Journal of Energy Chemistry
·
2019
·
IF 5.162
Syed Danish Ali Zaidi,Chong Wang,Qinjun Shao,Jing Gao,Shengdong Zhu,Haifeng Yuan,Jian Chen
A separator film for high-performance Li-ion batteries was prepared by electrospinning. The film had a hybrid morphology of silica nanofibers (SNFs) and alumina nanoparticles (ANPs), with a smooth surface, polymer-free composition, high porosity (79%), high electrolyte uptake (876%), and excellent thermal stability. Contact angle measurements demonstrated the better immersion capability of the SNF-ANP separator film for commercial liquid electrolytes than a commercial CELGARD 2500 separator film. Moreover, compared to the commercial CELGARD 2500 separator, the ionic conductivity of the SNF-ANP separator film was nearly three times higher, the bulk resistance was lower at elevated temperature (120 °C), the interfacial resistance with lithium metal was lower, and the electrochemical window was wider. Full cells were fabricated to determine the cell performance at room temperature. The specific capacity of the full cell with the SNF-ANP separator film was 165 mAh g −1 ; the cell was stable for 100 charge/discharge cycles and exhibited a capacity retention of 99.9%. Notably, the electrospun SNF-ANP separator film can be safely used in Li-ion or Li-S rechargeable batteries.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Chuang-Chao Sun,You-Zhi Song,Yan Yan,Jia-Jia Yuan,Zheng Huang,Li-Feng Fang,Bao-Ku Zhu
Lithium−sulfur (Li−S) batteries are of great interest in next-generation flexible electronic devices for their much higher energy density. However, current Li−S batteries are still facing the problem about rational construction of the flexible power sources. Herein, a novel flexible and integrated electrode is fabricated through a non-solvent induced phase separation (NIPS) method with poly(m-phenylene isophthalamide) (PMIA) as the flexible support for Li-S batteries. Notably, the integrated electrode shows the capability of adapting the volume expansion of cathode materials, inhibiting the diffusion of lithium polysulfides and suppressing the dendrite growth of Li. As a result, battery assembled with the fabricated electrode exhibits a capacity of 773.6 mAh g −1 at 1 C. After 600 cycles, the capacity still remains at 565.5 mAh g −1 with the calculated capacity fade of 0.045% per cycle. This proposed strategy is advanced and feasible, which has great potential in next-generation portable electronic devices.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Ao Li,Binfang He,Guangchao Jin,Dongmei Liu,Jingbo Chen
Li-rich manganese-based cathode material is expected to be extremely promising for next-generation lithium-ion batteries due to its high specific capacity derived from additional anion redox behavior and low cost of the main element manganese. However, the irreversible release of lattice oxygen results in poor structural stability and inferior electrochemical performances , such as low initial Coulomb efficiency, irreversible capacity decay and serious voltage decay, which limits its commercialization. Herein, a simple strategy to improve the structural stability and electrochemical performances by one-step treatment with triethylamine (TEA) at moderate temperature is reported. TEA was used as a surface treatment reagent to prepare the modified Li-rich manganese-based cathode materials with oxygen vacancies and local structural distortion on the surface. The presence of surface distortion layer and oxygen vacancies inhibits irreversible oxygen release. The result exhibits that initial Coulomb efficiency, rate performance and initial discharge specific capacities are improved. After 100 cycles at a current density of 1 C, the specific capacity of the surface-treated material is 204.3 mAh g -1 (172.6 mAh g -1 for the pristine material), with a capacity retention of 81.26%. Even at a high current density of 10 C, the discharge specific capacity of 139.4 mAh g -1 is still achieved, demonstrating the excellent electrochemical performance. This study provides a simple and effective strategy for constructing special surface structures on Li-rich manganese-based materials to achieve high performance.
研究领域:
材料科学
·
电化学
·
能源存储
·
锂离子电池
·
固态化学
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高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Minghao Sun,Haoxiang Zhong,Shuren Jiao,Hanqi Shao,Lingzhi Zhang
Carboxymethyl chitosan (C-CTS) was firstly reported as a water soluble binder for LiFePO 4 cathode in Li-ion batteries. The electrochemical performances of LiFePO 4 cathode with C-CTS binder was investigated and compared with the conventional water-soluble sodium carboxymethyl cellulose (CMC) and the commercial non-aqueous polyvinylidene difluoride (PVDF). LiFePO 4 cathode with C-CTS exhibited a comparable cycling performance, but better rate capability than that of CMC and PVDF, retaining 65% capacity of C/5 at 5 C rate as compared with 55.9% and 39.4% for CMC and PVDF, respectively. In addition, LiFePO 4 cathode with C-CTS exhibited excellent cycling performance at 60 °C, retaining 91.8%/62.1% capacity after 80 cycles at 1 C/10 C, respectively.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子化学
·
电池技术
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DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Xuexia Lan,Xingyu Xiong,Jie Cui,Renzong Hu
In the past two decades, a lot of high-capacity conversion-type metal oxides have been intensively studied as alternative anode materials for Li-ion batteries with higher energy density. Unfortunately, their large voltage hysteresis (0.8–1.2 V) within reversed conversion reactions results in huge round-trip inefficiencies and thus lower energy efficiency (50%–75%) in full cells than those with graphite anodes. This remains a long-term open question and has been the most serious drawback toward application of metal oxide anodes. Here we clarify the origins of voltage hysteresis in the typical SnO 2 anode and propose a universal strategy to minimize it. With the established in situ phosphating to generate metal phosphates during reversed conversion reactions in synergy with boosted reaction kinetics by the added P and Mo, the huge voltage hysteresis of 0.9 V in SnO 2 , SnO 2 -Mo, and 0.6 V in SnO 2 -P anodes is minimized to 0.3 V in a ternary SnO 2 -Mo-P (SOMP) composite, along with stable high capacity of 936 mA h g −1 after 800 cycles. The small voltage hysteresis can remain stable even the SOMP anode operated at high current rate of 10 A g −1 and wide-range temperatures from 60 to −30 °C, resulting in a high energy efficiency of 88.5% in full cells. This effective strategy to minimize voltage hysteresis has also been demonstrated in Fe 2 O 3 , Co 3 O 4 -basded conversion-type anodes. This work provides important guidance to advance the high-capacity metal oxide anodes from laboratory to industrialization.
研究领域:
电化学
·
材料科学
·
能源存储
·
纳米材料
·
固态化学
·
电池技术
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Junbao Lai,Kaibo Fan,Pengwei Zhou,Yanmin Zhou,Hao Tang,Guiping Dai,Gaixia Zhang,Long Tan
In addition to the Li + transport kinetics, the interface stability of the solid-state electrolyte is also critical for solid-state Li-metal batteries (SLMBs), especially for nickel-rich cathode-based ones. Herein, we develop an air-processable composite polymer electrolyte (CPE) using polyvinylidene difluoride (PVDF) as matrix, LiCF 3 SO 3 as Li-salt, Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 as fast Li-conductor and C 4 BLiO 8 (LiBOB) as additive. The presence of LiBOB suppress the defluorination reaction of PVDF in electrolyte solution , that reduce the corrosion reaction on LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) particles and enhance the intermolecular interactions between [Li(DMF) x ] + and PVDF as well. Importantly, the formed H 3 BO 3 in CPE induce the in situ passivation of Li-B-O/B-O on surface of NCM811 and Li-metal, which impedes the crack of NCM811 particles and growth of Li-dendrites. Thus, NCM811/Li battery exhibits a high specific capacity up to 196.1 mAh g −1 (0.1C) and excellent long-term stability. Specifically, a capacity retention rate of 71.8 % (134.5/181.1 mAh g −1 ) and 78.7 % (132.1/167.9 mAh g −1 ) has been achieved at 0.2C and 0.5C after 500 cycles, respectively, which represent one of the best performances in the field. This strategy also greatly enhance the cyclic stability of LiFePO 4 /Li battery, which shows a capacity retention rate of 92 % (143.5 mAh g −1 ) after 700 cycles.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
·
聚合物电解质
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 11
·990
·
IF 2.8
Liu Hongmei
The high energy density made lithium–sulfur batteries as the most promising energy storage devices. However, the poor cycle stability, which results from the severe polysulfide migration during the electrochemical cycles, inhibited the wide application of lithium–sulfur batteries. It has been proved that inhibiting the polysulfide shuttle effect and accelerating the polysulfide conversion could enhance the electrochemical performance of sulfur cathodes. Herein, hierarchically porous carbon/titanium dioxide (HPC/TD) composites are designed as sulfur host to adsorb the polysulfide and accelerate the redox conversion during cycling. Therefore, the polysulfide migration is effectively inhibited. The developed HPC/TD@S cathodes exhibit initial high capacity of 1256 mAh/g at 0.1 C. These results confirm that the accelerated redox conversion of polysulfide is beneficial for improving the electrochemical performance of Li–S batteries.
研究领域:
储能
·
材料科学
·
电化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jiechen Song,Yuxing Xu,Yuncheng Zhou,Pengfei Wang,Hailan Feng,Jun Yang,Fuchang Zhuge,Qiangqiang Tan
In the field of solid-state lithium metal batteries (SSLMBs), constructing vertically heterostructured poly(ethylene oxide) (PEO)-based solid electrolytes is an effective method to realize their tight contact with cathodes and Li anodes at the same time. Succinonitrile (SN) has been widely used in PEO-based solid electrolytes to improve the interface contact with cathodes, enhance the ionic conductivities, and obtain a high electrochemical stability window of PEO, but its application is still hindered by its intrinsic instability to Li anodes, which results in corrosion and side interactions with lithium metal. Herein, the cellulose membrane (CM) is introduced creatively into the vertically heterostructured PEO-based solid electrolytes to match the PEO-SN solid electrolytes at the cathode side. With the advantage of the interaction between −OH groups of CM and −C≡N groups in SN, the movement of free SN molecules from cathodes to Li anodes is limited effectively, resulting in a stable and durable SEI layer. In specific, the Li||LiFePO4 battery with the CM-assisted vertically heterostructured PEO-based solid electrolyte by in situ preparation delivers a discharge capacity of around 130 mAh g–1 after 300 cycles and capacity retention of 95% after 500 cycles at 0.5 C. Our work provides a solution to construct PEO-based solid electrolytes feasible to match cathodes and Li anodes effectively by intimate contact with electrodes.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
·
聚合物电解质
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·Vol. 46
·期 3
·3242-3249
·
IF 3.45
Shiqiang Cui,Sanming Chen,Libo Deng
Silicon has been widely researched as next-generation lithium-ion batteries (LIBs) anodes on account of its high energy density . To solve the large volume expansion and low electroconductivity , carbon coating Si strategies have been developed and shown some progress. In this study, Si nanoparticles were injected into the inner of the double-deck carbon nanotubes for the formation of a sandwich-like structure to enhance the electrochemical properties of Si electrodes. Thereinto, carbon nanotube arrays (CNTs) were fabricated by liquid paraffin as the carbon resource instead of unsaturated hydrocarbon for the first time by chemical vapor deposition (CVD) method. Due to the advantage of the specific structure designed, the as-prepared material shows superior rate performance and excellent cycling stability with high capacity retention (1310 mAh g −1 at 0.1 A g −1 after 100 cycles and 1050 mAh g −1 at 1 A g −1 after 500 cycles with 98% of Coulombic efficiency). Furthermore, the full cell was also assembled with LiFePO 4 as the cathode and manifested a high energy density of 374 Whkg −1 with stable cycling performances (92% capacity retention ratio after 200 cycles).
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
电池技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Huang Xing-Wen,Chen Yi-Zhao,Hu Jin-Hong,Liao Song-Yi,Li Yue-Zhu,Liu Rong-Tao,Liu Yi-Dong,Li Shi-dong,Min Yong-Gang
Traditional lithium-ion batteries suffer from poor cycle and rate performance due to low structural stability and the sluggish charge transfer kinetics of cathode during the lithiation and delithiation processes. Polyimide (PI) electrode, known for high theoretical capacity, structural tunability, inherent safety feature and sustainability, have garnered significant attention, offering a promising solution in addressing these issues. Nevertheless, the intrinsic insulation characteristic restricts the capacity of PI material. The emergence of two-dimensional layered Ti 3 C 2 T x MXene with low charge transfer resistance and high electrocatalytic activity is highly suitable for enhancing the electrochemical performance of PI. Therefore, integrating PI with few-layered MXene would combine PI’s abundant redox-active sites with MXene’s excellent conductivity, creating a robust electrode with high capacity, ultrafast kinetics, and cycle durability. Based on this strategy, the hybrid material composed of naphthalene-based PI (NPI) with stable molecular structure and few-layered MXene, denoted as NPI@MXene, has been successfully designed and fabricated through the eco-friendly solid-state polycondensation approach. By adjusting the feed ratio of reactants, the hybrid electrode with 10 wt% MXene (NPI@10%MXene) demonstrates the layer-plus-island-like stable structure and good interaction between NPI and MXene, which delivers the highest rate capacity. Even subjected to a high-current density of 8 A g −1 , the NPI@10%MXene composite maintains 74% (~ 84 mAh g −1 ) of its initial capacity. It also exhibits long-life cycling stability with ~ 77% retention after 5000 cycles (1 A g −1 ). Moreover, the NPI@10%MXene composite reveals enhanced capacitive effect and fast Li + diffusion coefficient during the discharge/charge process (1.43 × 10 –9 /1.43 × 10 –9 cm 2 s −1 , respectively), outperforming those of pristine NPI. The above experimental results highlight remarkable potential of NPI@10%MXene for application in ultrafast Li + storage. Thus, NPI@10%MXene cathode offers a viable strategy to reconcile rapid electrochemical reaction with long-term stability in sustainable rechargeable batteries.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zhuo Tan,Baoling Chu,Chenguang Wang,Jing Tian,Yi Nie,Hongshuai Gao
Efficient recovery and high-value utilization of keratin from waste human hair are of significant interest for sustainable materials development. However, the densely cross-linked disulfide bonds and extensive hydrogen-bond network of keratin make its mild and efficient extraction challenging. In this work, a redox-active deep eutectic solvent (DES) composed of L-cysteine (L-Cys) and monoethanolamine (MEA) was developed for keratin recovery from waste human hair. Under optimized conditions of 80 °C, 3.5 h, and 10 wt% solid loading, the keratin recovery yield reached 96.5%, and the solvent maintained stable performance over five recycling cycles. Experimental results, together with DFT and MD simulations, indicate that the dissolution process is driven by synergistic disulfide bond cleavage and disruption of the hydrogen-bond network, while the protein backbone remains largely intact. The recovered keratin was further phosphorylated and co-regenerated with cellulose to fabricate a phosphorylated keratin/cellulose composite membrane (P-KCM). The membrane exhibited efficient and selective Fe 3+ adsorption, with a maximum adsorption capacity of 297.8 mg·g −1 . FT-IR and XPS analyses reveal that phosphate groups serve as the primary coordination sites for Fe 3+ . In tests with real LiFePO₄ leachate, P-KCM removed 97.3% of Fe 3+ while leaving 80.1% of Li + in solution, and it retained 84.7% of its initial adsorption capacity after four adsorption-desorption cycles. This work provides a mild, efficient, and recyclable strategy for keratin valorization and offers a feasible approach for selective metal ion separation and pre-treatment in battery recycling.
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Cuijing Liu,Bo He,Lei Li,Mengtian Bai,Zhangji Fan,Jiangfeng Song,Linbo Li,Xihong He,Hideto Matsuyama
Covalent organic frameworks (COFs) are promising candidates for fabricating ion-selective membranes towards Li + extraction from brines. However, most COF membranes feature nanoscale pores, limiting their capability to sieve angstrom-sized ions. Herein, a DG-TBB membrane with angstrom-sized, lithiophilic and positive channels was fabricated via the condensation of a small, positively charged amine (1,3-diaminoguanidine monohydrochloride, DG) with an aldehyde containing lithiophilic groups (2,4,6-trimethoxy-1,3,5-benzenetricarbaldehyde, TBB). For comparison, the DG-TFB membrane based on 1,3,5-triformylbenzene (TFB) without lithiophilic groups was adopted to clarify the role of Li + -affinitive sites, while the ODH-TBB membrane containing neutral oxalyl dihydrazide (ODH) was employed to evaluate charge effect. Benefiting from the synergistic effects of Li + affinity and Donnan exclusion, DG-TBB membrane delivered the highest Li + permeation rate of 73.6 mmol m −2 h −1 and Li + /Mg 2+ selectivity of 1200, which were superior to DG-TFB (4.3 mmol m −2 h −1 , selectivity of 238) and ODH-TBB (64.9 mmol m −2 h −1 , selectivity of 39). Moreover, DG-TBB exhibited robust separation performance in diverse practical scenarios and for various mono-/divalent cations. This study demonstrates that the rational integration of angstrom-sized pores, lithiophilicity and positive charge into COF channels enables highly efficient ion separation.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）