Heat flow calorimeter for chemical source current investigations

Heat flow calorimeter, designed to study thermal processes occurring in electrochemical cells and batteries during charge-discharge cycling and storage, is described. The device includes a potentiostat-galvanostat module that allows to make electrochemical and calorimetric measurements simultaneously and increases the informativeness of the experiment. Software comprises data processing procedure using a deconvolution filter, to compensate the inertia of the thermal flow meter. Instrument control and access to experimental data is carried out remotely via Ethernet. Absolute error of measurement of the heat flow is ± 50 μW with a resolution of 1 μW. Maximum charge-discharge current of builtin galvanostat is ± 100 mA at the maximum polarizing voltage ± 10 V. Study can be performed in the temperature range of 0-90 °C.