Aside from taking away someone's bending, as seen against Firelord Ozai, is there anything more to the energybending?
Do we know any details on the technique other than what was told in the series itself?
Aside from taking away someone's bending, as seen against Firelord Ozai, is there anything more to the energybending?
Do we know any details on the technique other than what was told in the series itself?
Not much is known about Energybending. Before the four elements and the avatar were created, Energybending was the only bending-art in the world. Out of this, the four bending-arts were created (Airbending, Waterbending, Earthbending and Firebending), so these are based on Energybending. Energybending is the base of all arts. While the for bending-arts are based on the Chi, Energybending works a little bit different: It bends the energy in general and not the Chi.
With that, Energybending can be used to take and restore bending-power and knowledge (nothing more is shown, but I guess that much more is possible):
Also, Energybending is the only bending-power that can be used by a spirit without a medium (as shown when Aangs spirit teaches Energybending to Korra).
EnergyBending skills
Transferring knowledge : We see this when the giant turtle transfers the knowledge of this bending to Aang.
Removing Bending Power : For when Aang seals the powers of Firelord Ozai
Restoring Bending Power : In The Legend of Korra, Korra goes into Avatar State and Aang restores the power of the people that were affected.
The lion turtle told him that in the era before the Avatar existed, the benders did not bend the elements, but the energy within themselves. In order to bend another's life energy, their own spirit must be unbendable, or they would be corrupted and destroyed.
This is the only information being able to found, maybe in the next books of Legend of Korra we would get new information.
The others are already stated in the answers so I am only including explanations for the 2 that are not stated.
Removing bending
Astral projection
Tapping into the vast expanse of cosmic energy with the help of the Tree of Time, Korra was able to bend the energy within herself to create an astral projection of her spirit. Despite not having been bound by a corporeal form, the projection was able to both inflict and sustain great physical damage and utilize waterbending. This astral form was also capable of firing a beam of light similar to that of Vaatu.
The ability to manipulate energy originating from the Spirit World. Korra first used this technique to manipulate the energy of the pod encasing Jinora, Ryu, and his tour group after they were captured by hostile spirit vines. She later employed the same technique in the mortal world to deflect a lethal beam of energy fired by Kuvira's spirit cannon and save the metalbender.
Nothing has been mentioned outside the official series episodes so there are few details to work with. The only other resources to look toward would be other series and how each used life force controlling powers.
Don't forget, it's probably possible to grant the power of bending to someone who cannot bend, as the Lion Turtles created the first Avatar.