为了研究炭黑对锌空气电池空气扩散电极电性能的影响,选用不同种类的炭黑作为锌空气电池空气扩散电极的导电剂,采用辊压法制备出空气扩散电极,测试了空气扩散电极的含液率、极化曲线、使用寿命和所得AA型锌空气电池样品的放电容量,还利...为了研究炭黑对锌空气电池空气扩散电极电性能的影响,选用不同种类的炭黑作为锌空气电池空气扩散电极的导电剂,采用辊压法制备出空气扩散电极,测试了空气扩散电极的含液率、极化曲线、使用寿命和所得AA型锌空气电池样品的放电容量,还利用扫描电镜(SEM)对空气扩散电极催化层的表观形貌进行了观察。研究结果表明,Shawinigan Black AB 50炭黑的疏水性最好,所得空气扩散电极的含液率最低、电性能最好、使用寿命最长,所制AA型锌空气电池样品的放电容量可达4.6 Ah。展开更多
The formation of runaway electron pre-ionized diffuse discharges at the pressures 0.05-0.7 MPa of in air, argon, nitrogen, and SF6 in an inhomogeneous electric field was investigated. Dynamics of intensity of the disc...The formation of runaway electron pre-ionized diffuse discharges at the pressures 0.05-0.7 MPa of in air, argon, nitrogen, and SF6 in an inhomogeneous electric field was investigated. Dynamics of intensity of the discharge plasma radiation from the different discharge gap regions in the gas pressure range （0.05-0.7 MPa） was established. It was shown that, the breakdown is occurred owing to the ionization wave, which starts from the electrode with small radius of curvature at both polarity of high voltage pulses. It is seen that formation of bright spots on the fiat electrode at the negative polarity of the electrode with small radius of curvature are observed during the changing of the discharge current polarity. It was shown that, at positive polarity of electrode with a small radius of curvature, the bright spots on the flat electrode arise due to the participation of the dynamic displacement current in the gap conductance.展开更多
基金广东省重点科技攻关项目(2002 A 1100601)广州市科技重点攻关项目(025 G 3171)
文摘为了研究炭黑对锌空气电池空气扩散电极电性能的影响,选用不同种类的炭黑作为锌空气电池空气扩散电极的导电剂,采用辊压法制备出空气扩散电极,测试了空气扩散电极的含液率、极化曲线、使用寿命和所得AA型锌空气电池样品的放电容量,还利用扫描电镜(SEM)对空气扩散电极催化层的表观形貌进行了观察。研究结果表明,Shawinigan Black AB 50炭黑的疏水性最好,所得空气扩散电极的含液率最低、电性能最好、使用寿命最长,所制AA型锌空气电池样品的放电容量可达4.6 Ah。
基金Acknowledgments The work was supported by the grant from the Russian Science Foundation, project No. 14-29-00052.
文摘The formation of runaway electron pre-ionized diffuse discharges at the pressures 0.05-0.7 MPa of in air, argon, nitrogen, and SF6 in an inhomogeneous electric field was investigated. Dynamics of intensity of the discharge plasma radiation from the different discharge gap regions in the gas pressure range （0.05-0.7 MPa） was established. It was shown that, the breakdown is occurred owing to the ionization wave, which starts from the electrode with small radius of curvature at both polarity of high voltage pulses. It is seen that formation of bright spots on the fiat electrode at the negative polarity of the electrode with small radius of curvature are observed during the changing of the discharge current polarity. It was shown that, at positive polarity of electrode with a small radius of curvature, the bright spots on the flat electrode arise due to the participation of the dynamic displacement current in the gap conductance.
