Мы освободили ячейку для хранения.

Освободили is the past tense plural form of освободить, which is a perfective verb.

• освободить = to free, to clear, to make available
• освободили = we/they freed, cleared, made available

Because the subject is мы (we), the verb takes the plural past form.

The perfective aspect suggests a completed action: the compartment or slot has already been cleared or freed up. If the speaker wanted to emphasize an ongoing process or repeated action, Russian would normally use the imperfective verb освобождать instead.

Because ячейку is in the accusative case, which is used here for the direct object of the verb освободили.

The dictionary form is ячейка. It is a feminine noun, and feminine nouns ending in -а / -я usually change to -у / -ю in the accusative singular.

So:

• ячейка = nominative singular
• ячейку = accusative singular

In this sentence, we freed what? → ячейку, so the accusative is required.

Literally, ячейка can mean cell, compartment, slot, or small storage unit, depending on context.

A learner may first meet ячейка as:

• a biological cell
• a prison cell
• a spreadsheet cell

But here, because of для хранения (for storage), it means something more like:

• a storage compartment
• a locker slot
• a storage cell/unit

So the word is broader than the English word cell might suggest.

After для (for), Russian normally uses a noun or a verbal noun, not an infinitive.

Here:

• для = for
• хранение = storage, keeping
• для хранения = for storage

The form хранения is the genitive singular of хранение, because для requires the genitive case.

So Russian expresses this as for storage, not for to store.

Because the preposition для almost always governs the genitive.

So:

• хранение = storage
• для хранения = for storage

This is a very common pattern in Russian:

• для работы = for work
• для детей = for children
• для хранения = for storage

So the genitive here is not special to this sentence; it is simply required by для.

Yes. Russian often omits subject pronouns when the meaning is already clear from the verb form or context.

So both are possible:

• Мы освободили ячейку для хранения.
• Освободили ячейку для хранения.

The version with мы is more explicit and may be used to:

• emphasize we did it
• contrast with someone else
• make the sentence clearer on its own

Since освободили can also mean they freed in the past plural, adding мы removes ambiguity.

No, Russian word order is fairly flexible, although the neutral order here is very natural:

• Мы освободили ячейку для хранения.

Other orders are possible, but they change emphasis:

• Ячейку для хранения мы освободили.
  Emphasizes the storage compartment
• Для хранения мы освободили ячейку.
  Emphasizes for storage

So the original order is probably the most neutral, straightforward version.

The imperfective partner is освобождать.

Compare:

• освободить → perfective, completed result
• освобождать → imperfective, process, repetition, or general action

Examples:

• Мы освободили ячейку.
  We cleared the compartment.
  Completed action.

• Мы освобождали ячейку.
  We were clearing the compartment / We used to clear the compartment.
  Focus on process or repeated action.

In your sentence, perfective освободили is natural because it presents the action as completed.

Yes, it is natural, especially in contexts involving:

• lockers
• storage systems
• warehouse space
• memory or data storage
• shelf or compartment management

Depending on context, ячейка для хранения might refer to a physical compartment or a more technical kind of storage slot.

The sentence sounds like a factual report of a completed action: we made a storage slot available / we cleared a storage compartment.

The main stresses are:

• мы освободи́ли яче́йку для хране́ния

More specifically:

• освободи́ли → stress on -ди́-
• яче́йку → stress on -че́й-
• хране́ния → stress on -не́-

Stress is important in Russian because it is not always predictable, and it can affect vowel pronunciation quite a lot.

Yes. In this sentence, ячейку для хранения is naturally understood together as a compartment/cell intended for storage.

Grammatically:

• ячейку is the noun being acted on
• для хранения describes its purpose

So the phrase works like:

• a box for tools
• a room for meetings
• a container for storage

In other words, для хранения is not a separate idea from the rest of the sentence; it modifies ячейку and helps define what kind of ячейка is meant.