在锂离子电池炭负极的制备中,粘结剂和导电炭黑用量、不同的碾压及封装条件都将影响电池的电化学性能。通过循环伏安及恒电流充放电测量技术,研究了中间相炭微球(M CM B)/水性粘结剂负极制备中上述因素的影响,发现水性粘结剂含量为2w t%...在锂离子电池炭负极的制备中,粘结剂和导电炭黑用量、不同的碾压及封装条件都将影响电池的电化学性能。通过循环伏安及恒电流充放电测量技术,研究了中间相炭微球(M CM B)/水性粘结剂负极制备中上述因素的影响,发现水性粘结剂含量为2w t%(羰甲基纤维素钠∶丁苯橡胶=1∶1,质量比)、导电炭黑含量为3w t%、负极碾压压力为25M Pa、封装压力50M Pa时,M CM B作为负极材料时表现出了较好的充放电性能,可逆放电容量达到了320.3mA h/g。且水性粘结剂工艺性能良好,可以考虑代替成本高且对环境有污染的有机粘结剂。展开更多
In Senegal, the Diamniadio, Sebikhotane and Bargny sector contains clay soils that are problematic for construction. In order to have more information on the behavior of the clay soils of Diamniadio, free swelling tes...In Senegal, the Diamniadio, Sebikhotane and Bargny sector contains clay soils that are problematic for construction. In order to have more information on the behavior of the clay soils of Diamniadio, free swelling tests followed by load-discharge cycles were carried out according to standard NF P 94-090-1. These tests were carried out using an Oedometric device on the three samples from the study site (sandy clays with calcareous concretion, marls with crumbs and laminated marls with attapulgite) to apprehend their swelling aspects in saturated conditions. For the free swelling test, a determination of the different swelling phases will be carried out followed by a comparison of the rate of evolution of the phases for the three samples from the site. In the same vein, the compressibility characteristics of the samples will also be provided from load-unload Oedometric tests. Thereafter, we proceed to a comparison of the void index at the initial state of the samples after two charge-discharge cycles and the influence of the cycles on the reorganization of the internal structure of the samples. These studies will provide more information on the swelling behavior of Diamniadio soils in the presence of water.展开更多
文摘在锂离子电池炭负极的制备中,粘结剂和导电炭黑用量、不同的碾压及封装条件都将影响电池的电化学性能。通过循环伏安及恒电流充放电测量技术,研究了中间相炭微球(M CM B)/水性粘结剂负极制备中上述因素的影响,发现水性粘结剂含量为2w t%(羰甲基纤维素钠∶丁苯橡胶=1∶1,质量比)、导电炭黑含量为3w t%、负极碾压压力为25M Pa、封装压力50M Pa时,M CM B作为负极材料时表现出了较好的充放电性能,可逆放电容量达到了320.3mA h/g。且水性粘结剂工艺性能良好,可以考虑代替成本高且对环境有污染的有机粘结剂。
文摘In Senegal, the Diamniadio, Sebikhotane and Bargny sector contains clay soils that are problematic for construction. In order to have more information on the behavior of the clay soils of Diamniadio, free swelling tests followed by load-discharge cycles were carried out according to standard NF P 94-090-1. These tests were carried out using an Oedometric device on the three samples from the study site (sandy clays with calcareous concretion, marls with crumbs and laminated marls with attapulgite) to apprehend their swelling aspects in saturated conditions. For the free swelling test, a determination of the different swelling phases will be carried out followed by a comparison of the rate of evolution of the phases for the three samples from the site. In the same vein, the compressibility characteristics of the samples will also be provided from load-unload Oedometric tests. Thereafter, we proceed to a comparison of the void index at the initial state of the samples after two charge-discharge cycles and the influence of the cycles on the reorganization of the internal structure of the samples. These studies will provide more information on the swelling behavior of Diamniadio soils in the presence of water.
