Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 16
·7155-7161
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IF 9.931
Mingbao Huang,Anding Xu,Huanhuan Duan,Songping Wu
To meet heavy-duty applications for LIBs, development of superior electrode materials with high-efficiency lithium-storage capability has become very crucial and urgent. Herein, a simple one-pot method has been developed for the synthesis of a reduced graphene oxide-wrapped FeS nanoflake (FeS@rGO) composite using oleylamine as a solvent, reductant, and surfactant. The as-prepared FeS@rGO composite as an anode material for LIBs showed excellent cycling ability and rate performance, i.e., reversible capacities of 887 mA h g−1 at the current density of 200 mA g−1 after 150 cycles, 662 mA h g−1 at 1.0 A g−1 after 200 cycles, and 325 mA h g−1 at 5.0 A g−1 even after 1000 cycles. These enhanced electrochemical performances can be attributed to the unique cladding structure, in which rGO can act as a protective coating to accommodate volume changes of FeS upon Li-cycling and offer a fast electron transfer channel. A two-dimensional sheet structure also facilitates Li+ ion diffusion in active electrode materials. More importantly, the enhanced extrinsic pseudocapacitance can promote the charge transfer rate and afford significant Li-storage capacity, thereby promoting the rate capability of a material at large current densities. Therefore, as a promising anode with high power density and long lifespan, this composite has shown its distinct potential and advantage for heavy-duty LIBs.
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高影响因子
ACTA MATERIALIA
·
2025
·
IF 9.3
An Wang,Shaozhen Huang,Zhangdi Xie,Jiahua Liao,Wenhao Li,Yuejiao Chen,Huimiao Li,Zhe Wang,Zhibin Wu,Libao Chen
A growing need for high-energy-density lithium metal batteries appeal for utilize ultrathin (≤50 μm) free-standing Li metal anodes . However, challenges such as the formation of an unstable solid electrolyte interphase and the lithium dendrites growth have led to poor cycling performance and safety concerns, limiting the commercial viability of thin lithium metal anodes. This work introduces a facile approach by designing and fabricating an ultrathin Li-In alloy anode through in-situ vacuum melting and codirectional continuous rolling. The rolled ultrathin Li-In anode achieves the induction of uniform epitaxial electrodeposition of Li(110), which is attributed to the lithiophility of the densely distributed In₃Li₁₃ alloy phase and the coherent heterogeneous relationship between textured In₃Li₁₃(311) and Li(110).The symmetrical cell assembled by 50 μm Li-In alloy anode exhibits a prolonged lifespan for 1800 h under the conditions of 1 mA cm -2 and 3 mAh cm -2 . Meanwhile, the LiFePO 4 ||Li-In (50 μm) full cell achieves sTable 450 cycles with a retention of 90.3 % at 2 C (1 C = 170 mA g -1 ). This work paves the path for the practical ultrathin Li anode for commercializing the lithium metal batteries .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lingbing Wu,Shan Wang,Yao Niu,Zhengyao Sun,Xianghua Yao,Youlong Xu
LiNi 0.5 Mn 1.5 O 4 (LNMO) is a high-profile cathode material for lithium-ion batteries with high voltage and high specific energy. However, its practical application is severely hindered by the dissolution of Mn, primarily induced by the Jahn-Teller effect, which leads to significant capacity degradation, especially under high current densities. In this research, LiNi 0.5-7/3x Cu x Al x Mn 1.5-7/3x Ti x V x O 4 (x = 0, 0.5 %, 1 %, 3 %) was synthesized via a sol–gel method employing a multivalent ion co-doping strategy, denoted as CATV. X-ray diffraction analyses that the increase in the (311)/(400) peak ratio of CATV-1 % indicates a higher concentration of Mn 3+ , which enhances the structural disorder of the material, thereby improving its electronic conductivity. By improving the ratio of the (110) plane, which is perpendicular to the lithium-ion diffusion pathway, the lithium-ion diffusion coefficient was enhanced by three orders of magnitude. Furthermore, the Mn dissolution issue originating from the (111) plane was mitigated which shows in XRF that the Mn content deposited on the negative lithium sheet was reduced by 50 %. Specifically, it delivered specific capacity of 136.2 mAh·g −1 at 0.1C and maintained 81.74 % of its capacity after 300 cycles at 1C. Under 20C charge–discharge condition, it reached 108 mAh·g −1 , doubling that of the undoped sample. These findings provide new possibilities for the commercial application of CATV materials.
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高影响因子
JOURNAL OF POWER SOURCES
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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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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
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·Vol. 172
·期 4
·040508
·
IF 3.3
Xiaola Li,Huihong Gong,Wenjie Huang,Wenzhao Huang,Ziyang Liang,Yuqing Liu,Boyang Zhang,Shuxing Wu,Chenyu Liu,Zhan Lin,Dong Luo
Li-rich Mn-based layered oxides (LLOs) are regarded as one of the most promising next-generation cathodes for lithium-ion batteries (LIBs) due to their ultra-high capacity and low cost. However, the redox behavior of oxygen under high voltage induces severe challenges, including voltage hysteresis and voltage decay, which have become major obstacles to their commercialization. This work optimizes the oxygen redox process of O2-type LLOs by regulating the Na content in P2-type Na-based intermediates. Experimental results demonstrate that samples prepared by intermediates with optimal Na content show higher reversibility and reduction potential of oxygen redox. Meanwhile, the migration and dissolution of transition metals in the optimized samples are effectively suppressed. Therefore, the optimized samples deliver an improved voltage stability and alleviated voltage hysteresis. This work suggests that the oxygen redox process can be regulated and provides a practical solution to mitigate voltage decay and hysteresis in LLOs.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Na Yang,Keting Li,Yufan Hao,Longfei Zhang,Yongli Sun,Luhong Zhang,Bin Jiang
Polyethyleneimine (PEI) nanofiltration (NF) membranes hold great application prospects in lithium extraction from salt lakes due to their high positive charge properties. However, the poor permeability of the membranes caused by the dense separation layer structure severely hinders their further application. Herein, a functional end-capping strategy was employed to address this problem by adding the effective end-capping reagent, Girard's Reagent T (GRT), to the PEI aqueous phase as the co-reaction reagent. Under the dual functions of the end-capping effect and the quaternary ammonium groups of GRT, the looseness and positive charge of the membrane were simultaneously optimized. After the modification of GRT, the looser structure of the PEI/GRT NF membrane improved its pure water flux (PWF) to 115 L m −2 h −1 at 6 bar, which was around 3.7 times higher than that of the original PEI NF membrane. Meanwhile, the enhanced positive charge (from −8 to 9 mV, pH = 7) of the membrane bottom surface allowed it to maintain the high rejection rate of MgCl 2 at 97.2 %. Besides, the PEI/GRT NF membrane exhibited good Mg 2+ /Li + selectivity (S Mg 2+ /Li + = 22.7, 2000 ppm, Mg 2+ /Li + mass ratio: 20:1). Therefore, this study provides a simple and feasible strategy for the preparation of high-permeable PEI NF membranes with good Mg 2+ /Li + separation performance.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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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 COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Qingqing Zhou,Chuyang Li,Bin Wang,Wenwei Ding,Junjie Lu,Bifu Sheng,Wei Li,Wenjuan Zhu,Qian Ni,Xiang Han
Polyethylene oxide (PEO)-based solid-state batteries have attracted extensive attention due to their scalable processing, flexible and soft interface contact, and excellent compatibility with lithium metal. The low ionic conductivity at room temperature, caused by the strong interaction between PEO chains and lithium ions , however, limits its practical application. Herein, taking the PEO-PAN dual-matrix polymer electrolyte as an example, a weak coordinated solvation structure is enabled by fluoroethylene carbonate (FEC) as a co-solvent during electrolyte preparation. The tiny residual FEC is demonstrated to weaken the interaction between lithium ions and PEO chains while competitively dissociating lithium salts with the residual solvent and anions. In addition, the incorporation of FEC enhances the dispersion of LATP nanoparticle fillers, which reduces the crystallinity of PEO. Furthermore, the anion-derived LiF-rich solid-electrolyte interphase significantly suppresses the formation of lithium dendrites. Consequently, the prepared PEO-PAN-LATP-LiTFSI-5 % FEC (PPLLF) composite solid polymer exhibits an ambient ionic conductivity of ∼ 1 × 10 −4 S cm −1 and enables stable cycling for over 450 h in a Li||Li symmetrical battery at room temperature. The assembled Li|PPLLF|LFP full battery delivers a specific capacity of 137.6 mAh/g after 300 cycles at 0.2C, further demonstrating the effectiveness of the solvation manipulation strategy.
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PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
He Jiaxing,Deng Youzhi,Han Junwei,Xu Tianze,Qi Jiangshan,Li Jinghong,Zhang Yibo,Zhao Ziyun,Li Qi,Xiao Jing,Zhang Jun,Kong Debin,Wei Wei,Wu Shichao,Yang Quan-Hong
Ideal silicon negative electrodes for high-energy lithium-ion batteries are expected to feature high capacity, minimal expansion, long lifespan, and fast charging. Yet, engineered silicon materials face a fundamental paradox associated with particle deformation and charge transfer, which hinders the industrial use of advanced silicon electrode materials. Here we show a sieving-pore design for carbon supports that overcomes these mechano-kinetic limitations to enable stable, fast (de)alloying chemistries of silicon negative electrodes. Such a sieving-pore structure features an inner nanopore body with reserved voids to accommodate high-mass-content silicon deformation and an outer sub-nanopore entrance to induce both pre-desolvation and fast intrapore transport of ions during cycling. Importantly, the sieving effect yields inorganic-rich solid electrolyte interphases to mechanically confine the in-pore silicon, producing a stress-voltage coupling effect that mitigates the formation of detrimental crystalline Li 15 Si 4 . As a result, this design enables low electrode expansion (58% at the specific capacity of 1773 mAh g − 1 and areal capacity of 4 mAh cm − 2 ), high initial/cyclic Coulombic efficiency (93.6%/99.9%), and minimal capacity decay (0.015% per cycle). A practical pouch cell with such a sieving-pore silicon negative electrode delivers 80% capacity retention over 1700 cycles at 2 A as well as a 10-min fast charging capability.
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PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Hongwei Zhu,Shidi Huang,Zhe Cui,Mengluan Gao,Wenqing Wang,Rujia Zou
Although elevating the upper cutoff voltage can directly increase the reversible capacity of LiCoO2 (LCO), severe capacity fading caused by structural and interfacial degradation restricts its practical application. Herein, we propose a synergetic modification strategy combined with La3+ doping and LiTaO3 (LTO) coating to enhance the electrochemical performance of LCO operating at high voltages. Generally, La3+ doping can increase the interlayer spacing and significantly increases the ion conductivity, while the LTO coating acts as a robust protection layer, which also facilitates the interfacial Li+ diffusion. As a result, comodified LCO shows an enhanced capacity retention of 88.6% after 200 cycles at 3.0–4.5 V, while the capacity retention of Bare LCO is only 25.4%. For a higher cutoff voltage of 4.6 V, comodified LCO still exhibits an excellent capacity retention of 85.7% after 100 cycles.
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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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高影响因子
危险品化学品经营许可证（带存储）