ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Wei Huang,Huihui Shangguan,Xiaowen Zheng,Christian Engelbrekt,Yuan Yang,Shuo Li,Kristian Mølhave,Xinxin Xiao,Xiaohang Lin,Lijie Ci,Pengchao Si
Transition metal phosphides are emerging as promising anode materials of sodium ion batteries (SIBs) due to their high performance in terms of capacity and operational stability. Highly isolated CoP nanoparticles encapsulated in 3D hollow nitrogen-doped carbon networks (CoP/HNC composite) are designed via polymerization of poly-dopamine (PDA) on ZIF-67 and the subsequent in-situ phosphorization. Ultrafine CoP nanoparticles (10 ± 2 nm) are decorated in nitrogen-doped carbon polyhedral shells in a porous 3D hollow architecture. Benefiting from the unique construction, the CoP/HNC electrode delivers a high reversible long cycle-life capacity of 223 mA h g −1 for sodium storage at 500 mA g −1 after 700 cycles. DFT simulations indicate that Na atoms strongly bound to CoP surfaces, and significantly concentrate near CoP surfaces, beneficial for the Na ions storage in this composite material. These results suggest the CoP/HNC composite can be a promising anode material for SIBs. Besides, the designed strategy of CoP/HNC composite could be applied to fabricate other metal phosphides for electrochemical storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2021
·
IF 9.676
Lin Li,Zhe Hu,Yong Lu,Shuo Zhao,Qiu Zhang,Qiannan Liu,Zhenhua Yan,Shu-Lei Chou
Metal phosphides have shown great potential for potassium-ion batteries because of their high theoretical specific capacity. Nevertheless, most of the metal phosphide anodes are plagued by rapid capacity decay (caused by the large volume changes during the discharge/charge process), which would restrict their further practical application. Herein, a chemically bonded CuP 2 /C composite was prepared by a facile high-energy ball milling method. A potassium bis(trifluoromethanesulfonyl)imide (KFSI)-based electrolyte was adopted instead of a conventional KPF 6 -based electrolyte for the CuP 2 /C composite anode. Benefiting from the synergistic effects of the formation of strong P–O–C chemical bonds and the KFSI-based electrolyte, the CuP 2 /C composite anode exhibited high reversible capacity (451.4 mAh g −1 at 50 mA g −1 ), excellent rate performance (123.5 mAh g −1 at 1000 mA g −1 ), and superior cycling stability (300 mAh g −1 after 100 cycles). This work paves the way for the development of high-performance CuP 2 anode for potassium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yongmin Huang,Jiaxing Ouyang,Xun Tang,Yao Yang,Jiangfeng Qian,Juntao Lu,Li Xiao,Lin Zhuang
This work reports a novel Ga-based material, NiGa2O4, which is typically used as a photocatalyst for water splitting, as an anode for Li-ion battery with a long cycle life. High-surface-area reduced graphene oxide (rGO) has been used as the conductive substrate to avoid the aggregation of NiGa2O4 nanoparticles (NPs). Because the size and shape of NiGa2O4 are very sensitive to the pH of the precursor, ethylene glycol has been employed as the solvent, as well as the reduction agent to reduce GO, to avoid using extra surfactants and also to avoid the variation of pH of the precursor. The obtained NiGa2O4/rGO composite possesses high capacity and long cycle life (2000 cycles, 2 A/g), with NiGa2O4 NPs around 3–4 nm that are uniformly distributed on the rGO surface. Full cell performance with LiCoO2 as cathode has also been studied, with the average loss of 0.04% per cycle after 100 cycles (C/2 of LiCoO2). The long cycle life of the composite was ascribed to the self-healing feature of Ga0 formed during charging.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Frontiers of Materials Science
·
2023
·Vol. 17
·期 4
·1-10
·
IF 2.7
Chen Hang,Yuan Xinghan,Qin Hongmei,Xiong Chuanxi
Rechargeable aqueous zinc-ion batteries (AZIBs) are the most promising candidates for the energy storage due to their high safety, rich resources, and large specific capacity. However, AZIBs using neutral or slightly acidic electrolytes still face side effects and zinc dendrites on the anode surface. To stabilize the Zn anode, a chemically stable and multi-functional coating of polyvinylidene fluoride (PVDF) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) was prepared on the Zn surface. The anhydride groups in 6FDA can improve the hydrophilicity, promoting the migration of zinc ions. Besides, PVDF is compatible with 6FDA because of the presence of organic F-containing groups, which can also effectively reduce the nucleation overpotential and exhibit the dendrite-free Zn deposition/stripping. The PVDF/6FDA@Zn symmetric cell can cycle for 5000 h at a current density of 0.5 mA·cm −2 , maintaining the extremely low polarization voltage and overpotential of 28 and 8 mV, respectively. The PVDF/6FDA@Zn∥MnO 2 full cell can remain a specific capacity of ∼90 mAh·g −1 after 2000 cycles at 1.5 A·g −1 . This simple method achieves a reversible Zn anode, providing an inspiring strategy for ultra-long-cycle AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Xing Gao,Lei Liu,Lei Zu,Huiqin Lian,Xiuguo Cui,Xiaodong Wang
A facile dual-temperature zone heating strategy has been developed to fabricate fibrous phosphorus (FP) through bottom-up growth with the aid of the Sn 24 P 19.3 I 8 catalyst. The resultant FP exhibits a high purity of over 99 % and a unique long-term ordering lamellar structure . The as-prepared FP is further mixed with graphite (G) to construct a FP-G composite anode for lithium-ion batteries (LIBs). Compared to conventional crystalline red phosphorus , the developed FP shows higher conductance, smaller lateral dimensions, shorter Li + transport distance, and faster ion diffusion. This ensures that the FP-G anode gains high rate performance and long cycle life for LIBs. The FP-G anode not only exhibits a high specific capacity of 1533.2 mA h g −1 at 0.5 A g −1 but also presents a high retention capacity of 1048.4 mA h g −1 at a high current density of 4.0 A g −1 after 1300 charge/discharge cycles, indicating a high cycle stability and fast reaction kinetics. Such outstanding characteristics are attributed to the unique lamellar fibrous texture and high aspect ratio of the developed FP, which provides more active sites and structural stability for the electrode material . This study provides a new approach for developing phosphorus-based electrode materials and expands their application range in LIBs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2018
·Vol. 30
·期 32
·1802563
·
IF 21.95
Yanrong Wang,Ziteng Liu,Caixing Wang,Xu Yi,Renpeng Chen,Lianbo Ma,Yi Hu,Guoyin Zhu,Tao Chen,Zuoxiu Tie,Jing Ma,Jie Liu,Zhong Jin
Rechargeable magnesium batteries have attracted increasing attention due to the high theoretical volumetric capacities, dendrite formation-free characteristic and low cost of Mg metal anodes. However, the development of magnesium batteries is seriously hindered by the lack of capable cathode materials with long cycling life and fast solid-state diffusion kinetics for highly-polarized divalent Mg 2+ ions. Herein, vanadium tetrasulfide (VS 4 ) with special one-dimensional atomic-chain structure is reported to be able to serve as a favorable cathode material for high-performance magnesium batteries. Through a surfactant-assisted solution-phase process, sea-urchin-like VS 4 nanodendrites are controllably prepared. Benefiting from the chain-like crystalline structure of VS 4 , the S 2 2- dimers in the VS 4 nanodendrites provide abundant sites for Mg 2+ insertion. Moreover, the VS 4 atomic-chains bonded by weak van der Waals forces are beneficial to the diffusion kinetics of Mg 2+ ions inside the open channels of VS 4 . Through a series of systematic ex situ characterizations and density functional theory calculations, the magnesiation/demagnesiation mechanism of VS 4 are elucidated. The VS 4 nanodendrites present remarkable performance for Mg 2+ storage among existing cathode materials, exhibiting a remarkable initial discharge capacity of 251 mAh g -1 at 100 mA g -1 and an impressive long-term cyclability at large current density of 500 mA g -1 (74 mAh g -1 after 800 cycles).
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Lvyin Hong,Qianting Zhou,Yongsheng Chen,Yafeng Li,Mingdeng Wei
Herein, a one-step route has been developed for synthesizing terbium-phosphine (Tb-(Ph) 3 P) compound, which exhibited an excellent rate capability and an outstanding long cycling stability. The highest specific capacitance of 1866 F g −1 has been obtained at 2 A/g in 6 M KOH, and the capacitance retention of 81.02% has also been achieved at 10 A/g after 30,000 cycles, resulted in a maximum energy density of 93.3 W h kg −1 and a maximum power density of 6.04 kW kg −1 . Such an excellent performance might be attributed to the insolvability and intrinsic characteristics of the Tb-based phosphine complexes, which provided abundant active sites for the charge storage and conductive networks for electron transport. Moreover, a flexible quasi-solid-state asymmetric supercapacitor composed of Tb-(Ph) 3 P and active carbon has been fabricated, and a specific capacitance of 275 mF cm −2 at a current density of 2 mA cm −2 , and a capacitance retention of 100% after 10,000 cycles at 10 mA cm −2 have been respectively achieved, exhibiting an excellent electrochemical property. Thus, the present work might provide a new strategy for designing new metal–organic complex materials and their applications in energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2020
·Vol. 16
·期 13
·1906025
·
IF 11.459
Lecai Wang,Li Li,Hanyong Wang,Jingbo Yang,Yitian Ma,Jiawei Wu,Feng Wu,Renjie Chen
Ni-rich Li-ion cathode materials promise high energy density, but are limited in power density and cycle life, resulting from their poor dynamic characteristics and quick degradation. On the other hand, capacitor electrode materials promise high power density and long cycle life but limited capacities. A joint energy storage mechanism of these two kinds is performed in the material-compositional level in this paper. A valence coupling between carbon π-electrons and O 2− is identified in the as-prepared composite material, using a tracking X-ray photoelectron spectroscopy strategy. Besides delivering capacity simultaneously from its LiNi 0.8 Co 0.1 Mn 0.1 O 2 and capacitive carbon components with impressive amount and speed, this material shows robust cycling stability by preventing oxygen emission and phase transformation via the discovered valence coupling effect. Structural evolution of the composite shows a more flattened path compared to that of the pure LiNi 0.8 Co 0.1 Mn 0.1 O 2 , revealed by the in situ X-ray diffraction strategy. Without obvious phase transformation and losing active contents in this composite material, long cycling can be achieved.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Energies
·
2022
·Vol. 15
·期 13
·4932
·
IF 3.252
Zeyan Zhou,Taotao Zeng,Haoran Zhang,Ding Chen
Vanadium nitride (VN) with a wide working window has been identified as a promising electrode material candidate for batteries due to the high specific capacitance and the excellent electrical conductivity. Here, we have successfully prepared VCN nanobelts, which display mesoporous structure with high specific surface area (54.4 m2g−1) and the total pore volume was 0.266 cm3g−1. Furthermore, the prepared flexible Zn-ion battery (FZIB) with VCN-5 not only exhibited high specific capacitance (81 μAh cm−2), excellent rate capability, and long cyclic durability (77% after 1000 cycles at 0.6 mA cm−2) but also had the characteristics of flexibility. This FZIB is important to reduce the difficulty in thermal management and can be used in a series of applications, including wearable electric devices.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
RARE METALS
·
2024
·
IF 9.6
Liu Ke-Xin,Tan Ran,Zheng Zhong,Zhao Rui-Rui,Ülgüt Burak,Ai Xin-Ping,Qian Jiang-Feng
Lithium metal, with its exceptionally high theoretical capacity, emerges as the optimal anode choice for high-energy-density rechargeable batteries. Nevertheless, the practical application of lithium metal batteries (LMBs) is constrained by issues such as lithium dendrite growth and low Coulombic efficiency (CE). Herein, a roll-to-roll approach is adopted to prepare meter-scale, lithiophilic Sn-modified Cu mesh (Sn@Cu mesh) as the current collector for long-cycle lithium metal batteries. The two-dimensional (2D) nucleation mechanism on Sn@Cu mesh electrodes promotes a uniform Li flux, facilitating the deposition of Li metal in a large granular morphology. Simultaneously, experimental and computational analyses revealed that the distribution of the electric field in the Cu mesh skeleton induces Li inward growth, thereby generating a uniform, dense composite Li anode. Moreover, the Sn@Cu mesh-Li symmetrical cell demonstrates stable cycling for over 2000 h with an ultra-low 10 mV voltage polarization. In Li||Cu half-cells, the Sn@Cu mesh electrode demonstrates stable cycling for 100 cycles at a high areal capacity of 5 mAh·cm −2 , achieving a CE of 99.2%. This study introduces a simple and large-scale approach for the production of lithiophilic three-dimensional (3D) current collectors, providing more possibilities for the scalable application of Li metal batteries. Graphical abstract
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Jiajia Ye,Guang Xia,Xuting Li,Zhiqiang Zheng,Zhanghua Fu,Qingshuai Zhang,Cheng Hu
The Ni 2 P anode own high theoretical capacity but still suffer from big volume expansion thus resulting sluggish electrochemical kinetics in K-ion batteries. Herein, we design and synthesize the urchin-like Ni 2 P yolk-shell microspheres encapsulated into N-doped carbon shells (Ni 2 P@N-C) for the first time through one-step hydrothermal followed a phosphidation/carbonization process. The unique urchin-like morphology provides fast charge transfers to the active sites for improved K-ion storage at high current densities. The yolk-shell structure couples with the nitrogen-doping carbon layer to effectively relieve the volume expansions while enhancing the conductivity of the whole anode composite. As a result, Ni 2 P@N-C electrode delivers an ultrahigh capacity of 172.6 mAh g −1 at 2000 mA g −1 after long time of 3000 cycles and shows outstanding rate performance of 136.6 mAh g −1 at 5000 mA g −1 . Lastly, ex situ X-ray diffraction analysis of K + ion insertion/extraction into/from the Ni 2 P@N-C electrode shows that potassium ion storage mechanism was to be Ni 2 P + 3K + +3e - ↔K 3 P + 2Ni.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Huajie Lan,Lei Tian,Wenfeng Wang,Yuan Li,Shumin Han,Lu Zhang
The currently used β -Ni(OH) 2 for alkaline nickel batteries are falling short of higher capacity demand. In contrast, α -Ni(OH) 2 with high theoretical capacity can address this need. However, the α -Ni(OH) 2 suffers from poor stability and intrinsic low electrical conductivity. Herein, we designed La/Ce-doped spherical α -Ni(OH) 2 and study the effect of La/Ce on the structure and electrochemical properties of α -Ni(OH) 2 . The increased specific surface area of the α -Ni(OH) 2 with La/Ce doping reduces the electron transfer resistance. The La/Ce-doped α -Ni(OH) 2 with 2 at% La (Ni-La-2) and 3 at% Ce (Ni-Ce-3) doping deliver high capacities of ∼365 mAh g –1 and ∼373 mAh g –1 , respectively, which is only 309 mAh g –1 for the pure α -Ni(OH) 2 . Meanwhile, the La/Ce-doping stabilizes the structural robustness of the α -Ni(OH) 2 during cycling. Notably, Ni-La-2 shows a superior stable cycling life with a capacity retention of ∼95 % after 400 cycles, which is ∼20 % higher than that of pure α -Ni(OH) 2 .
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）