Who invented the atomic battery in 1912?

Question:-

Who invented the atomic battery in 1912?

Answer:-

• The first atomic battery was  developed in 1912 by Henry Marseley.
•  Henry Marseley was an outstanding skilled experimental physicist. 
  
• An atomic battery is a device which uses energy from the decay of a radioactive isotope to generate electricity.
• Atomic batteries usually have an efficiency of 0.1-5%.