# Mathematical modeling of a nickel/metal-hydride cell

## Abstract

A mathematical model for the discharge of a metal-hydride electrode was developed. The model was used to study the effect of various parameters on predicted discharge curves. The simulations obtained using the model show the expected decrease of charge utilization as the rate of discharge is increased. Increasing the particle size of the alloy and decreasing the diffusion coefficient of the hydrogen atoms in the hydride showed a similar effect on the discharge curves. The model simulations also show the critical role that the kinetic and transport parameters play in determining the overall shape of the predicted discharge curves for a metal-hydride electrode. The kinetic parameters used in the model predictions are those for TiMn{sub 1.5}H{sub {ital x}}({ital x}{lt}0.31). {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}

- Authors:

- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843 (United States)|[Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208 (United States)
- Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208 (United States)

- Publication Date:

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 165147

- Resource Type:
- Journal Article

- Journal Name:
- AIP Conference Proceedings

- Additional Journal Information:
- Journal Volume: 325; Journal Issue: 1; Other Information: PBD: 25 Jan 1995

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; MATHEMATICAL MODELS; ELECTRIC DISCHARGES; ELECTRODES; NICKEL; HYDRIDES; ELECTROLYTES; ELECTRIC POTENTIAL; CURRENT DENSITY; DESIGN

### Citation Formats

```
De Vidts, P., and White, R.E.
```*Mathematical modeling of a nickel/metal-hydride cell*. United States: N. p., 1995.
Web. doi:10.1063/1.47266.

```
De Vidts, P., & White, R.E.
```*Mathematical modeling of a nickel/metal-hydride cell*. United States. doi:10.1063/1.47266.

```
De Vidts, P., and White, R.E. Wed .
"Mathematical modeling of a nickel/metal-hydride cell". United States. doi:10.1063/1.47266.
```

```
@article{osti_165147,
```

title = {Mathematical modeling of a nickel/metal-hydride cell},

author = {De Vidts, P. and White, R.E.},

abstractNote = {A mathematical model for the discharge of a metal-hydride electrode was developed. The model was used to study the effect of various parameters on predicted discharge curves. The simulations obtained using the model show the expected decrease of charge utilization as the rate of discharge is increased. Increasing the particle size of the alloy and decreasing the diffusion coefficient of the hydrogen atoms in the hydride showed a similar effect on the discharge curves. The model simulations also show the critical role that the kinetic and transport parameters play in determining the overall shape of the predicted discharge curves for a metal-hydride electrode. The kinetic parameters used in the model predictions are those for TiMn{sub 1.5}H{sub {ital x}}({ital x}{lt}0.31). {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}},

doi = {10.1063/1.47266},

journal = {AIP Conference Proceedings},

number = 1,

volume = 325,

place = {United States},

year = {1995},

month = {1}

}