This document provides an overview of bio-batteries, including their working principle, types, advantages, disadvantages, and applications. Bio-batteries generate electrical energy through chemical reactions involving organic compounds like glucose, and include enzymes or microorganisms to break down substrates. There are two main types - enzymatic bio-batteries that use enzymes, and microbial bio-batteries that use microbes. Bio-batteries have advantages like being renewable, non-polluting, and safe, but store less energy than lithium batteries and cannot be used for long-term storage. Applications include powering medical implants, electronics, toys, and remote sensing devices.

1. An Overview of Bio–Battery Working Principle, Types & Applications
By
MIGABO KISIMBANYI Evariste

2. Outline
• ABSTRACT
• OVERVIEW OF A BIO-BATTERY
• WORKING PRINCIPLE OF A BIO-BATTERY
• TYPES OF BIO-BATTERY
• ADVANTAGES AND DISADVANTAGES OF BIO-BATTERY
• SOME REAL-LIFE APPLICATION
OUTCOMES:
- AT THE END OF THIS PRESENTATION, YOU’LL BE ABLE TO LEARN AND KNOW
MORE ABOUT BIO-BATTERY

3. An Overview of Bio-battery – Working
Principle, Types & Applications

4. Abstract
 What is Battery?
A battery is a device which is used to convert chemical energy to electrical energy.
Batteries, are classified into different types based on the application, and these are used in several electrical as
well as electronic devices. An electrical battery includes certain chemicals like compounds of mercury, lead etc.
And the lead chemicals in a battery are extremely dangerous in nature and are not environment-friendly. Apart
from these, there is a chance for chemical leakage as well as the explosion of the battery in certain cases. To
overcome this problem researchers have invented Bio-battery which reduced the impact of these chemicals
and reduces the harm to the environment which gives a great advantage to humans.

5. This picture illustrates the first
battery that was made by Italian
Scientist Alexandro Volta in 1800.
It is called the Volta's Voltaic Pile

6. Overview of a Bio-Battery
 A Bio battery is an electrical energy storage device which is used in several applications. This battery can be
powered with the help of organic compounds that are available in glucose form that is used in the human
bodies.

7. Bio-Battery Construction
 The bio-battery construction can be done by using four components namely the
anode, cathode, electrolyte, and separator.
 All these four components are coated on each other so they stack up jointly.
Similar to other batteries, in these batteries, the anode is negatively charged as
well as the cathode is charged positively. The main difference between the
anode & cathode permits the flow of electrons inside and away from them. In
bio- battery construction, the anode terminal is placed at the top of the battery
whereas the cathode terminal is placed at the bottom of the battery. In between
these two terminals electrolyte is placed which includes a separator.

8. Bio-Battery Construction

9. Bio-Battery Working Principle

10. Bio-Battery Working Principle
 In the above figure, glucose is used at the anode side whereas enzyme is used
at the cathode side
 Glucose gets broken down into electrons and protons
 The flow of protons can travel to cathode side via a separator and the flow
electrons can travel to cathode side via a mediator.
 Enzymes are utilized at cathode side which generates water by both protons as
well as electrons traveled from the anode side. Here, the reaction of Oxygen
reduction is being used here.
 Above reactions will generate electrons as well as protons in the system. Finally,
electric energy will be generated.

11. Chemical Reactions In Bio-Battery:
 Between the anode and the cathode lies the electrolyte which contains a
separator. The main function of the separator is to keep the cathode and anode
separated, to avoid electrical short circuits. This system as a whole, allows for a
flow of protons (H+ ) and electrons (e− ) which ultimately generates electricity
At the anode, the sugar is oxidized, producing both electrons and protons.
Glucose → Gluconolactone + 2H+ + 2e−
These electrons and protons now play an important role in the release of
stored chemical energy. The electrons travel from the surface of the anode
through an external circuit to get to the cathode. On the other hand, the
protons are transferred via the electrolyte through the separator to the cathode
side of the battery.

12. Chemical Reactions In Bio-Battery:
The cathode then carries out a reduction half-reaction, combining the protons and
electrons with the addition of oxygen gas to produce water.
O2 + 4H+ + 4e− → 2H2O

13. Types of Bio-Batteries
 There are commonly two types of Bio-battery namely:
 Enzymatic Bio-Battery: In this type of battery, biochemical agents (Enzymes) are
utilized for a breakdown of a substrate.

14. Types of Bio-Batteries
 Microbial Bio-Battery: In this type of battery, micro-organisms such as
Escherichia coli, electric bacteria, are utilized for a breakdown of a substrate.

15. Advantages of Bio-battery
 Biobatteries are much faster in charging the devices because of the quick action
of the enzymes when we compared to other batteries.
 Bio-batteries don’t require external power supply due to the constant supply of
glucose or sugar.
 Bio-batteries available by a high-energy density and it can be used easily at
room temperature.
 Biobatteries are totally non-polluting, renewable, and also environmentally
friendly.
 Biobatteries are very secure to use due to no leakage and explosions like
chemical batteries.

16. Disadvantages of Bio-battery
 Bio-battery preserve less amount of energy as compared to lithium-based
electrical batteries.
 These batteries cannot be used for the long-term as well as storage

17. Applications of Bio-Battery
Some applications of bio-battery include the following.
 Bio-batteries are used in medical implants like pacemakers, insulin pumps, etc.
 It can be used as a charger for electronic devices like cell phones, tabs, power
banks, etc.
 Bio-batteries can be used for toys as well as on the greeting cards
 Bio-batteries are used in the defense field in the remote sensing devices i.e:
spying devices, as well as surveillance.

18. Applications of Bio-battery

19. FOR MORE REFERENCES CHECK THE
LINKS BELOW:
 https://ijret.org/volumes/2013v02/i11/IJRET20130211017.pdf
 https://www.elprocus.com/an-overview-of-bio-battery-working-principle-types-
applications/
 https://en.wikipedia.org/wiki/Biobattery

20. THANKS!!! 
PRESENTED BY: MIGABO KISIMBANYI EVARISTE
DATE: 11/05/2022