Ananya Kumar

9 Questions 4 Answers 0 Followers

Questions related from Ananya Kumar

If an O3 type compound is charged, why does it convert to P3 phase and not P2 phase?

Is it possible to directly convert O3 to P2 and vice versa, just by electrochemical charging or discharging?

26 September 2023 1,642 0 View

What does it mean when I say a cathode material is M+/ vacancy ordered?

Cathode materials tend to show reduced cycle stability of they have M+/ vacancy ordering. Several attempts are made in order to make it disordered. But what exactly happens in this kind of...

07 July 2021 5,503 0 View

In case of a symmetric full cell do the current collectors differ?

I am making a symmetric sodium ion full cell using NASICON type materials, i.e anode and cathode materials are same. So, do I need to use aluminium and copper as current collectors for cathode and...

23 February 2020 1,395 2 View

Why does the charge transfer resistance of some materials decrease after cycling?

I am using WS2 as anode material for Li ion and Na ion batteries. EIS data shows that the diameter of the circle is decreasing with increasing number of cycles, indicating charge transfer...

17 November 2019 7,155 3 View

Why there are only 14 Bravais lattice types?

There are 7 Bravais lattice systems. Ideally each system should have four types, namely, primitive, base centred, body centred and face centred. However, only orthorhombic has all 4 types and...

17 September 2019 2,285 1 View

What is shuttle effect in Na-S batteries?

How does the formation of polysulfides reduce the capacity of the system?

17 May 2019 2,838 3 View

What is the significance of the intersection voltage of charge discharge curves of a battery?

The charge discharge curves of a battery intersect at a particular value of voltage. As number of cycles increase, this intersection voltage changes. What is the significance of its value?

22 April 2019 4,796 3 View

What is the difference between acetylene black and super p in terms of electrical conductivity and structure?

If I don't have one of these can I use the other one as a replacement?

04 January 2019 9,379 1 View

What should be the ratio of PVDF and NMP for a coating on Cu foil used as anode in Li ion battery?

I am grinding active material, acetylene black and PVDF before adding NMP to the mixture. What should be the weight ratios of PVDF and NMP so that the adhesion of the coating to Cu foil is good?

03 August 2018 6,167 3 View