1. Energy Materials and Devices Division (former Fuel Cell and Battery Division), CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India
2. School of Advanced Materials, Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
3. Advanced Materials & Chemical Characterization Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India