Journal of Energy Storage
·
2026
·
IF 10.7
Qing Li,Zichao Xia,Man Huang,Miao Wu,Lele Pei,Xing Zhang,Chao Li,Yu Zhang,Kangzhe Cao
Despite the multiple advantages of MnNb 2 O 6 -based anodes for Li + storage, the relatively low Li + -storage activity of their Nb species limits their Li + -storage performances. Herein, two significantly different-sized MnNb 2 O 6 /N-doped carbon (NC) composites with primary MnNb 2 O 6 nanoparticles uniformly confined in NC substrate are synthesized, denoted as P-MNO-NC (as tiny as approximately 5 nm for primary MnNb 2 O 6 nanoparticles) and H-MNO-NC (20–50 nm for primary MnNb 2 O 6 nanoparticles), respectively. Compared with H-MNO-NC, the significantly downsized primary MnNb 2 O 6 nanoparticles of P-MNO-NC enhance surface atom density and MnNb 2 O 6 /NC interface density, thus raising surface energy and residual stress to promote lattice relaxation. Consistent with this, systematic characterizations and theoretical calculations confirm that P-MNO-NC features widened intra-lattice Nb-layer Li + channels and reduced Nb-layer Li + -diffusion energy barrier to facilitate Li + migration through Nb layers, which makes the Nb 5+ ions of P-MNO-NC more accessible to the intercalated Li + ions and thereby substantially enhances the Li + -storage capability of its Nb species. Correspondingly, P-MNO-NC exhibits significantly higher Nb 3+ content after lithiation than H-MNO-NC. The intercalation-type Li + -storage mechanism is also verified for both composites. On this basis, P-MNO-NC significantly outperforms H-MNO-NC in Li + -storage performances as anode for both lithium-ion batteries (LIBs) and hybrid lithium-ion capacitors (HLICs). This work provides a fresh crystallographic insight into the size-reduction effect of P-MNO-NC on its significantly enhanced Li + -storage capability, which can be adopted to optimize the intrinsic Li + -storage performances of other Nb-based anodes.
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高影响因子
Nano-Micro Letters
·
2026
·
IF 38.5
Jing Gao,Minghao Hua,Junze Lu,Yuying Qin,Shuxian Zhang,Qingyu Li,Lidong Yang,Chengxiang Wang,Xiaohang Lin,Yuanwei Sun,Longwei Yin,Rutao Wang
Pseudocapacitive materials employ rapid, non-diffusion-limited faradaic processes to store charge, demonstrating significant potential for fast-charging batteries and supercapacitors. However, the high redox potentials of existing pseudocapacitive anodes substantially lower the overall cell voltage and energy density. Here, a cation-disordered rock-salt lithium titanium oxyfluoride (DRX-Li x TiOF 2 , 0 < x < 2) is reported to reversibly accommodate approximately 1.19 mol of Li + (~ 310 mAh g −1 ) and delivers high-rate performance (exceeding 64.4 C) via pseudocapacitive Li + storage within a low potential window extending down to 0.1 V vs. Li + /Li. This pseudocapacitive behavior is characterized by several structural and electrochemical features: the absence of phase transformation during Li + intercalation, quasi-rectangular cyclic voltammetry curves, sloping charge/discharge profiles and a surface-controlled current response. We further reveal that the pseudocapacitive characteristics originate from a three-dimensional percolation network that facilitates fast Li + migration with low energy barriers, enabled by a cation/anion-disordered structure arising from the mixed occupancy of Li/Ti cations and O/F anions. Owing to its low operating potential and high-rate capability, DRX-Li x TiOF 2 allows a lithium-ion capacitor to attain 4.0 V cell voltage and achieve energy and power densities several times higher than those obtained with conventional anodes, such as battery-type Li 4 Ti 5 O 12 or pseudocapacitive materials like Nb 2 O 5 and TiO 2 .
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiadi Liu,Zhiwei Zhao,Liyuan Chen,Chen Guannan,Boqian Zhao,Yuan Lulu,Zhenhua Jiang,Jinhui Pang
Nanofiltration (NF) shows great promise for recovering lithium (Li + ) from brine. Conventional strategies to improve the water flux of nanofiltration membrane usually destroy the stability of nanofiltration membrane. We developed a high-pressure-tolerant NF membrane by engineering an in-situ grown polyaniline (PANI) interlayer on a hydrolyzed poly (aryl ether ketone) (PEEK) substrate. This PANI interlayer, which exhibits excellent compatibility with PEEK, provides a robust platform for the subsequent formation of a polyamide (PA) selective layer via interfacial polymerization, thereby overcoming the inherent difficulty in functionalizing PEEK. The three-layer PEEK/PANI/PA structure ensures that the PANI interlayer protects the PA selective layer from direct interaction with the finger-like pores of the PEEK substrate, thereby preventing its structural collapse under high pressure. This unique configuration ensures structural integrity and enables high water flux. The optimal membrane obtained a high water flux of 118.97 L m −2 h −1 and a Mg 2+ /Li + separation factor of 15.8 at 30 bar. Long-term testing at 50 bar demonstrated stable operation for approximately 18 h, defining the performance limit of this membrane system. This work provides a solution for Mg 2+ /Li + separation nanofiltration membranes with improved water flux and high-pressure tolerance.
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高影响因子
ACS ES&T Water
·
2026
·
IF 4.5
Wencong Wang,Mingming Wang,Xianglei He,Yufeng Yang,Hui Yang,Takeshi Yanagihara
Lithium/aluminum layered double hydroxides (Li/Al-LDHs) have been widely studied for lithium extraction due to their favorable adsorption capacity and outstanding ion selectivity; however, practical applications are limited by the difficulty of SO42– intercalation–induced lithium desorption and structural delamination. In this study, siloxane networks after hydrolysis and polymerization of methyltrimethoxysilane (C4H12O3Si) were employed as cladding layers to cover the surfaces of Li/Al-LDHs, aiming to suppress SO42– intercalation and enhance the structural integrity, thereby mitigating delamination. The resistance effect is positively correlated with the thickness of the cladding layer. The adsorption capacity of the optimal sample after 8 cycles was increased by 50% compared to the pristine Li/Al-LDH. Additionally, its separation coefficients for Li/K, Li/Na, and Li/Mg─specifically 50.82, 50.47, and 149.74─significantly outperformed those of pristine Li/Al-LDH.
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Journal of Energy Storage
·
2026
·
IF 10.7
Binchao Xu,Zhijun Zhao,Xinyi Yuan,Tao Yu,Yu Tian,Yongbin Xu,Hong Zhang,Yuxiao Wang,Jianwei Li,Xiaojun Wang,Peng Wang,Zhiming Liu
Lithium‑sulfur batteries have attracted considerable attention owing to their exceptionally high theoretical capacity and low material cost. However, the sluggish redox kinetics of polysulfides and the associated shuttle effect continue to pose significant barriers to their practical application. The integration of alloy-based catalysts into sulfur cathodes has shown promise in mitigating the polysulfide shuttle effect and enhancing redox reaction kinetics. Nevertheless, in-depth investigation into the surface structure of such catalysts remains limited. In this work, we report a core–shell heterostructure catalyst composed of low-entropy NiCoMn (NCM) alloy nanoparticles as the core and a thickness-controllable phosphated amorphous surface layer as the shell, which functions as a highly efficient electrocatalyst for lithium‑sulfur batteries. The NCM alloy nanoparticles, derived from spent ternary lithium-ion batteries, are first immobilized on a nitrogen-doped porous carbon (NC) support. Subsequent phosphating treatment induces the formation of a nanoscale-layer-thick amorphous skin, yielding the P x -NCM-NC (x represents the phosphating time) catalyst. Owing to its core–shell heterostructure, the catalyst can efficiently modulate the electronic structure, facilitate electron transfer, promote polysulfide conversion, and enhance reaction kinetics. Experimental results demonstrate that P 30 -NCM-NC, with a suitable amorphous skin thickness, exhibits outstanding electrochemical performance, delivering an initial discharge capacity of 1109 mAh g −1 at 0.3C. This study provides new insights into the upcycling and sustainable reuse of valuable metals from spent battery. Furthermore, it introduces an “amorphous skin” engineering approach for enhancing catalytic activity in lithium‑sulfur battery systems.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yang Yu,Siyuan Li,Hongbao Li,Changhong Ma,Dong Yue,Yu Feng
High-permittivity ceramics are essential for compact capacitors, high-capacitance-density components, and energy-efficient electronics. However, their practical implementation is often limited by the difficulty of simultaneously achieving giant permittivity, low dielectric loss, and operational stability. Herein, (Al 0.5 Li 0.5 ) x Zn 1− x O ceramics with high dopant content were fabricated by spark plasma sintering (SPS)to simultaneously regulate bulk defects and grain boundary barriers. The optimized x = 0.2 ceramic exhibits colossal permittivity over a broad frequency range, with a relative permittivity of 11710 and a dielectric loss of 0.101 at 100 Hz. Microstructure and impedance analyses reveal that the colossal permittivity of the co-doped ZnO ceramics originates from an internal barrier layer capacitor (IBLC) response arising from the electrical contrast between semiconducting ZnO grains and resistive grain boundaries. The former are associated with donor-related defect chemistry and the reducing SPS environment, whereas the resistive grain-boundary response is associated with Al 3+ enrichment and ZnAl 2 O 4 -related secondary phases. Furthermore, first-principles calculations indicate that Li + -related defects and Li + –Al 3+ complexes induce local lattice distortion and charge redistribution, while finite-element simulations illustrate modified breakdown-channel evolution. This work demonstrates a defect–grain boundary co-regulation strategy for designing ZnO-based giant dielectric ceramics suitable for compact and reliable capacitive applications.
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Nanomaterials
·
2026
·Vol. 16
·期 17
·1055
·
IF 4.8
Hang Yu,Wenjin Song,Runxin Huang,Jiale Liu,Yanshuo Du,Di Lu,Xianxian Shi,Yufang Chen
Lithium-oxygen (Li-O2) batteries are a compelling next-generation energy storage candidate owing to their ultrahigh theoretical specific energy, but their practical deployment is critically limited by sluggish cathodic oxygen reduction/evolution kinetics, severe polarization, and poor cyclability. Here, we design a composite catalyst consisting of ultrasmall iron clusters uniformly anchored on a three-dimensional nitrogen-doped carbon aerogel (Fe@NC). The material is synthesized via bidirectional freeze-drying followed by high-temperature reduction carbonization using chitosan, cellulose nanocrystals, and zinc acetate; sublimation of zinc during pyrolysis effectively suppresses iron aggregation, yielding highly dispersed Fe0 clusters of ~10 nm while preserving the aerogel’s hierarchical porous architecture rich in pyridinic and pyrrolic N species. Electrochemical tests show that Fe@NC delivers a deep-discharge specific capacity of 18,000 mAh/g, substantially outperforming pristine carbon aerogel and commercial Ketjen black, and maintains stable cycling over 280 cycles at 500 mAh/g. Microscopic and spectroscopic analyses confirm that Fe@NC promotes uniform, fine-particle Li2O2deposition without pore blockage and enables its complete reversible decomposition upon charging, effectively mitigating electrode passivation. This work demonstrates that the synergistic combination of carbon aerogel mass-transport benefits and iron cluster catalytic activity provides a viable, scalable route to high-performance Li-O2battery cathodes.
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Journal of Energy Storage
·
2026
·
IF 10.7
Enda Liao,Ke Zeng,Bifa Ji,Shuhua Guan,Xiaolong Zhou,Sarayut Tunmee,Chamchuang Thitikorn,Ukit Rittihong,Hedeki Nakajima,Keiji Komatsu,Hidetoshi Saitoh,Yongbing Tang
Lithium carbon dioxide (Li-CO 2 ) batteries exhibit an ultrahigh theoretical energy density of 1876 Wh∙kg −1 and enable potential CO 2 capture for carbon neutrality. However, acidic CO 2 reacts with Li-metal anodes (CO 2 shuttle effect), causing pulverization and battery failure. Herein, we propose a separator gas barrier design strategy to address the critical issue of CO 2 shuttle-induced corrosion in Li- CO 2 batteries. The core of this strategy lies in a diamond-like carbon (DLC)-modified separator, which is engineered to possess exceptional gas barrier properties. Theoretical calculations and systematic experimental verifications collectively confirm that this separator efficiently suppresses the CO 2 shuttle effect, fundamentally mitigating Li-anode corrosion. Notably, the Li-CO 2 battery with this separator achieves a long cycle life over 1200 h (500 mAh∙g −1 , no extrinsic metal-based catalyst)—over 5 times longer than that with a pristine separator (240 h). This work provides a novel, universal design paradigm to enhance the cycling stability of metal-gas batteries (e.g., Li-O 2 , Na-CO 2 ), addressing a long-standing challenge in high-performance metal-gas energy storage systems by using separators as “gas barriers” to protect metal anodes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xin Shi,Qiuyan Bi,Zizhen Peng,Zhicheng Wang,Fangbo Zhu,Yakai Lin,Wenzhong Ma,Chuanjie Fang,Shiai Xu
RIP microenvironment regulation and amino acid functionalization synergize NF design. • BDM scavenges H + to suppress PEI protonation and preserve reactivity. • L-Arginine functionalization enhances membrane hydration and positive charge. • P-B-0.8/A-0.1 membrane achieves 99.5% Mg 2+ rejection and an SF of 131.7. • After 80 h, MgCl 2 rejection >98%, showing stable and antifouling performance. Thin-film composite (TFC) nanofiltration (NF) membranes show great potential for Mg 2+ /Li + separation. However, during conventional interfacial polymerization, excessively rapid amine diffusion and local acidification at the reaction interface can lead to nonuniform interfacial reactions. This study proposes a synergistic construction strategy of membrane forming microenvironment regulation and amino acid interface empowerment. Bis (2-dimethylaminoethyl) ether moderated the apparent migration and protonation behavior of polyethylenimine and alleviated local acidification at the reaction front. Subsequent L-arginine post modification enhanced surface hydration and modified the acid–base/charge characteristics of the polyamide layer interface. P-B-0.8/A-0.1 membrane with high positive surface charge (IEP pH = 8.5), excellent antifouling properties, and a uniform pore-size distribution were constructed for Mg 2+ /Li + separation. In the MgCl 2 /LiCl mixed salt system, the membrane achieved an Mg 2+ rejection rate of 99.5% and a separation factor of 131.7. During 80 h of continuous operation, the Mg 2+ rejection rate remained above 98%. Moreover, the P-B-0.8/A-0.1 membrane exhibited excellent flux recovery and anti-scaling stability during BSA and lysozyme fouling cycles, as well as in CaSO 4 and CaCO 3 inorganic scaling systems.
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Rouyan Guo,Congcong Dang,Yiping Liu,Guangqi Zhang,Lingti Kong,Liancheng Zhao,Liming Gao
Developing an efficient and highly catalytic cathode is crucial to the advancement of rechargeable Li-O 2 batteries for utilizing their high theoretical energy density. However, due to the sluggish kinetics of the oxygen-involved reactions, the problems of short lifespan and large overpotential prevent their widely practical applications. Thus, cathodes are designed to enhance the adsorption capacity for oxygen and modulate the electron mobility for Li-O 2 batteries. Herein, NiAl layered double hydroxide (LDH)@Cu 2 S heterostructure with extremely large specific surface area and numerous exposed active sites is designed, combining snowflake-shaped Cu 2 S and dispersed two-dimensional layered NiAl LDH. Excitingly, NiAl LDH@Cu 2 S cathode exhibited a large specific discharge capacity of 14,519 mAh g -1 at a current density of 100 mA g -1 and prolonged cycle life up to 275 cycles at 300 mA g -1 with a cut-off capacity of 600 mAh g -1 , accompanied by a low discharge overpotential of 0.14 V at the first cycle. Theoretical calculations demonstrated that the excellent electrochemical performance stems from the optimized adsorption energy of the NiAl LDH@Cu 2 S structure for reactants and intermediate products, which reduces the energy barrier of discharge/recharge process. Therefore, benefited from the modulation of electron mobility and the promoted adsorption of oxygen, NiAl LDH@Cu 2 S heterojunction can display remarkable cycle stability and reversibility as the cathode catalyst, suggesting great application prospects for enhanced Li-O 2 batteries.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Guanzheng Wang,Xiaoli Zhan,Wenjiang He,Zhentao Yuan,Lu Li,Xiao Wang,Wenshen Tang,Zhaolin Zhan
The electronic conductivity of TiO 2 -based anodes was improved fundamentally by co-integrating the oxygen vacancy of TiO 2 into the homogeneous structure with cobalt doping. The results showed that the introduction of oxygen vacancies and Co expanded the lattice space, reduced the charge transfer resistance, and effectively increased the electronic conductivity and ionic transport. Density functional theory (DFT) calculations illustrated that Co doping resulted in a continuous distribution of electronic states at the Fermi energy level, which permitted the sample Co-A/R-TiO 2 to have enhanced metallic properties. The presence of abundant grain boundaries, interfacial and vacancy defects in the hollow microsphere anode all served as additional active sites for Li + storage. The Co-A/R-TiO 2 anode had a high reversible specific capacity of 443 mAh/g after 500 cycles at 0.5 C current density. The high capacity was mainly attributed to the synergistic effect of the perfect defect structure of the hollow spheres and the heterogeneous interfaces. This strategy of using defects combined with homo/heterojunction engineering could be extended to the design of other conventional semiconductor materials as energy storage electrodes.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jingchun Sun,Deshan Tan,Xingyu Li,Xiaole Han,Yi Liu,Tengfei Zhou,Qingqing Jiang,Juncheng Hu
Li-CO 2 batteries could capture and convert CO 2 into a valuable energy storage medium. The slow kinetics and high activation barrier associated with the breakdown cleavage of discharge products pose a significant hurdle in the advancement of reversible Li-CO 2 batteries. Herein, cotton-derived self-standing carbon fibers were utilized to disperse Ru nanoparticles which could avoid depletion of active sites caused by stacking of graphite-based supports. Consequently, CBRu cathode presents small voltage polarization of 1.41 V at high current density of 200 μA cm −2 , and high energy efficiency of 76.0 % at 20 μA cm −2 as well as long-term cyclability over 1000 h. According to in/ex-situ characterizations and theoretical calculations, the unique cross-linked structure of the carbon fibers offers ample space for the deposition of discharge products while these ultrafine Ru nanoparticles regulate the growth path of Li 2 CO 3 and accelerate reaction kinetics. This study offers a novel perspective on the selection of self-standing cathode carbon matrix for Li-CO 2 batteries.
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PubMed
高影响因子
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