There's another round in the exchanges over Professor Goodenough's paper claiming to have found a new lithium ion battery technology that is safer and has several times the energy density of current lithium ion batteries.
Quick background, some weeks ago Goodenough's paper was published in a peer reviewed journal. A few days ago Quartz published an article where several battery researchers, including Jeff Dahn who works closely with Tesla, expressed fairly strong skepticism about the paper's claims.
Goodenough emailed some responses to the questions raised in the Quartz article. His comments are in a new article in Computerworld, linked below. Here's his response to what appears to be the main source of doubts,
"In this case, scientists wonder how it is possible to strip lithium from the anode and plate it on a cathode current collector to obtain a battery voltage since the voltage is the difference in the chemical potentials (Fermi energies) between the two metallic electrodes," Goodenough stated. "The answer is that if the lithium plated on the cathode current collector is thin enough for its reaction with the current collector to have its Fermi energy lowered to that of the current collector, the Fermi energy of the lithium anode is higher than that of the thin lithium plated on the cathode current collector."
Inventor of new lithium-ion battery responds to skepticism