CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhixiang Meng,Meiling Wang,Xun Cao,Tian Wang,Yongchao Wang,Yike Xu,Weifeng Liu,Lin Chen,Yizhong Huang,Xuguang Liu
Li + ion-sieve (LIS) films, foams, or granules have been fabricated to immobilize LIS to overcome powder loss for Li extraction from seawater. However, the practical application is still restricted by their low swelling ability and poor flexibility to withstand harsh marine environment for a long time. Here, a highly elastic interconnected porous LIS nanocomposite hydrogel with tunable pore structure and flexibility, as well as good swelling property, is prepared by using LIS (viz. λ-MnO 2 ) as a pore self-modifier during the in-situ fabrication of polypyrrole (PPy) and polyvinyl alcohol (PVA) interpenetrating hydrogel (denoted as λ-MnO 2 @IG). In addition to physical confinement interactions, the strong coordination/chelation and electrostatic interactions between λ-MnO 2 nanoparticles and polymer chains enable well-dispersed λ-MnO 2 nanoparticles to be confined in a rich network structure. Even at a marine environment (pH 8.3), the λ-MnO 2 @IG hydrogel exhibits superior Li + adsorption performance (20.6 mg g −1 HMO), outperforming most adsorbents containing LIS. Specially, the porous hydrogel is easily recyclable and exhibits super-stable cyclic Li extraction performance, which are directly attributable to the further-improved pore structure in continuous regeneration process. This study provides a self-regulating strategy to design LIS porous hydrogels with controllable porosity, high flexibility, good swelling ability, and excellent cycle stability to address the growing Li + demanding challenges.
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DOI
高影响因子
Advanced Science
·
2021
·Vol. 9
·期 3
·2104205
·
IF 16.806
Suya Zhou,Shuo Yang,Dong Cai,Ce Liang,Shuang Yu,Yue Hu,Huagui Nie,Zhi Yang
Lithium–sulfur batteries possess high theoretical energy density but suffer from rapid capacity fade due to the shuttling and sluggish conversion of polysulfides. Aiming at these problems, a biomimetic design of cofactor-assisted artificial enzyme catalyst, melamine (MM) crosslinked hemin on carboxylated carbon nanotubes (CNTs) (i.e., [CNTs–MM–hemin]), is presented to efficiently convert polysulfides. The MM cofactors bind with the hemin artificial enzymes and CNT conductive substrates through FeN 5 coordination and/or covalent amide bonds to provide high and durable catalytic activity for polysulfide conversions, while π – π conjugations between hemin and CNTs and multiple Li-bond networks offered by MM endow the cathode with good electronic/Li + transmission ability. This synergistic mechanism enables rapid sulfur reaction kinetics, alleviated polysulfide shuttling, and an ultralow (<1.3%) loss of hemin active sites in electrolyte, which is ≈60 times lower than those of noncovalent crosslinked samples. As a result, the Li–S battery using [CNTs–MM–hemin] cathode retains a capacity of 571 mAh g −1 after 900 cycles at 1C with an ultralow capacity decay rate of 0.046% per cycle. Even under raising sulfur loadings up to 7.5 mg cm −2 , the cathode still can steadily run 110 cycles with a capacity retention of 83%.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Haolin Hu,Yuelin Wang,Yue Xu,Liangxiao Jin,Samuel Jeong,Xinfu Xie,Chengqian Xiong,Bojun Zhou,Wenping Sun,Jialiang Zhang,Xi Lin,Kailong Hu
Upcycling retired lithium-ion batteries (LIBs) into value-added electrocatalysts represents a promising strategy for tuning the trash into treasure. Herein, an effective approach is reported to convert the LIB anode residues into electrocatalysts that enhance the oxygen reduction reaction (ORR). The residues are utilized for synthesizing reduced graphene oxides (rGO) with Mn nanoparticles anchored by N and S dopants (Mn/NS-rGO). A Pt/C-comparable ORR performance is achieved in alkaline media, with the onset and half-wave potentials of 1.01 and 0.87 V, as well as the excellent durability. Density functional theory (DFT) calculations reveal that Mn sites, coordinating with N and S dopants, simultaneously optimize the intermediate adsorption and charge distribution, which in turn facilitates ORR. The solid-state Al-air batteries are assembled by using Mn/NS-rGO as the cathode catalyst, showing the power density of 103.8 mW cm − 2 , which successfully charge a cell phone and power LED lights under flexible working conditions.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Jiacheng Xiao,Yuqing Liu,Jiarui Wang,Zexin Mo,Chenyu Liu,Zhan Lin,Dong Luo
Lithium-rich manganese-based cathode materials, represented as xLi 2 MnO 3 ·(1-x)LiMO 2 (M = Ni, Co, or Mn), exhibit high specific capacity and low cost, making them promising candidates for next-generation high-energy-density lithium-ion battery cathodes. However, the low covalency of the Li–O–Li configuration renders these cathode materials highly susceptible to irreversible oxygen release and structural evolution, leading to severe voltage and capacity degradation, which hinders their practical application. To address this issue, this study employs a Ba/Ti co-doping strategy to modulate the oxygen electron and reinforce the structure of lithium-rich manganese-based cathode materials. Post-cycling results indicate that Ti/Ba co-doping effectively suppresses electrolyte corrosion and surface/interface reactions, improves the reversibility of O-redox during cycling, and enhances the structural stability of both the bulk and surface of the materials. As a result, the Ba/Ti co-doped sample exhibits an excellent capacity retention of 95.2 % after 300 cycles.
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhongbiao Wang,Zhanyun Yang,Xin Shi,Qing Zhang,Wenzhong Ma,Qiuyan Bi,Yakai Lin
Achieving a balance between high water permeability and excellent ion separation performance remains a significant challenge for traditional nanofiltration (NF) membranes due to the inherent trade-off between permeability and selectivity. This study proposes an innovative modification strategy involving dopamine (DA)-functionalized ball-milled graphitic carbon nitride (BM-g-C 3 N 4 ), leading to the successful fabrication of high-performance NF membranes. The ball-milling process significantly improves the dispersibility of g-C 3 N 4 , while DA functionalization enhances the hydrophilicity of the membrane surface and the adhesion to the substrate. The results demonstrate that the incorporation of DA functionalized BM-g-C 3 N 4 (DA@BM-g-C 3 N 4 ) effectively reduces defects in the separation layer and provides additional water transport channels. The modified membrane exhibited outstanding separation performance, with the separation factor (SF) increasing from 13.77 to 22.42 and permeation flux improving from 9.9 L/(m 2 ·h) to 17.54 L/(m 2 ·h), tested in a 2.0 g·L −1 MgCl 2 /LiCl mixed salt solution. Furthermore, the fabricated NF membranes showed excellent ion separation efficiency and long-term operational stability, with the rejection rate of Mg 2+ remaining stable between 92.74 % and 97.78 % after 200 h of continuous operation.
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Yaqin Ji,Haoran Du,Kang Wang,Jian Ma,Wenjuan Yang,Xulai Yang,Zhenzhen Liu,Xin Liang,Huaxia Deng,Hongfa Xiang
Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) is one of the most widely used solid electrolytes for solid-state lithium-ion batteries (SSLIBs). However, this ceramics-type solid electrolyte suffers from poor interfacial contact and impure surface phase, causing large interfacial resistance and hindering Li + transport. In this study, a binary polymer solution acting as a self-purification and surface-coordination agent, consisting of polyacrylonitrile (PAN) and poly (vinylidene fluoride-co-chlorotrifluoroethylene) (PC), are mixed with LLZTO to form a Li + -transport-enhanced solid-state composite electrolyte. PC effectively eliminates the Li 2 CO 3 impurity to form in-situ LiF coating on LLZTO particles. Simultaneously, the –CN groups in PAN establish coordination bonds with LLZTO, creating fast Li + transport channels at the polymer/ceramic interphase. In addition, the introduced flexible polymer phase enhances the interfacial contact between electrodes and electrolyte. The optimized polymer/LLZTO interphase enables the as-prepared solid-state composite electrolyte to deliver excellent electrochemical performances. The assembled quasi-solid-state Li||LiFePO 4 cells stably work at 0.5 C (1 C = 170 mA g −1 ) for >300 cycles at 60 °C and >600 cycles at room temperature, respectively. The Li||Li cell also shows a cycling life of >2000 h at 0.1 mA cm −2 and 0.1 mAh cm −2 . This strategy effectively improves Li + migration on the polymer/LLZTO interphase, providing a new approach for next-generation SSLIBs.
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高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Muhammad Waqas,Yupei Han,Dongjiang Chen,Shamshad Ali,Cheng Zhen,Chao Feng,Botao Yuan,Jiecai Han,Weidong He
With high energy density and low cost, lithium sulfur (Li–S) batteries own the potential to be next-generation electrochemical storage/conversion devices. However, their cyclic stability and life span are considerably impaired by polysulfide shuttling and self-discharge. Here, we design a microfiber glass filter-molybdenum disulfide/carbon-titanium nitride (μFGF-MoS 2 /C–TiN) interlayer for suppressing the shuttle of polysulfides and self-discharge of Li–S batteries. TiN in the interlayer molecularly captures high-order polysulfide Li 2 S 8 with an adsorption energy up to −6.48 eV, the largest high-order polysulfide absorption value ever reported. The μFGF-MoS 2 layer mechanically seizes polysulfides with interconnected torturous mesopores by functioning as a molecular sieve . With a sulfur loading of 4.5 mg cm −2 , the Li–S batteries based on μFGF-MoS 2 /C–TiN exhibit remarkable over-1000-cycle stability with an only 0.05% capacity decay per cycle and deliver an initial discharge capacity of 1000 mAh g −1 at 1C. The self-discharge is alleviated with an insignificant 10.3% capacity loss after a 30-day rest.
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高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Jun Yang,Jiahui Xian,Qinglin Liu,Yamei Sun,Guangqin Li
Bismuth (Bi) has indeed inspired great interests in lithium-ion batteries (LIBs) due to the high capacity, but was still limited by the low electrical conductivity and large volume variation. Herein, a composite material based on Bi nanoparticles in situ encapsulated by carbon film (Bi@CF) is prepared successfully through a facile metal–organic framework (MOF)-engaged approach. As anode materials for LIBs, the Bi@CF composites achieved high reversible capacities of 705 and 538 mAh g −1 at 0.2 and 0.5 A g −1 after 200 cycles, and long cycling performance with a stable capacity of 306 mAh g −1 at 1.0 A g −1 even after 900 cycles. In situ X-ray diffraction (XRD) measurements clearly revealed the conversion between Bi and Li 3 Bi during the alloying/dealloying process, confirming the good electrochemical reversibility of Bi@CF for Li-storage. The reaction kinetics of this Bi@CF composite was further studied by galvanostatic intermittent titration technique (GITT). This work may provide an inspiration for the elaborate design and facile preparation of alloy-type anode materials for high-performance rechargeable batteries.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zhen Peng,Xiaojie Yin,Tianli Han,Jiawei Long,Jinpei Hei,Jinyun Liu
High energy-storage Li-ion battery needs a high-capacity anode. However, current graphite-based anode doesn’t meet this requirement, thus developing high performance anode materials is highly needed and significant. Here, we provide a rational engineering of a multi-layered hollow structure combining with surface coating of polyamine (PANI) layer, forming a Co 3 O 4 /NiO@PANI hybrid using for Li-ion battery anode. PANI is able to effectively improve the conductivity of active materials; besides, PANI is flexible, which can prevent the collapse of the structure caused by volume-expansion during charge and discharge. The multi-layered morphology improves the utilization ratio of voids inside the conventional hollow structured materials, which is significant to improve capacity in practical applications. The Co 3 O 4 /NiO@PANI hybrid-based anode shows a capacity of 1049 mAh g −1 along with a Coulombic efficiency of 99.3% after 100 cycles of 0.2 A g −1 . Rate-performance of Co 3 O 4 /NiO@PANI exceeds that of the bare Co 3 O 4 /NiO. It is believed that the hierarchical structure combining multi-layered hollow morphology with surface coating of conductive polymer presented here would find broad applications for developing high-performance energy-storage hybrids.
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高影响因子
ACS Applied Energy Materials
·
2020
·
IF 4.473
Zihao Chen,Baichuan Han,Yuansheng Shi,Senhao Wang,Zhizhen Zhang,Xia Lu,Dapeng Cao
In this work, a hierarchical PVDF-HFP gel polymer electrolyte (GPE) membrane is prepared intentionally and placed between the solid electrolyte and the electrodes. The fabricated LiFePO4/GPE/LAGP/GPE/Li hybrid solid-state cell displays superior rate performance and capacity retention. After 300 cycles at 0.5 C, negligible degradation can be observed, and the specific capacity remains as high as 145.6 mA h/g at room temperature. The excellent battery performance is ascribed to the significantly improved interfacial stability of the sandwich-like hybrid electrolyte and the remarkably enhanced charge transfer kinetics across the interface due to the flexibility of GPE.
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高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Shidong Song,Yongqiang Xu,Yanli Ruan,Hong Wang,Dequan Zhang,Joykumar Thokchom,Donghai Mei
Amorphous Li–La–Zr–O (LLZO) solid-state electrolyte thin films are promising alternatives to the well-established lithium phosphorus oxynitride (LiPON) electrolyte for all-solid-state lithium batteries due to their potentially higher Li-ion conductivity and stability. Herein, the enhancement methodology in the ionic conductivity of amorphous LLZO-based thin films is investigated. By doping with Ta, the conductivity of the amorphous LLZO film at 30 °C (3.9 × 10–7 S cm–1) can be enhanced by up to an order of magnitude (2.6 × 10–6 S cm–1), ascribed to tuning Li conduction in local near-order LLZO nanodomains. On that basis, an isomeric Li–La–Zr–Ta–O (LLZTO) amorphous–crystalline composite thin film is prepared via incorporating cubic LLZTO particles into the amorphous LLZTO matrix. The composite film with 10 wt % cubic LLZTO filler can further achieve an ionic conductivity of 0.8 × 10–5 S cm–1 at 30 °C, which is comparable to the best values obtained for the state-of-art LLZO-based thin films. Li transport through the well-connected cubic LLZTO filler network and along the interfaces between the crystallites and the amorphous matrix in the LLZTO composite thin film may offer fast and long-range Li-conduction pathways, which supplement the ionic conduction in the amorphous matrix with short-range-ordered and long-range-disordered structures.
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高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 27
·10585-10592
·
IF 8.262
Hang Zhang,Guanhua Zhang,Zhiqin Li,Ke Qu,Lei Wang,Wei Zeng,Qingfeng Zhang,Huigao Duan
Developing advanced anode materials is crucial to further enhance the performance of lithium-ion batteries for electrochemical energy storage. Metal oxides embedded in a carbonaceous matrix are supposed to be promising candidates as anode materials due to their high specific capacity and excellent stability. Herein, we report a CuO/Cu-based carbonaceous nanocomposite system which was used as an anode material for high-performance lithium-ion batteries via an efficient synergistic effect. With an improved fabrication strategy, the CuO/Cu could be ultra-uniformly dispersed in nitrogen-doped carbon nanofibers. Benefiting from the in situ pyrolysis of Cu salts with improved structural stability and conductivity, the hybrid nanofiber electrode showed a specific capacity of 572.0 mA h g−1 and steady cycling performance over 500 cycles at a constant current density of 0.5 A g−1.
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高影响因子
危险品化学品经营许可证（带存储）