronic conductivity to guide even and compact deposition of discharge products, and mitigate passivation/clogging of the air cathode surface during discharge. This strategy of using MWCNTs as microscopic cables could also be applied for other commercial materials to construct high-performance and low-cost air cathodes.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Yunhao Li,Wu Kuang,Haijun Yu,Dandan Liu,Yanfang Liu,Guodong Kang,Xinmiao Liang,Yiming Cao
Efficient separation of monovalent/multivalent cations and anions is essential for optimizing lithium extraction from Salt-Lake to simplify production processes and reduces costs. Nevertheless, the conventional nanofiltration membranes with specific charges can only separate either cations or anions. To overcome this limitation, a novel strategy is proposed for fabricating nanofiltration membranes with “negative-positive-negative” sandwich-like mixed charge configuration. Herein, two aqueous monomers (phenylbiguanide and polyethyleneimine) with significantly different diffusion rates are employed to react with trimesoyl chloride to form a nascent polyamide layer via interfacial polymerization. Subsequently, phenylbiguanide that preferentially diffuses to top surface of nascent membrane and unreacted amine groups from polyethyleneimine are used to react with m -phenylenedisulfonyl chloride to form a polysulfonamide/polyamide functional layer. The unreacted sulfonyl chloride groups and trimesoyl chloride near aqueous phase could hydrolyzes more easily, producing negatively charged sulfonic acid and carboxyl groups on the top and bottom. Meanwhile, the main part of polyamide layer is positively charged attributed to numerous unreacted amine groups. The “negative-positive-negative” sandwich-like configuration was proven using TOF-SIMS. The fabricated membrane exhibited a selectivity of 57.22 for MgCl 2 /LiCl and 30.61 for Na 2 SO 4 /NaCl. Furthermore, Mg 2+ /Li + selectivity of 57.34 was achived for the mixed salt solution (Mg 2+ /Li + = 45), showing good application potential in lithium extraction.
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ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 19
·2000613
·
IF 16.836
Yusen He,Mingjun Li,Yongguang Zhang,Zhenzhen Shan,Yan Zhao,Jingde Li,Guihua Liu,Chunyong Liang,Zhumabay Bakenov,Qiang Li
The main obstacles that hinder the development of efficient lithium sulfur (Li–S) batteries are the polysulfide shuttling effect in sulfur cathode and the uncontrollable growth of dendritic Li in the anode. An all-purpose flexible electrode that can be used both in sulfur cathode and Li metal anode is reported, and its application in wearable and portable storage electronic devices is demonstrated. The flexible electrode consists of a bimetallic CoNi nanoparticle-embedded porous conductive scaffold with multiple Co/Ni-N active sites (CoNi@PNCFs). Both experimental and theoretical analysis show that, when used as the cathode, the CoNi and Co/Ni-N active sites implanted on the porous CoNi@PNCFs significantly promote chemical immobilization toward soluble lithium polysulfides and their rapid conversion into insoluble Li 2 S, and therefore effectively mitigates the polysulfide shuttling effect. Additionally, a 3D matrix constructed with porous carbonous skeleton and multiple active centers successfully induces homogenous Li growth, realizing a dendrite-free Li metal anode. A Li–S battery assembled with S/CoNi@PNCFs cathode and Li/CoNi@PNCFs anode exhibits a high reversible specific capacity of 785 mAh g −1 and long cycle performance at 5 C (capacity fading rate of 0.016% over 1500 cycles).
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ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 31
·期 6
·2006159
·
IF 16.836
Yuxin Zheng,Shuixin Xia,Fei Dong,Hao Sun,Yuepeng Pang,Junhe Yang,Yizhong Huang,Shiyou Zheng
Advanced high-energy-density energy storage systems with high safety are desperately demanded to power electric vehicles and smart grids. Li metal batteries (LMBs) can provide a considerable leap in battery energy. Nevertheless, the widespread deployment of Li metal has long been fettered by the unstable solid electrolyte interlayer and uncontrolled Li dendrite growth induced safety concerns. Herein, a flexible and conformal CTF-LiI coating has been rationally coated on Li metal surface to stabilize metallic Li. With the CTF-LiI coating, the Li electrodeposition exhibits a uniform, dense, and dendrite-free manner; however, the side reactions between metallic Li and electrolyte have been effectively suppressed. The Li symmetric cells can run stably for a prolonged cycling over 2500 cycles at 10 mA cm −2 , demonstrating a much lower voltage hysteresis. In addition, the Li|Li 4 Ti 5 O 12 cells can deliver an improved long-time cycling over 250 cycles at 0.05 A g −1 . Furthermore, the half cells paired with the organic S cathode also demonstrate an excellent long lifespan stable cycling and a high capacity of 682.2 mAh g −1 retained over 300 cycles with an average capacity decay of ≈0.05% per cycle at 1.0 A g −1 . This work demonstrates a significant step toward large-scalable and long-cycling stable LMBs.
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NANOTECHNOLOGY
·
2025
·Vol. 36
·期 13
·135402
·
IF 2.8
Yao He,Lijing Wang,Sheng Yang,Shaowei Zhang,Hongfang Du,Dandan Cui,Liangxu Lin
In lithium–sulfur batteries (LSBs), the dissolution of lithium polysulfides (LiPSs) triggers the shuttle effect to lose active materials irreversibly, leading to the fast deterioration of electrochemical performance. Rational designs on the separator membrane could mitigate the shuttle effect. However, the development of efficient separators economically remains a challenging task, aggressively limiting the commercial use of LSBs. This work reports the engineering of commercial molybdenum diselenides (MoSe2) flakes to mitigate the shuttle effect of LSBs, by forming rich Se vacancies via a potassium (K) intercalation and de-intercalation reaction. The Se vacancy in MoSex flakes significantly enhances the adsorption capacity of LiPSs and accelerates the Li+ diffusion kinetics, thereby alleviating the shuttle effect and enhancing the energy storage performance. This directly improves the energy storage performance of the LSBs by incorporating the MoSex flakes into the separator membrane, giving a high capacity retention rate of 94.6% at 2 C after 500 cycles, with a reversible specific capacity as high as 452 mAh g−1. This work offers a new strategy for the design and synthesis of vacancy rich transition metal chalcogenides for high-performance LSBs and beyond.
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PLoS One
·
2024
·Vol. 19
·期 4
·e0297677
·
IF 2.9
Liping Zhao,Ye Zhao,Lihe Zhao,Gang Liu
A nitrogen-phosphorus dual-doped porous spore carbon (NP-PSC) positive electrode matrix was prepared using native auricularia auricula as solid medium based on the principle of biomass rot. Yeast was introduce and cultured by the auricularia auricula solid medium. The freeze-drying and carbonization activation processes made the materials present a three-dimensional porous spore carbon aerogel properties. Yeast fermentation transformed auricularia auricula from blocky structure to porous structure and introduced nitrogen-phosphorus dual-doping. The physical and chemical properties of the prepared materials were characterized in detail. Electrochemical performance of NP-PSC in Li-S batteries was systematically investigated. Porous structure and heteroatom-doping improved the electrochemical performance, which is much superior to conventional activated carbon materials.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Hao Xu,Shuai Liu,Zhiang Li,Fan Ding,Ting Wang,Ting Liu,Weimin Wang,Kaikai Song,Jie Liu,Lina Hu
Succinonitrile has shown significant promise for application in polymer electrolytes for solid-state lithium metal batteries due to its high ionic conductivity at low-temperature. However, the use of Succinonitrile is limited due to its corrosion of Li metal. Herein, we report a solid polymer electrolyte with high ionic conductivity (2.17 × 10 −3 S cm −1 , 35 °C) enhanced by Ti 3 C 2 T x . Corrosion of the Li anode is prevented due to the Succinonitrile molecules being efficiently anchored by Ti 3 C 2 T x . Meanwhile, the coordination environment of Li + is weakened due to the introduction of competitive coordination induction effects into the polymer electrolyte, resulting in efficient Li + conduction. Furthermore, the mechanical properties of the electrolyte are enhanced by modulating the ratio of Ti 3 C 2 T x to suppress the growth of Li dendrites. Therefore, Li||Li symmetric batteries deliver stable cycling up to 8000 h at 28 °C. LiFePO 4 ||Li full batteries exhibit excellent cycling stability of 151.7 mAh g −1 with a capacity retention of 99.3% after 300 cycles. This work not only presents a new idea to suppress the corrosion of the Li anode by Succinonitrile but also provides a simple, feasible, and scalable strategy for high-performance Li metal batteries.
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Journal of Materials Chemistry A
·
2024
·
IF 10.7
Zhedong Liu,Cuihua Zeng,Jingchao Zhang,Jiawei Luo,Zhaoxin Guo,Zekun Li,Rui Liu,Wei-Di Liu,Jia Ding,Yanan Chen,Wenbin Hu
Li-rich cathode materials are one of the most potential candidates for next-generation Li-ion batteries. However, they suffer from severe capacity degradation because of cracks and the continuous structural transformation during cycling. Defect engineering can effectively tune the electronic and crystal structure of nanomaterials and improve the electrochemical performance of cathode materials. Up to now, it is challenging to introduce dense defects into the materials synthesized by conventional tube furnace calcination due to the thermodynamic and kinetic equilibrium. In this work, a non-equilibrium high temperature shock (HTS) strategy with ultra-fast cooling, accompanied by the processes of rapid heating and cooling, is reported to introduce the twin boundaries (TBs) into the Li1.2Ni0.13Co0.13Mn0.54O2. The rock-salt phase along the TBs acts as a rigid framework that mitigates the inherent phase transformation of Li-rich layered-oxide materials during cycling. Benefiting from the unique structure, Li1.2Ni0.13Co0.13Mn0.54O2 prepared by HTS method exhibits a superior reversible capacity of 278 mAh g-1 at 0.1 C, a high initial Coulombic efficiency of 81%, and capacity retention of 89.4% after 100 cycles at 0.5 C. This work exerts profound implications on understanding defect engineering for modulating structure and electrochemical performance of materials.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yameng Jiang,Rongrong Liu,Mingjie Liu,Wenbo Ye,Baojian Liu,Qiwei Yang,Zongbi Bao,Qilong Ren,Zhiguo Zhang
H 2 TiO 3 (HTO), recognized as a promising lithium-ion sieve, encounters significant challenges related to slow kinetics and particle agglomeration that hinder its industrial applicability. This study aims to mitigate these limitations by employing a dual-modification strategy that integrates rare-earth doping and hydrogel immobilization. Specifically, yttrium doping was found to induce lattice expansion in HTO, thereby broadening lithium ion (Li + ) diffusion channels and enhancing hydrophilicity, as evidenced by a reduction in contact angle from 31.8° to 17.4°. The modified yttrium-doped HTO (Y-HTO) was further incorporated into a semi-interpenetrating poly(vinyl alcohol)/poly(2-fluoroacrylic acid) (PVA/PFAA) hydrogel through UV-initiated in-situ polymerization. The PFAA component provided fluorine-mediated coordination sites and carboxyl-driven electrostatic gradients, which synergistically accelerated Li + transport. Concurrently, PVA facilitated the formation of hydrogen-bonded networks that immobilized Y-HTO particles and ensured mechanical robustness. The optimized Y-HTO-PVA/PFAA-30 % composite demonstrated a maximum Li + adsorption capacity of 52.36 mg·g −1 at pH 10. Cyclic tests exhibited a remarkable capacity retention of 89.5 % after 10 adsorption–desorption cycles with minimal Ti loss (0.26 %). This innovative strategy offers a sustainable solution for lithium extraction from high-salinity brines.
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