INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·Vol. 44
·期 39
·22250-22262
·
IF 4.084
Hongri Wan,Xiaofang Hu
Nitrogen/sulfur co-doped disordered porous biocarbon was facilely synthesized and applied as anode materials for lithium/sodium ion batteries. Benefiting from high nitrogen (3.38 wt%) and sulfur (9.75 wt%) doping, NS 1-1 as anode materials showed a high reversible capacity of 1010.4 mA h g −1 at 0.1 A g −1 in lithium ion batteries . In addition, it also exhibited excellent cycling stability, which can maintain at 412 mAh g -1 after 1000 cycles at 5 A g −1 . As anode materials of sodium ion batteries , NS 1-1 can still reach 745.2 mA h g −1 at 100 mAg -1 after 100 cycles. At a high current density (5 A g -1 ), the reversible capacity is 272.5 mA h g −1 after 1000 cycles, which exhibits excellent electrochemical performance and cycle stability. The preeminent electrochemical performance can be attributed to three effects: (1) the high level of sulfur and nitrogen; (2) the synergic effect of dual-doping heteroatoms; (3) the large quantity of edge defects and abundant micropores and mesopores , providing extra Li/Na storage regions. This disordered porous biocarbon co-doped with nitrogen/sulfur exhibits unique features, which is very suitable for anode materials of lithium/sodium ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能碳材料
✓ 已验证
DOI
高影响因子
Energy Technology
·
2019
·Vol. 7
·期 6
·1801022
·
IF 3.163
Yang Liu,Qiang Ru,Yuqing Gao,Ping Gao,Fuming Chen,Lingzhi Zhao,Xianhua Hou
Antimony and red phosphorus (RP) hybrid is harvested via a facile mechanical milling strategy. Simultaneously, graphene sheets are introduced to boost the electronic transmission and mitigate the agglomeration of particles. In contrast to pristine Sb and RP electrodes, Sb/P/C hybrid affords comparably promising electrochemical performances. As anodes for lithium-ion batteries, Sb/P/C electrode depicts a reversible capacity of 869 mAh g −1 under 200 mA g −1 after 50 cycles and an excellent rate stability such as 452 mAh g −1 at 3200 mA g −1 . When used for sodium-ion batteries, the hybrid also shows moderate capacities of 544.8 and 511 mAh g −1 at the current of 50 and 200 mA g −1 after 50 cycles, respectively. These excellent properties can be ascribed to the synergetic effect of decreased particle size of milled Sb/P/C, large contact area, adequate energy storage sites, and enhanced electrical conductivity.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
无机化学
·
固体物理
·
电池技术
✓ 已验证
DOI
高影响因子
Advanced Sustainable Systems
·
2024
·Vol. 8
·期 8
·2400098
·
IF 6.5
Fuyu Xiao,Wenbin Lai,Shihan Zeng,Lingjun He,Mingyang Ge,Fenqiang Luo,Peixun Xiong,Hui Lin,Chuyuan Lin,Yongjin Luo,Jixiang Zhang,Qingrong Qian,Qinghua Chen,Lingxing Zeng
The resource scarcity and pollution leakage risk caused by discarding the spent power lithium-ion batteries has aroused growing concern. Recovering and regenerating the cathode material from spent power lithium-ion batteries in an easy and environmentally friendly manner remains a significant challenge and an area of focus in battery research. Hence, a green and convenient method to recover FePO 4 from spent LiFePO 4 cathode powder by using Na 2 S 2 O 8 as an oxidizer and as cathode materials for lithium/sodium-ion batteries (LIBs/SIBs) is reported. Benefiting from the remarkable graphene oxide (GO) and vanadium oxide (V 2 O 5 ) coating, the regenerated FePO 4 –V 2 O 5 –graphene oxide (FePO 4 –V 2 O 5 –GO) is suitable for Li/Na storage (153 mAh g −1 at 0.2C/118 mAh g −1 at 0.5C). The high capacity retention, that stable for 300 cycles in LIBs and 300 cycles for SIBs, is also realized due to the stable structure. This work provides a green strategy for regenerating the cathode of spent lithium-ion batteries and designing cathodes of alkali metal ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
环境科学
·
资源回收
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL COMMUNICATIONS
·
2015
·Vol. 51
·期 15
·3227-3230
·
IF 6.834
Maowen Xu,Jun-Ke Hou,Yu-Bin Niu,Guan-Nan Li,Yu-Tao Li,Chang Ming Li
Na2.65Ti3.35Fe0.65O9 rods were prepared by a simple solid-state route and coated with carbon to enhance their electronic conductivity. For the first time, Na2.65Ti3.35Fe0.65O9 was explored as an anode material for Na-ion batteries to deliver a discharge capacity of 137.5 mA h g−1 at a current rate of 40 mA g−1. The charge/discharge capacity of a carbon-coated sample increased by 46.3% to achieve 201.1 mA h g−1.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
IONICS
·
2019
·Vol. 26
·期 2
·627-637
·
IF 2.289
Zhai Huanhuan,Shuai Yi,Wang Yu,Chen Kanghua
As a negative electrode material, the main drawbacks of Li 4 Ti 5 O 12 (LTO) are its low electric conductivity and poor Li-ion diffusion coefficient. Fortunately, elements modification to address these problems is an effective method. Herein, we firstly report Ni and F co-modified LTO material which is synthesized via a solid-state reaction. Powder X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy were conducted to investigate the structure and morphology. Afterwards, we surprisingly find that Ni and F co-modification can reduce the overall charge transfer resistance of LTO for part of Ti 4+ converts into Ti 3+ and Ni 2+ ions supply the charge carriers. When test in battery, a superior discharge capacity of 236.1 mAh g −1 at 0.036 A g −1 is obtained, much higher than that of pristine LTO (196.9 mAh g −1 ). Furthermore, it still retains a discharge capacity of 174.6 mAh g −1 after 200 cycles at 0.18 A g −1 and exhibits an excellent rate performance.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
固体化学
✓ 已验证
DOI
高影响因子
CHEMICAL COMMUNICATIONS
·
2016
·Vol. 52
·期 64
·9969-9971
·
IF 6.567
Yan Zhang,Yubin Niu,Min-Qiang Wang,Jingang Yang,Shiyu Lu,Jin Han,Shu-Juan Bao,Maowen Xu
In this communication, we designed and synthesized a novel calcium–organic framework and presented it as an anode material for sodium-ion batteries. The results show that it delivers a reversible capacity of higher than 140 mA h g−1 even after 300 cycles. The remarkable performance is attributed to the high structural stability and extremely low solubility of the calcium–organic framework in electrolytes.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
功能材料
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Enze Xu,Yan Zhang,Hui Wang,Zhifeng Zhu,Junjie Quan,Yajing Chang,Pengcheng Li,Dabin Yu,Yang Jiang
Establishing advanced sodium-ion batteries (SIBs) with high energy density and eco-friendly electrode materials are still far from satisfactory due to the large-size of sodium-ions and sluggish redox kinetics during electrochemical processes. Herein, a novel ultrafast kinetics net electrode assembled via MoSe 2 /MXene heterojunction is synthesized by a simple hydrothermal method followed by thermal annealing. Featuring the Van der Waals force interaction between MoSe 2 and MXene , the volumetric change during the sodium ions insertion/extraction courses is effectively restrained, and the reaction kinetics is greatly enhanced further. Meanwhile, both the high electrical and ion conductivity (lower diffusion barrier between Na + /MXene ~0.066 eV) provided by the unique MXene based net heterostructure of our hybrid materials, as evidenced by DFT calculations, are beneficial to the transportation of sodium ions, thus enabling an outstanding rate and long-cycling capability. As a result, the fabricated cells exhibit high reversible capacities of 490 mAh g −1 at 1 A g −1 , as well as 250 mAh g −1 at a high current of 10 A g −1 with a coulombic efficiency of 99.8%, indicating the excellent electrochemical performance of our hybrid materials, especially at high current. This novel net MoSe 2 /MXene heterostructure, combined with our simple synthesis strategy together, are expected to have great potential in sodium-ions storage application.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
固态物理
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 19
·9432-9439
·
IF 3.925
Huibin Guan,Dong Feng,Qi Liu,Tianbiao Zeng
Among the tin-based composites, stannous sulfide (SnS) is a prospective material to serve as an anode for lithium-ion batteries (LiBs) owing to its high theoretical-capacity, layer-structure for fast Li+ diffusion paths, and low toxicity. However, severe volume expansion/shrinkage exfoliates the electrode coating, leading to the severe loss of active materials. Herein, free volume was introduced into SnS to relieve the sequelae of volume expansion/shrinkage creatively, which effectively improved the cyclability of the SnS-based anode. The as-synthesized SnS/G-15% exhibited overall optimal electrochemical performances, i.e., the highest reversible capacity and best cyclability over pure SnS, SnS/G-5% and SnS/G-25%. Ex situ scanning electron microscopy images also illustrated that no cracks were generated in the cycled SnS/G-15% electrode. This work highlights an efficient and cost effective approach for the synthesis of long-cycle life and high-cyclability anodes.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Qiang Ru,Xiong Song,Yudi Mo,Lingyun Guo,Shejun Hu
Carbon nanotubes (CNTs) are adopted to modify ZnCo 2 O 4 (ZCO) electrode, and a novel porous polyhedral structure ZCO/CNTs composites are prepared by a facile and scalable hydrothermal process, and the pure ZCO with cubic structure is also synthesized for comparison. The as-prepared materials are characterized by field emission scanning electron microscopy (FESEM). The results demonstrate that the introduced of CNTs has great effects on the nanostructure and electrochemical performance of the samples. The CNTs among the polyhedral structure ZCO/CNTs composites can provide better mechanical robustness, more contact between Li + and electrodes, and more effective electron transmission than the pure ZCO with cubic structure. When tested as anode materials for lithium ion batteries , the ZCO/CNTs composites exhibit a high initial coulombic efficiency of 83.9%, a high specific capacity of ∼864.6 mAh g −1 at a current rate of 100 mA g −1 after 150 cycles, as well as a good rate capability at elevated current rates, such as, ∼924.3 and ∼605.7 mAh g −1 at current rates of 500 and 2000 mA g −1 , respectively. This work would be meaningful in the preparation of complex oxides/carbon composites with porous nanostructure as anodes for LIBs.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2020
·Vol. 5
·期 1
·245-252
·
IF 0
Chunli Wang,Lianshan Sun,Bingbing Tian,Yong Cheng,Limin Wang
As important ingredients in lithium-ion battery, the Coulombic efficiency and power density greatly impact the electrochemical performances. Although recent literatures have reported nano-porous materials to enhance the specific capacities, intrinsic drawbacks such as poor initial Coulombic efficiency and low volumetric capacity could not be avoided. Herein, we propose a strategy to prepare carbon supported MoO 2 spheres used for lithium-ion battery with high volumetric capacity density. A high initial Coulombic efficiency of 76.5% is obtained due to limited solid electrolyte interface film formed on the exposed surface. Meantime, the sample with an optimal carbon content and a proper structural strength reveals a higher reversible capacity of 956 mA h g −1 than the theoretical capacity of crystalline MoO 2 (838 mA h g −1 ) and a high capacity retention ratio of 96.4% after 100 cycles at 0.5 A g −1 . And an effective compaction capacity density (under 5 MPa) of 670 mA h cm −3 of the spheres proves its potential value in practical applications.
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
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yixuan Zhang,Guo-Qiang Liu,Danlei Qiao,Jiaguan Chen,Qiang Sun,Lei Wen
This work focuses on the effect of the of Mn 3+ /Mn 4+ ratio in the reactants on the structure and electrochemical properties of NaMn 0.9 Cu 0.1 O 2 cathode materials for sodium-ion batteries. By systematically varying the manganese valence states in the reactants, we observed a phase transition from the β-phase to the P2-phase with increasing Mn 3+ concentrations in the reactants, contrary to the expected favorability of the β-phase at higher Mn 3+ levels. This finding suggests a complex interplay between the valence states of the reactants and phase formation mechanisms, which needs further investigation. Additionally, electrochemical testing indicated that the phase composition significantly impacts the electrochemical performance of the material. Specifically, the M0 sample, possessing the optimal P2/β ratio, exhibited excellent electrochemical performances, achieving a high initial discharge capacity of 155.1 mA h g −1 and remains 88.1 % after 40 cycles. These results emphasize the importance of precursor selection and valence management in the development of high-performance cathode materials for sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
固态化学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2022
·Vol. 50
·期 7
·100101
·
IF 1.193
Ranehipura Dewage Lahiru SANDARUWAN,Bo-Yu WANG,Suwanda Arachchige Don Rumesh MADHUSANKA,Shun-Chao MA,Hong-Yu WANG
Transition to aqueous electrode fabrication of lithium ion batteries (LIBs) with green binder is certainly profitable and imperative in terms of economic benefit and environmental wellness. However, aqueous processing of cathode in LIB, especially the ternary LiNi x Co y Mn z O 2 (NCM), is still problematic and novel water-soluble binder should be developed to boost the electrochemical performances of cathode. In this regard, commercially available white latex (WL), cooperating with CMC (carboxymethyl cellulose), is employed as water-processable binder mixture for manufacturing NCM cathode. Interestingly, the prepared NCM cathode assisted by WL/CMC mixture exhibits improved electrochemical performances including better initial reversible capacity of 161.7 mAh g −1 at 0.5 C current density, long-term cyclability with a reversible capacity of 155 mAh g −1 along with high-capacity retention of around 96% after cycling 200 times, and even excellent rate capability, which are superior to those of the conventional counterpart base on polyvinylidene fluoride (PVdF). Moreover, the NCM|graphite full cell, which is absolutely based on this novel WL binder, also demonstrates the outstanding electrochemical behaviors.
研究领域:
电化学
·
能源材料
·
锂电池技术
·
高分子材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）