ACS Applied Energy Materials
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2022
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IF 6.959
Chi Wei,Gaoxu Huang,Jiayi Mao,Jia Cai,Xiaopan Jin,Mengjia Guan,Feng Yu,Bin Dai,Yongsheng Li
Sodium metal batteries (SMBs) are attracting intensive attention as an appealing candidate for high-energy-density batteries, owing to the high specific capacity, rich abundance, and low cost of metallic sodium (Na). However, the practical application of SMBs has been greatly hindered by the uncontrollable dendrite growth and unstable solid electrolyte interfaces, which are responsible for the poor Na stripping/plating reversibility and short lifespan. Herein, we report an atomically dispersed Fe-doped mesoporous carbon nanosphere (Fe-MCN) as a sodiophilic host for facilitating homogeneous Na nucleation and deposition behaviors. Benefitting from the advantages of uniform mesoporous structures with large surface areas and atomically dispersed Fe doped in the carbon nanospheres, low nucleation barriers and subsequent homogeneous deposition behavior of Na metal are achieved, which give rise to highly reversible stripping/plating performance and outstanding cycling stability. As a result, the Na||Cu cell based on Fe-MCN-modified Cu substrates exhibits outstanding electrochemical performance with a high Coulombic efficiency of 99.97% over 850 cycles, and an ultralong cycling lifespan of 2600 h at 1 mA cm–2 and 1 mA h cm–2 is demonstrated by the symmetric cell with Na@Fe-MCN@Cu anodes. Moreover, the Na3V2(PO4)3 full cell based on the Na@Fe-MCN@Cu anode guarantees outstanding cycling stability for 2000 cycles with a capacity retention as high as 84%, showing high potential in the practical application of SMBs.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
·
2026
·
IF 17.6
Shiqi Wang,Tianwei Cui,Min Zhang,Yijun Song,Yue Zhou,Biao Li
In oxygen-redox cathodes, voltage hysteresis largely arises as oxygen redox generally proceeds with electrochemical reactions followed by chemical reactions that normally drive asymmetrical charge and discharge pathways. Although different superstructures, such as ribbon and mesh units, were intentionally introduced to mitigate voltage hysteresis, those structures remain as model compounds that can hardly be implemented in real-world applications. Here, inspired by the classical Li-rich layered Li[Li 0.2 Ni 0.2 Mn 0.6 ]O 2 , we design a new O3-type sodium layered oxide, NaLi 0.2 Ni 0.2 Mn 0.6 O 2 , that delivers 205.2 mA h g − 1 with reversible oxygen redox but shows mitigated voltage hysteresis and suppressed voltage decay. Atomic-resolution scanning transmission electron microscopy reveals that deep desodiation reconstruts an addtional inverse-honeycomb superstructure in the alkali layer, which is retained after discharge and extended cycling. Li analogues prepared via (electro)chemical ion-exchange reactions from pristine and charged-state Na precursors further reveal the critical role of this inverse-honeycomb ordering in suppressing voltage hysteresis. Thermal relaxation experiments combined with spectroscopic studies show that inverse-honeycomb ordering suppresses Ni-centered ligand-to-metal charge transfer associated with chemical relaxation, allowing the reduction process to proceed from a nonequilibrium state, thereby mitigating voltage hysteresis. Our study provides practical significance in this newly designed Na compound NaLi 0.2 Ni 0.2 Mn 0.6 O 2 by taking advantage of in situ formation of inverse-honeycomb ordering. Graphical An O3-type NaLi 0.2 Ni 0.2 Mn 0.6 O 2 cathode undergoes electrochemically induced reconstruction of inverse-honeycomb ordering in the alkali layer during deep desodiation. The reconstructed superstructure suppresses Ni-centered ligand-to-metal charge transfer, preserves more high-voltage cationic-redox contribution, and reduces delayed low-voltage oxygen reduction, thereby mitigating voltage hysteresis and voltage decay while maintaining high reversible capacity.
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DOI
高影响因子
Materials Today Energy
·
2026
·
IF 8.1
Peijun Zhu,Xin Zhou,Jiahao Lu,Zhixiong Zou,Liang Zhao,Ruizhi Yang
O3-type layered oxides are considered as potential materials for sodium-ion batteries (SIBs) because of their cost competitiveness and high reversible capacity. Whereas, their commercialization is limited by sluggish Na + kinetics, irreversible phase transition, and poor air stability. Herein, to address these challenges, we propose zirconium (Zr) doping to regulate the structure of O3-NaCu 0.2 Fe 0.3 Mn 0.5 O 2 (CFM). With the incorporation of Zr into CFM, the diffusion channel is expanded, and the detrimental phase transition is suppressed, thereby the Na + diffusion kinetics is facilitated and the layered structure is stabilized. The optimized NaCu 0.15 Fe 0.3 Mn 0.5 Zr 0.05 O 2 (CFM-Zr0.05) cathode delivers a high capacity of 121.5 mAh g −1 and a favorable capacity retention of 70% after 400 cycles at 1C. When paired with hard carbon anode, the full cell maintains 84.8% of its initial capacity after 100 cycles at 0.5C, demonstrating promising practical application potential. Furthermore, Zr-doped CFM cathode demonstrates enhanced air stability by mitigating Na + /H + exchange. This work presents a rational design strategy to achieve high-performance O3-type layered oxide cathodes, benefitting the development of SIBs for large-scale energy storage.
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DOI
高影响因子
Biomaterials Advances
·
2026
·
IF 6.7
Linfeng Fan,Zhiyuan Dai,Xinna Bai,Xudan Liu,Zhangui Tang,Hao Pan,Yan Zhang,Dou Zhang
KNN nanoparticles act as nucleating agents in PVDF films, promoting β-phase formation and enhancing piezoelectric properties. • The piezoelectric field generated by KNN/PVDF film promotes fibroblast migration. • Elevated TGF-β and VEGF expression accelerates angiogenesis and wound healing. Electrical stimulation that mimics endogenous electric fields represents a promising therapeutic strategy for wound healing. In this study, a lead-free piezoelectric composite film was fabricated by incorporating (K,Na)NbO 3 (KNN) ceramics into a polyvinylidene fluoride (PVDF) matrix via tape casting. The introduction of KNN fillers significantly enhanced the β-phase content and piezoelectric output of PVDF. Under ultrasound irradiation, the resulting KNN/PVDF film effectively promoted fibroblast proliferation and migration in vitro, achieving a 54.84% migration rate within 24 h and upregulating key wound-repair genes, including TGF-β and VEGF. In vivo, the composite film markedly accelerated the healing of full-thickness skin defects in rats, promoted neovascularization, and achieved approximately 95% wound closure by day 9. These results demonstrate that the KNN/PVDF composite film provides an effective wireless platform for biomimetic electrical stimulation in tissue regeneration.
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Juan Long,Gui Yang,Yang Wu,Lin Wang,Yawen Xiao,Shiping Zhang,Huachao Che,Juhong Zhan,Xiaoyong Wu,Bin Huang,Fengzhi Jiang,Shaowen Cao,Xuejun Pan
Ultrathin g-C 3 N 5 with Na-K sites, N-vacancies, and –C N was synthesized. • CN-Na-K yields 4739.89 μmol‧g −1 ‧h −1 H 2 O 2 under aeration-free conditions. • –C N and N-vacancies synergistically boost π-electron delocalization. • Na-K dual sites drive both ORR and WOR pathways for H 2 O 2 production. Photocatalytic solar-driven H 2 O 2 synthesis offers a sustainable energy route but is often limited by the need for supplemental oxygen. To overcome barriers, a distinctive ultra-thin g-C 3 N 5 nanosheet with cyano groups (–C N), N-vacancies, and Na-K dual active sites (CN-Na-K) was structured for H 2 O 2 production in natural-oxygen-conditions (aeration-free). The introduction of the –C N function as an electron pump to construct an internal electric field (IEF) promoted charge separation. Simultaneously, N-vacancies broke the structural localization to enhance π-electron delocalization, creating high-speed channels for carrier transport. Crucially, the Na-K dual sites acted as catalytic centers that enabled the water oxidation reaction (WOR) by driving the formation of key intermediates (*O 2 , *OOH, and *OH), where Na + acted as a powerful electron sink, and K + promoted excited-state electrons and stabilized holes. Therefore, the –C N, N-vacancies, and Na-K dual active sites synergistically promoted an enhanced H 2 O 2 production rate of CN-Na-K (1260.03 μmol‧g −1 ‧h −1 in LED lamp and 4739.89 μmol‧g −1 ‧h −1 in Xe lamp) under aeration-free conditions. Besides, characterizations and density functional theory (DFT) calculations confirmed the CN-Na-K system produced H 2 O 2 via a dual-channel pathway for the oxygen reduction (ORR) and WOR. This work provides a systemic design for electronic delocalization and dual active site engineering to achieve efficient aeration-free H 2 O 2 production. Download: Download high-res image (262KB) Download: Download full-size image
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DOI
高影响因子
DESALINATION
·
2025
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IF 9.8
Jianning Liu,Jialu Chen,Zirui Wang,Shanxia Luo,Fengfeng Gao,Xiao Du,Wenbiao Ma,Xiaogang Hao
Efficient recovery of residual lithium from lithium precipitation brine has always been a major challenge. A stable and efficient lithium extraction system and a driven mode need to be constructed. This study presents an innovative coupled electrochemical system combining a chlorine-doped polypyrrole (PPy−Cl) electrode with the LiMn 2 O 4 electrode. In this system, the LiMn 2 O 4 film electrode and chlorine-doped polypyrrole were synchronized to remove lithium and chlorine ions, and complete de-intercalation of LiMn 2 O 4 could be achieved at the cell voltage of 1.1 V, which greatly reduces energy consumption. No manganese ions were detected in the solution compared to the 1.43 % manganese dissolution loss after 10 tests on the graphite plate (GP) used as an auxiliary electrode. In addition, self-electrical-energy recuperation can be achieved by utilizing the low potential difference between Li 1-x Mn 2 O 4 and polypyrrole. The performances of the self-driven(SD) mode and the constant-current(CC) mode were compared to achieve externally controlled energy release. The intercalation capacity reached 33.82 mg g −1 at 0.4 mA cm −2 , and the intercalation efficiency was maintained at 88.12 % after 10 tests. During the first discharge, the discharge efficiency of the SD mode was only 54.08 % of the CC mode. Furthermore, the system exhibited high selectivity (51.3) in the lithium-precipitated brine with a high concentration of Na + and Li + (Na + /Li + = 8.47). These results indicate that the proposed strategy has significant potential in Li + resource recovery and can be used in a variety of Li + resource recovery applications.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yanni Li,Zhigui Zhang,Baobao Wang,Runguo Zheng,Dan Wang,Zhishuang Song,Yanguo Liu,Zhiyuan Wang
High-entropy oxides (HEOs) represent promising anode materials for lithium-ion batteries, yet understanding the intricate relationship between their multi-element composition, crystal structure, and lithium storage mechanism remains a fundamental challenge. This study systematically investigates this relationship in (XCoNiCuZn)O (X = Li, Na, Mg) HEOs by modulating the fifth element. While all compositions form a single rock-salt structure, the cationic radius and valence state of X dictate both the lattice parameters and the electrochemical reaction pathway. It is revealed that (LiCoNiCuZn)O and (MgCoNiCuZn)O undergo a conversion-dominated phase transition mechanism, whereas (NaCoNiCuZn)O follows a solid-solution reaction. This mechanistic divergence, elucidated through in-situ EIS, ex-situ XRD/XPS, and kinetic analysis, directly governs the electrochemical performance. The Li-based HEOs (LiCoNiCuZn)O demonstrates exceptional performance, delivering a high capacity of 549.7 mAh g −1 with 83.4% retention after 300 cycles at 0.5 A g −1 , attributable to its effective charge compensation and superior ion conductivity. This work establishes a clear correlation from cationic modulation to storage performance, offering critical guidance for the rational design of HEOs for energy storage.
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产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Yiran Sun,Pengfei Zhou,Siyu Liu,Zhongjun Zhao,Yihao Pan,Xiangyan Shen,Xiaozhong Wu,Jinping Zhao,Junying Weng,Jin Zhou
P2-Na 0.67 Ni 0.33 Mn 0.67 O 2 (NNMO) is promising cathode material for sodium-ion batteries (SIBs) due to its high specific capacity and fast Na + diffusion rate. Nonetheless, the irreversible P2-O2 phase transformation, Na + /vacancy ordering, and transition metal (TM) dissolution seriously damage its cycling stability and restrict its commercialization process. Herein, Na occupation manipulation and interface stabilization are proposed to strengthen the phase structure of NNMO by synergistic Zn/Ti co-doping and introducing lithium difluorophosp (LiPO 2 F 2 ) film-forming electrolyte additive . The Zn/Ti co-doping regulates the occupancy ratio of Na e /Na f at Na sites and disorganizes the Na + /vacancy ordering, resulting in a faster Na + diffusion kinetics and reversible P2-Z phase transition for P2-Na 0.67 Ni 0.28 Zn 0.05 Mn 0.62 Ti 0.05 O 2 (NNZMTO). Meanwhile, the LiPO 2 F 2 additive can form homogeneous and ultrathin cathode-electrolyte interphase (CEI) on NNZMTO surface, which can stabilize the NNZMTO-electrolyte interface to prevent TM dissolution, surface structure transformation, and micro-crack generation. Combination studies of in situ and ex situ characterizations and theoretical calculations were used to elucidate the storage mechanism of NNZMTO with LiPO 2 F 2 additive. As a result, the NNZMTO displays outstanding capacity retention of 94.44% after 500 cycles at 1C with 0.3 wt% LiPO 2 F 2 , excellent rate performance of 92.5 mA h g −1 at 8C with 0.1 wt% LiPO 2 F 2 , and remarkable full cell capability. This work highlights the important role of manipulating Na occupation and constructing protective film in the design of layered materials, which provides a promising direction for developing high-performance cathodes for SIBs.
研究领域:
材料科学
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电化学
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能源存储
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无机化学
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固态化学
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电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
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IF 6.4
Wenxuan Wang,Shan Hu,Zelang Jian,Wen Chen
NASICON-based solid-state batteries have attracted much attention due to their high safety and high energy density. However, the unstable interface contact usually leads to sodium dendrite formation and cell failure during cycling. Deep insights into the evolution of the NASICON/Na interface are conducive to designing a morphologically stable interface. Herein, for the first time, we develop an asymmetric stripping/plating method to investigate the evolution process of the NASICON/Na interface via a facile two-electrode cell. It is revealed that the “initial voltage drop” phenomenon is closely related to the rapid lateral growth of the Na film on the NASICON electrolyte, which will result in void accumulation, interface contact loss, dendrite growth, and ultimate cell failure. Inspired by this failure mechanism, we developed a semiliquid wetting agent (sodium biphenyl/C composite, NBPC) to construct a continuous Na+ transport pathway at the NASICON/Na interface. The symmetric cell modified with NBPC shows excellent cycling stability at 0.2 mA cm–2. The solid-state battery paired with Na3V2(PO4)2 shows a high discharge capacity of 104 mAh g–1 and a high capacity retention of 96.3% after 100 cycles at 1C.
研究领域:
材料科学
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储能技术
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电化学
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固体离子学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Tao Sun,Shuo Wang,Mengyao Xu,Ning Qiao,Qizhen Zhu,Bin Xu
Sulfurized polyacrylonitrile (PAN@S) is a promising cathode material for room-temperature Na/S batteries but suffers from low conductivity and insufficient electrochemical activity, resulting in unsatisfactory actual capacity and rate performance. Herein, Ti3C2Tx MXene nanosheets are used as a conductive and catalytic binder to establish the PAN@S electrode, wherein MXene constructs a highly conductive framework for fast charge transport and provides high catalytic effect to improve the active material utilization and accelerate the redox kinetics significantly. Therefore, the PAN@S electrode bonded by MXene shows an electronic conductivity of 5.05 S cm–1, 4 orders of magnitude higher than the conventional electrodes bonded by the insulative polymer binders, and much decreased activation energy barrier and resistance. Consequently, the PAN@S electrode displays superior performance in terms of high capacity (697.3 mAh g–1 at 200 mA g–1), unparalleled rate capability (189.0 mAh g–1 at 20 A g–1), and excellent high-rate cycling performance (a capacity decay rate of ∼0.04% per cycle during 1000 cycles at 5 A g–1). This work provides a high-performance electrode for room-temperature Na/S batteries and shows the promising potential of conductive and catalytic MXene binders in boosting the performance of active materials.
研究领域:
储能
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材料科学
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电化学
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电池技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
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IF 4.1
Zhilong Wang,Chao Zhang,Zhongcheng Li,Zeyu Teng,Yu Wang,Kanghua Chen,Changjun Zhu
The uncontrolled growth of lithium dendrites and unstable solid-electrolyte interface (SEI) film limit the practical application of lithium metal anodes. In this study, we report a synergistic strategy utilizing a Li-Na alloy and fluoroethylene carbonate (FEC) for the in-situ construction of LiF/NaF-rich hybrid SEI film. This approach inhibits the growth of lithium dendrites and mitigates the volume expansion of lithium metal anodes during repeated plating/stripping. The results indicate that Na + is precipitated from the Li-Na alloy anodes during cycling, with Na + preferentially depositing on the surface of active Li crystals. Meanwhile, Li + is forced to deposit in the inactive regions around Na, thereby inhibiting the growth of lithium dendrites. The LiF/NaF-rich hybrid SEI film, which process high ionic conductivity and mechanical strength, form on the surface of Li-Na alloy anodes, alleviating the volume expansion of lithium metal anodes. When the molar ratio of Li/Na is 16, the Li-Na alloy exhibits excellent cycling stability and low overpotential. The Li-Na alloy||Sulfurized polyacrylonitrile (SPAN) full cell demonstrates a high reversible capacity of 630 mAh g −1 at 1000 mA g −1 , with 70 % capacity retention after 300 cycles, significantly higher than Li||SPAN (48 %). This strategy presents a potential solution for the practical application of long-life and high energy density lithium-sulfur batteries.
研究领域:
材料科学
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电化学
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储能技术
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电池技术
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
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2023
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IF 4.6
Peng-Fei Chen,Chun-Li Hu,Ming-Yang Cao,Xue-Ying Zhang,Jiang-Gao Mao
The first carbonatotellurites, AKTeO2(CO3) (A = Li, Na), have been successfully synthesized by using boric acid as the mineralizer. AKTeO2(CO3) (A = Li, Na) crystallize in the monoclinic space group P21/n (no. 14), and their structures exhibit the novel zero-dimensional (0D) [Te2C2O10]4– clusters, in which two [TeO4]4– groups form a [Te2O6]4– dimer via edge-sharing, with each side of the dimer attached by a [CO3]2– group via a Te–O–C bridge. The alkali metal cations occupy the voids between the 0D clusters and maintain the charge balance. The ultraviolet–visible–near-infrared diffuse reflectance spectra show that the short absorption cut-off edges of LiKTeO2(CO3) (LKTC) and NaKTeO2(CO3) (NKTC) are 248 and 240 nm, respectively, and LKTC exhibits the largest experimental band gap (4.58 eV) among all of the tellurites containing the π-conjugated anionic groups reported. Theoretical calculations revealed that they exhibit moderate birefringences of 0.029 and 0.040@1064 nm, respectively.
研究领域:
无机化学
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材料科学
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固态化学
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光学材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）