Electrochemical noise measurement of a Li/SOCl2 primary battery

Journal of Solid State Electrochemistry - Electrochemical noise of a Li/SOCl2 primary battery was measured during discharge at a constant value resistor. The amplitude of the noise was found to be...     

Wide frequency band electrochemical noise measurement and analysis of a Li/SOCl2 primary battery

Journal of Solid State Electrochemistry - Electrochemical noise of a primary LiSOCl2 battery was measured in a wide frequency band during discharge at a constant value resistor. Power spectral...     

State-of-charge determination of Li/SOCl2 primary battery by means of electrochemical noise measurement

Journal of Solid State Electrochemistry - The electrochemical noise of a commercially produced Li-ion battery was measured during discharge by means of a constant value resistor using two...     

酞菁配合物对锂-亚硫酰氯电池正极的催化作用

合成过渡金属酞菁配合物MPc(M=Mn(Ⅱ),Fe(Ⅱ),Co(Ⅱ),N i(Ⅱ),Cu(Ⅱ)),研究MPc及其中心离子对L i/SOC l2电池正极的催化作用,并提出相关催化机理.     

含四氮杂十四轮烯的Li／SOCl2电池的研究

含四氮杂十四轮烯的Ｌｉ／ＳＯＣｌ２电池的研究章福平胡祝庆纪佩珍吴俭俭（浙江丝绸工学院纤维分院杭州３１００３３）关键词锂电池亚硫酰氯四氮杂十四轮烯过渡金属离子的有机大环络合物如Ｍ－ＰＣ［１，２］，Ｍ－ｐｏｒｐｈ［２］，Ｃｏ－ＴＡＡ［３］等掺入炭阴极后，...     

Relaxation electrochemical noise of Li/SOCl2 and Li/MnO2 primary batteries

Journal of Solid State Electrochemistry - Electrochemical noise measurements were carried out on commercially available Li/SOCl2 and Li/MnO2 primary batteries during relaxation following removal of...     

The impedance of the Li+/Li electrode in SOCl2

Impedance measurements have been made on a lithium electrode in SOCl₂ containing 1.8 M LiAlCl₄. Impedance loci were recorded over a range of frequencies at a series of potentials.The results confirm the existence of a film on the Li electrode which grows continuously with time. Kinetic data for the Li⁺/Li ion exchange were estimated by arranging for measurements to be made as rapidly as possible and after a practical minimum time of electrode/electrolyte contact. The exchage current density for the lithium electrode was estimated under our best conditions to be 0.48 mA/cm² and α for the Li⁺ couple ≈ 0.59.     

Experimental study of the heat generations of Li/SOCl2 and Li/SO2 batteries using a phase-change measurement method

A paraffin phase-change measurement method for the heat generation of spirally wound cylindrical Li/SOCl₂ and Li/SO₂ batteries at different ambient temperatures and discharge currents is proposed. The electrical and thermal insulations of the measurement system have been greatly improved, and the accuracy of the measurement system is 4.6 % based on calibration experiments. Compared with accelerated rate calorimetry, isothermal microcalorimetry, and radiation calorimetry methods, the phase-change measurement method is simpler, but with a high accuracy. The experimental results reveal that the heat generation of the batteries during discharge is weakly dependent on the ambient temperature in the range of 38–50 °C, but strongly affected by the discharge current. As the discharge current increases, the heat generated by the Li/SOCl₂ and Li/SO₂ batteries increases as a quadratic polynomial function. The Li/SO₂ battery generates more heat than the Li/SOCl₂ battery at the same discharge current, which is demonstrated by the qualitative analysis of the internal resistance. Furthermore, the phase-change measurement method for heat generation has a strong universality, and can be applicable for heat generation measurement of various battery types.     

Li/SOCl2电池中添加剂对SOCl2反应催化作用的研究进展

综述了酞菁配合物、卟啉配合物、席夫碱配合物等作为Li/SOCl2电池添加剂的研究进展,介绍了这些添加剂对碳表面的SOCl2还原反应的催化机理和效果,并对今后的研究目标进行了展望.     

Li metal-free rechargeable all-solid-state Li2S/Si battery based on Li7P3S11 electrolyte

Journal of Solid State Electrochemistry - As high energy density and enhanced safety are required for the lithium-ion battery development, all-solid-state battery has attracted significant...     

Li-O2 battery with a dimethylformamide electrolyte

Stability of the electrolyte toward reduced oxygen species generated at the cathode is a crucial challenge for the rechargeable nonaqueous Li-O(2) battery. Here, we investigate dimethylformamide as the basis of an electrolyte. Although reactions at the O(2) cathode on the first discharge-charge cycle are dominated by reversible Li(2)O(2) formation/decomposition, there is also electrolyte decomposition, which increases on cycling. The products of decomposition at the cathode on discharge are Li(2)O(2), Li(2)CO(3), HCO(2)Li, CH(3)CO(2)Li, NO, H(2)O, and CO(2). Li(2)CO(3) accumulates in the electrode with cycling. The stability of dimethylformamide toward reduced oxygen species is insufficient for its use in the rechargeable nonaqueous Li-O(2) battery.     

Carbon Nanotubes with Phthalocyanine-Decorated Surface Produced by NH3-Assisted Microwave Reaction and Their Catalytic Performance in Li/SOCl2 Battery

Multiwalled carbon nanotube (MWCNT)‐templated cobalt phthalocyanine (CoPc) assemblies are prepared by microwave reaction with the aid of NH₄Cl. The assemblies of CoPc/MWCNTs are added to the electrolyte of Li/SOCl₂ battery to show their potential application in the field of catalysis. The assemblies display a uniform coaxial nanotube structure. In the control test, the CoPc/MWCNTs synthesized without NH₄Cl exhibit the aggregation of the nanotubes of CoPc/MWCNTs. It indicates that the use of NH₄Cl as gas source is efficient in enhancing diffusion of the MWCNTs and controlling the growth of CoPc. The catalytic reduction of SOCl₂ can be carried out by CoPc molecules outside the assemblies and the MWCNTs inside the assemblies. The assemblies of CoPc/ MWCNTs exhibit excellent electrochemical catalytic activity to Li/SOCl₂ battery. The discharge energy of Li/SOCl₂ battery catalyzed by CoPc/MWCNTs is 144% higher than that of the battery without catalyst, and is 94% higher than the energy of Li/SOCl₂ battery catalyzed by bulk CoPc.     

In situ X-ray photoelectron spectroscopy investigation of the solid electrolyte interphase in a Li/Li6.4Ga0.2La3Zr2O12/LiFePO4 all-solid-state battery

Journal of Solid State Electrochemistry - The fundamental understanding of the solid electrolyte/electrode interphase during charge and discharge is promising for the development of all-solid-state...     

锂离子电池电解液的研究进展(英文)

综述现今锂离子电池电解液的研究进展 .评估了电解液中锂盐、溶剂、填加剂以及杂质等对电解液的电导、固体电解质相界面 (SEI)的形成、电池循环寿命等的影响     

Measurement of electrochemical noise of a Li/MnO2 primary lithium battery

Journal of Solid State Electrochemistry - Electrochemical noise of a Li/MnO2 primary lithium battery was measured and analyzed during discharge process for the first time. The amplitude of the...     

Li/CDMO电池及其放电机理研究

研究了Li/CDMO电池的放电反应机理、XRD、XPS等实验结果表明, 电池反应是锂在正极内的电化学嵌入反应。用恒电流间隙滴定法(GITT)测得锂在正极中的扩散速率为10^-9cm^2.s^-1量级, 与锂在层状化合物中的扩散速率相当, 结合Li/CDMO电池的热力学行为, Li/CDMO电池的放电反应历程是锂首先客居于层状结构的Li~2MnO~3中, 然后再通过热弛豫进入γ-β-MnO~2的晶格。     

A rechargeable lithium/quinone battery using a commercial polymer electrolyte

The present study reports superior electrochemical performance with capacity doubled for organic positive electrodes based on a small redox-active molecule when using the Lithium Metal Polymer (LMP) technology. Particularly, the simple use of the regular solid polymer electrolyte currently employed in commercial LMP cells allows obtaining for the first time an efficient two-electron cycling of tetramethoxy-p-benzoquinone with high-rate capability at temperatures as high as 100 °C. With no optimization, the restored capacity represents 80% of the theoretical value (190 mAh/g) after 20 cycles operated at a C rate. On the contrary, when cycled in conventional carbonate-based electrolytes, this quinone compound exhibits quite poor electrochemical features such as a very limited depth of discharge (~ 50% of the theoretical capacity in the first cycle) followed by rapid capacity decay. After cycling, preliminary post-mortem characterizations did not evidence any obvious degradation in the cell. Although the adverse effect of the diffusion of the active material is not fully inhibited, the coulombic efficiency is close to 100% while the Li/electrolyte interface appears stable.