JOURNAL OF MATERIALS RESEARCH
·
2018
·Vol. 33
·期 16
·2376-2384
·
IF 1.495
Yuanyuan Su,Ying Zhang,Ronglan Zhang,Fei Yang,Jianshe Zhao
Two series of binuclear metal phthalocyanine complexes M2(PcTN)2Nap and M2(PcTA)2Nap (M = Mn2+, Fe2+, Co2+, Cu2+) were designed and synthesized through the liquid solvent method and amination reaction. Elemental analysis, IR, and UV-vis spectroscopy were applied to characterize the compounds. To evaluate their catalytic performance, all the compounds were respectively added into the electrolyte of Li/SOCl2 battery systems as well as three-electrode systems for cyclic voltammetry (CV) measurements. The research studies indicate that the average discharge voltage and discharge time of the battery could be effectively enhanced by 0.2440 V and 810.7 s when compared with the battery in the absence of the compounds. As for capacities of the batteries containing catalysts, they were also found to have an improvement of 51.78–91.62%. Among the effects of diverse metal ions on the catalytic performance of phthalocyanines, the complexes whose center metal ions were Mn2+ or Co2+ exhibited relatively high catalytic performance. Meanwhile, combined with experimental results of CV analyses, the suggested catalytic mechanism of binuclear phthalocyanines for catalyzing Li/SOCl2 batteries had been proposed.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Chengkai Pang,Fei Ding,Wenbin Sun,Jiaquan Liu,Mingming Hao,Ying Wang,Xingjiang Liu,Qiang Xu
A novel dimethyl sulfoxide/1,3-dioxolane (DMSO/1,3-DO) based electrolyte is proposed for lithium/carbon fluorides (Li/CF x ) batteries to enhance the discharge voltage plateau and energy density. Conductivities of the electrolyte of 1 mol L −1 LiBF 4 /DMSO+1,3-DO with different volume ratios are not identical, which have a maximum of 14.85 mS cm −1 . From the tests of galvanostatic discharge, the discharge voltage plateau of the Li/CF x battery with an electrolyte of 1 mol L −1 LiBF 4 /DMSO+1,3-DO (5:5, v:v) can reach 2.69 V at 0.1 C, delivering a maximum discharge capacity of 831 mAh g −1 and the highest energy density of 2196 Wh kg −1 . Compared to Li/CF x batteries with an electrolyte of 1 mol L −1 LiBF 4 /PC+DME (5:5, v:v), the energy density of Li/CF x batteries with an electrolyte of 1 mol L −1 LiBF 4 /DMSO+1,3-DO (5:5, v:v) has been improved more than 12%. With the help of XRD, SEM, TEM, EIS, FT-IR and GC-MS analysis, the results of this work suggest that DMSO/1,3-DO based electrolyte can significantly improve the discharge performance of Li/CF x batteries and keep a good electrochemical stability during discharge. The main reason for improvement of discharge performance is decreasing of both the overpotential of electrochemical polarization of CF x cathodes during discharge and the overpotential of ohmic polarization by increasing the ion conductivity of electrolyte.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Zhuan Ji,Bo Han,Haitao Liang,Chenggang Zhou,Qiang Gao,Kaisheng Xia,Jinping Wu
We reported a rhombohedral Na-rich nickel hexacyanoferrate (r-NiHCF) with high discharge voltage, which also possesses long cycle stability and excellent rate capability when serving as the cathode material of Na-ion batteries. First-principles calculations suggest that the high working voltage of r-NiHCF is correlated to the asymmetric residence of Na+ ions in the rhombohedral framework in parallel with the low charge density at the Fe2+ ions. In both aqueous and ether-based electrolytes, r-NiHCF exhibits higher voltage than that of cubic NiHCF. Rate and cycle experiments indicate that r-NiHCF delivers a specific capacity of 66.8 mAh g–1 at the current density of 80 mA g–1, which is approximate to the theoretical capacity of r-NiHCF. A capacity retention of 96% can be achieved after 200 cycles. The excellent stability of r-NiHCF can be assigned to the absence of rhombohedral–cubic phase transition and negligible volume variation during electrochemical redox, as proven by the ex situ XRD patterns at different depths of charge/discharge and the DFT calculations, respectively.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2018
·
IF 4.66
Wenfei Wei,Long Li,Lei Zhang,Jianhe Hong,Gang He
Despite having promising Li storage properties such as multielectron reactions and fast kinetics, organic electrode materials exhibit poor cycling stability, which is partly caused by their tendency to dissolve in liquid electrolytes . In this work, an all-solid-state Li-organic battery with excellent cycling stability and high discharge voltage was designed, in which poly(2-chloro-3,5,6-trisulfide-1,4-benzoquinone) (PCTB) and poly(ethylene glycol) (PEO)-based composite polymer electrolyte (CPE) served as the cathode and electrolyte respectively. The PEO-LiClO 4 -10 wt% Li 0.3 La 0.566 TiO 3 (LLTO) electrolyte has an excellent ionic conductivity of 7.99 × 10 −4 S cm −1 at 343 K. Furthermore, the all-solid-state battery exhibited a high discharge capacity of 104 mAh g −1 with an average potential of 2.72 V at 343 K. After 300 cycles, 90% of the maximum capacity was retained. These results shed light on the application of carbonyl compounds in conjunction with PEO-based electrolytes for Li-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-11
·
IF 16.6
Zhang Xiangyong,Wei Hua,Li Shizhen,Ren Baohui,Jiang Jingjing,Qu Guangmeng,Lv Haiming,Liang Guojin,Chen Guangming,Zhi Chunyi,Li Hongfei,Liu Zhuoxin
Aqueous copper-based batteries have many favourable properties and have thus attracted considerable attention, but their application is limited by their low operating voltage originating from the high potential of copper negative electrode (0.34 V vs. standard hydrogen electrode). Herein, we propose a coordination strategy for reducing the intrinsic negative electrode redox potential in aqueous copper-based batteries and thus improving their operating voltage. This is achieved by establishing an appropriate coordination environment through the electrolyte tailoring via Cl − ions. When coordinated with chlorine, the intermediate Cu + ions in aqueous electrolytes are successfully stabilized and the electrochemical process is decoupled into two separate redox reactions involving Cu 2+ /Cu + and Cu + /Cu 0 ; Cu + /Cu 0 results in a redox potential approximately 0.3 V lower than that for Cu 2+ /Cu 0 . Compared to the coordination with water, the coordination with chlorine also results in higher copper utilization, more rapid redox kinetics, and superior cycle stability. An aqueous copper-chlorine battery, harnessing Cl − /Cl 0 redox reaction at the positive electrode, is discovered to have a high discharge voltage of 1.3 V, and retains 77.4% of initial capacity after 10,000 cycles. This work may open up an avenue to boosting the voltage and energy of aqueous copper batteries.
研究领域:
电化学
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材料科学
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电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Li Wei,Zhang Menghang,Sun Xinyi,Sheng Chuanchao,Mu Xiaowei,Wang Lei,He Ping,Zhou Haoshen
Li-CO 2 batteries offer a promising avenue for converting greenhouse gases into electricity. However, the inherent challenge of direct electrocatalytic reduction of inert CO 2 often results in the formation of Li 2 CO 3 , causing a dip in output voltage and energy efficiency. Our innovative approach involves solid redox mediators, affixed to the cathode via a Cu(II) coordination compound of benzene-1,3,5-tricarboxylic acid. This technique effectively circumvents the shuttle effect and sluggish kinetics associated with soluble redox mediators. Results show that the electrochemically reduced Cu(I) solid redox mediator efficiently captures CO 2 , facilitating Li 2 C 2 O 4 formation through a dimerization reaction involving a dimeric oxalate intermediate. The Li-CO 2 battery employing the Cu(II) solid redox mediator boasts a higher discharge voltage of 2.8 V, a lower charge potential of 3.7 V, and superior cycling performance over 400 cycles. Simultaneously, the successful development of a Li-CO 2 pouch battery propels metal-CO 2 batteries closer to practical application.
研究领域:
电化学
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材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Kun Liu,Yujing Ling,Xianglong Guan,Ke Hu,Angli Zhang,Kaiqi Liu,Haoyi Li,Guangnian Xu,Xu-Cheng Fu
The commercialization of magnesia-air batteries (Mg-air) necessitates the development of highly efficient, cost-effective, and durable electrocatalysts for oxygen reduction reaction (ORR), replacing expensive and unstable precious metal electrocatalysts. A hard template-assisted synthesis of FeCo nanoparticles immobilized on N-doped porous carbon (Fe-Co-C-N) for the ORR is reported. The half-wave potential of Fe-Co-C-N for ORR (E1/2=0.88 V vs. RHE) is elevated by 40 mV compared to that of 20 wt% Pt/C (E1/2=0.84 vs. RHE). The catalyst exhibits exceptional catalytic performance and remarkable stability. The discharge voltage of the Mg-air battery, utilizing Fe-Co-C-N as the cathode catalyst (1.29 V), surpasses that of the battery employing 20 wt% Pt/C as the cathode catalyst (1.28 V). The Mg-air battery with Fe-Co-C-N as the cathode catalyst exhibited excellent discharge stability and maintained a stable discharge for over 200 hours. The present study offers valuable insights into the structural design and regulatory mechanisms governing the performance of M-N-C catalysts in Mg-air batteries.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 15
·1269
·
IF 4.4
Haobin Wu,Xin Huang,Min Xiao,Shuanjin Wang,Dongmei Han,Sheng Huang
High-energy-density Li-CO2batteries are promising candidates for large-capacity energy storage systems. However, the development of Li-CO2batteries has been hindered by low cycle life and high overpotential. In this study, we propose a CO2-based thermoplastic polyurethane (CO2-based TPU) with CO2adsorption properties and excellent self-healing performance to replace traditional polyvinylidene fluoride (PVDF) as the cathode binder. The CO2-based TPU enhances the interfacial concentration of CO2at the cathode/electrolyte interfaces, effectively increasing the discharge voltage and lowering the charge voltage of Li-CO2batteries. Moreover, the CO2fixed by urethane groups (-NH-COO-) in the CO2-based TPU are difficult to shuttle to and corrode the Li anode, minimizing CO2side reactions with lithium metal and improving the cycling performance of Li-CO2batteries. In this work, Li-CO2batteries with CO2-based TPU as the multifunctional binders exhibit stable cycling performance for 52 cycles at a current density of 0.2 A g−1, with a distinctly lower polarization voltage than PVDF bound Li-CO2batteries.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Wenbin Luo,Yanhui Liu,Zhen Zhang,Fenghong Li,Zisheng Chao,JinCheng Fan
Aluminum batteries with aluminum as the anode and organic materials as the cathode have continuously drawn considerable attention because of their high theoretical energy density, natural abundance, and environmentally benign nature. Herein, we have done an elaborate design work on the basis of π–π conjugated organic molecule PTCDA by a molecular engineering strategy. Introducing a sulfur atom to replace the H atom in the aromatic ring of the PTCDA molecule to form SPTCDA (sulfurized PTCDA) with p−π conjugated system can reduce the energy level of the molecule. In addition, the extension of the conjugated system makes the electrons more delocalized, which is beneficial to the improvement of the conductivity of SPTCDA. Experimental results show that compared with pristine PTCDA, SPTCDA has a more stable structure and better cycle performance, rate capability, and coulombic efficiency, as well as a higher discharge voltage plateau. To further understand the electronic structure, operating voltage, and correct redox mechanism, density functional theory (DFT) calculations were performed for PTCDA and SPTCDA. The diffusion behavior of ions on the electrode surface was also discussed. This work reveals an important molecular structure design strategy for a carbonyl cathode, in order to break the application limitations of this electrode material on aluminum organic batteries.
研究领域:
材料科学
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电化学
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电池技术
·
分子设计
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Zhao Ruirui,Wang Haifeng,Du Haoran,Yang Ying,Gao Zhonghui,Qie Long,Huang Yunhui
Aqueous zinc batteries are appealing devices for cost-effective and environmentally sustainable energy storage. However, the zinc metal deposition at the anode strongly influences the battery cycle life and performance. To circumvent this issue, here we propose the use of lanthanum nitrate (La(NO 3 ) 3 ) as supporting salt for aqueous zinc sulfate (ZnSO 4 ) electrolyte solutions. Via physicochemical and electrochemical characterizations, we demonstrate that this peculiar electrolyte formulation weakens the electric double layer repulsive force, thus, favouring dense metallic zinc deposits and regulating the charge distribution at the zinc metal|electrolyte interface. When tested in Zn||VS 2 full coin cell configuration (with cathode mass loading of 16 mg cm −2 ), the electrolyte solution containing the lanthanum ions enables almost 1000 cycles at 1 A g −1 (after 5 activation cycles at 0.05 A g −1 ) with a stable discharge capacity of about 90 mAh g −1 and an average cell discharge voltage of ∼ 0.54 V.
研究领域:
电化学
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材料科学
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能源存储
✓ 已验证
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-13
·
IF 17.694
Li Siwu,Zhu Haolin,Liu Yuan,Han Zhilong,Peng Linfeng,Li Shuping,Yu Chuang,Cheng Shijie,Xie Jia
Potassium metal is an appealing alternative to lithium as an alkali metal anode for future electrochemical energy storage systems. However, the use of potassium metal is hindered by the growth of unfavourable deposition (e.g., dendrites) and volume changes upon cycling. To circumvent these issues, we propose the synthesis and application of nitrogen and zinc codoped porous carbon nanofibres that act as potassium metal hosts. This carbonaceous porous material enables rapid potassium infusion (e.g., < 1 s cm −2 ) with a high potassium content (e.g., 97 wt. %) and low potassium nucleation overpotential (e.g., 15 mV at 0.5 mA cm −2 ). Experimental and theoretical measurements and analyses demonstrate that the carbon nanofibres induce uniform potassium deposition within its porous network and facilitate a dendrite-free morphology during asymmetric and symmetric cell cycling. Interestingly, when the potassium-infused carbon material is tested as an active negative electrode material in combination with a sulfur-based positive electrode and a nonaqueous electrolyte solution in the coin cell configuration, an average discharge voltage of approximately 1.6 V and a discharge capacity of approximately 470 mA h g −1 after 600 cycles at 500 mA g −1 and 25 °C are achieved.
研究领域:
材料科学
·
电化学
·
能量存储
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Zhicheng Chen,Zongxu Li,Yuqiang Han,Yue Du,Dongbin Xiong,Xueqing Liu,Jianqing Zhou,Jun Wang,Yunlong Xie,Yahui Yang,Yisi Liu
Due to the high energy density and risk-free operation, flexible zinc–air batteries (ZABs) have the potential to be energy sources for wearable electronic devices. Nonetheless, the performance of quasi-solid-state gel electrolytes diminishes progressively throughout the ion-exchange process, primarily due to water evaporation on the exposed cathode side, which shortens the useful lifetime of ZABs. Herein, we propose a distinctive gel polymer electrolyte membrane comprising cotton fiber (CF) from natural long-staple cotton and polyvinyl acetate (PVA) to effectively extend the battery lifespan, which is due to that the addition of CF improves surface wettability , liquid absorption and retention, and ionic conductivity (1.53 × 10 −2 S cm −1 ) compared with single PVA electrolyte membrane. We also prepare a composite electrocatalyst (Co-N-C@GCF-950) by pyrolyzing the precursor of ZIF-67 in situ grown on the cotton fiber at 950 ℃. The flexible ZAB assembled with Co-N-C@GCF-950 as the cathode electrocatalyst and the CF-PVA membrane as the gel electrolyte shows a high open-circuit voltage of 1.5 V, and a stable charge-discharge voltage gap of 0.8 V for 11-h lifespan at a current density of 2 mA cm −2 under various bending conditions, which guides the future way of the application potential of environmental cotton fibers in the multiaspects for flexible metal-air batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）