Extension of electrochemical system of metadata by gases

Extension of the yaml file:
Experiment:
  user: X
  data: dd.mm.yyyy
  doku: null
figure description:
  version: 1
  type: raw
  measurement type: CV
  scan rate:
    value: 50
    unit: mV/s
  potential scale:
    unit: V
    reference: RHE
  current:
    unit: mA/cm-2
  additional:
    linked measurements: null
    comment: null
electrochemical system:
  version: 1
  instrumentation:
    type: potentiostat
    supplier: Biologic
    product: VSP-300
    internal ID: null
electrolyte:
  type: aq
  components:
    -name: sulfuric acid
    type: acid
    proportion:
      value: 50
      unit: volume percent
    source:
      supplier: null
      LOT: null
    total organic carbon:
      value: 3
      unit: ppb
    concentration:
      value: 0.1
      unit: M
ph:
  value: null
  uncertainty: 0.1
temperature:
  value: 298.15
  unit: K
gas:
  type: N2
  source: gasline
  supplier: null
  purity: null
electrodes:
  configuration: 3
  reference electrode:
    type: RHE
    source:
      supplier: home made
      counter electrode: null
      material: Pt
      crystallographic orientation: poly
      shape: wire
  working electrode:
    material: Ni
    crystallographic orientation: '111'
    source:
      supplier: mateck
      LOT: null
    shape:
      type: cylinder
      height:
        value: 4
        unit: mm
      diameter:
        value: 4
        unit: mm
    geometric electrolyte contact area:
      value: null
      unit: cm-2
    preparation procedure: null
electrochemical cell:
  type: null
  cell material: null
  cell description: null
echemdb / svgdigitizer

Extension of electrochemical system of metadata by gases #108
